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Picco

"Picco Micromotori" is a family run business located in Arcore, Italy. It was created by Gualtiero Picco after he left OPS in 1980 where he had been the driving force and design engineer who created the famous OPS Speed 60 and finally the OPS 90 marine engine (he was literally the "P" in OPS), the design similarities between OPS and Picco engines are not mere coincidence. Sadly Gualtiero Picco passed away in 2011 but his sons Eduardo and Alberto continue the family business which is now focused primarily on producing car engines.

PICCO 40 SE R/C (Side Exhaust) (mid 1980’s)

Cost: £56 New

PICCO P40 SE R/C (mid 1980’s)
Capacity: 6.40 cc (0.391 cu in)
Bore: 20.2 mm (0.795 in)
Stroke: 20 mm (0.787 in)
Weight: 420 grams
Power: 0.97 BHP @ 15,000 RPM

(PICCO P45 SE R/C (mid 1980’s) - Capacity: 7.46 cc (0.455 cu in) - Bore: 21.8 mm (0.858 in) - Stroke: 20 mm (0.787 in) - Power: 1.05 BHP @ 15,000 RPM)

PICCO 60 SE R/C (Side Exhaust)

Cost: £38

Capacity: 9.82 cc (0.599 cu in)
Bore: 23.85 mm (0.939 in)
Stroke: 22 mm (0.966 in)
Weight: 600 grams
Power: 1.65 BHP @ 16,500 RPM

PICCO 65 Marine

Cost £60

PICCO 67 Marine

Cost £74.50

PICCO 67 and 80 marine engines

Cost £95

Black flywheel engines with silver heads and no exhaust fins are circa 1982 - 1993 (rear two engines). About 1994 the EXR engines were introduced, they had added fins adjacent to the exhaust stub and remained in production until replaced by the large blue headed EXR engines a few years later, smaller blue water cooled followed about 1998 and then black heads in 2000.

PICCO 90 Marine (1996)

Cost £103

Capacity: 14.809 cc (0.904 cu in)
Bore = 27.3 mm (1.075 in)
Stroke = 25.3 mm (0.996 in)
Maximum RPM = 29,000 RPM
Piston and Liner ABC
Induction: Rotary disc valve
Porting: Schnuerle four inlet ports
Exhaust outlet: 22 mm

Two piece crankshaft with big end needle roller bearing.

PICCO P90

five hours use

Cost £110

Capacity cubic: 14.97 cc
Power: 6.25 HP
RPM: 27.000
Stroke: 25.40 mm
Bore: 27.40 mm
Carburator: Barrel type carb.
Glow plug: Conical (Turbo)

PICCO P-90 Marine (2004)

Cost £117

Capacity: 14.88 cc (0.908 cu in)
Bore: 26.70 mm (1.051 in)
Stroke: 26.60 mm (1.047 in)
Crankshaft: 15mm diameter crankshaft
Porting: 5 port Schnurle
Piston / Cylinder: ABC (Piston CNC machined from silicone alloy / Brass liner chrome plated)
Bearings: Swiss made ball bearings - Combustion chamber: Head insert
Ignition: Conical turbo glow plug
Carburettor: Rotary with 12mm bore and aluminium body

PICCO P-90 Marine (2004)

Cost £135

New but missing cylinder piston and rod

Capacity: 14.88 cc (0.908 cu in)
Bore: 26.70 mm (1.051 in)
Stroke: 26.60 mm (1.047 in)
Crankshaft: 15mm diameter crankshaft
Porting: 5 port Schnurle
Piston / Cylinder: ABC (Piston CNC machined from silicone alloy / Brass liner chrome plated)
Bearings: Swiss made ball bearings - Combustion chamber: Head insert
Ignition: Conical turbo glow plug
Carburettor: Rotary with 12mm bore and aluminium body

Profi M.E. are based in the Ukraine and specialise in making small runs of high quality scale multi cylinder working model engines.

PROFI 1/5 SCALE 1928 FORD "A" 1/6 scale

Brand new spark ignition or glow methanol four cylinder engine requires 60-80ml oil in the sump. Working water pump and distributer. 25 single carb engines produced in 2002 by Profi M.E. in the Ukraine, 25 more as twin carburettor hotrod engines. Uses splash lubrication. Every engine factory tested and set up. Cost $3,999.95 (£2661)

Bore: .675"
Stroke: .827"
Capacity: 19.51cc
L: 8"
W: 3.5"
H: 5.5"
Sump oil capacity: 60-80ml
Cost me £1500

PROFI Micro Engines CIRRUS

The CIRRUS 1/6 scale 18 cc in-line four cylinder four stroke was built in low numbers in two versions, Air cooled & Water cooled as glow or spark ignition by PROFI Micro Engines between 2001 and 2002.

Factory tested and set up $2,799.95

Profi

Profi Engines were designed and manufactured by Hans Hornlein, of 7917 Vohringen Lindenstrabe 25, Oistfact kk40, West Germany.. Six different capacities were produced, 10, 15, 20, 40, 61 and 76 and were all machined from bar stock. They were introduced in 1975. Approximately 10,000 engines in total were produced during the few years they remained in production and the vast majority of engines sold were the 40 and 60 capacities.

Profi 40 (1975 - 1977)

Machined from bar stock
Schnuerle porting
Double ball bearings

Profi 40 (1975 - 1977)

Cost: £45

Machined from bar stock
Schnuerle porting
Double ball bearings

RADUGA / Радуга

RADUGA or in the Russian alphabet Радуга means "rainbow", the 7cc engine was made by the "Raduga Design Bureau", a state owned aero-space facility specialising in missile manufacture and are located in Dubna, Moscow, Russia. They produced the engine from 1974 until 1980, initially for use in control line stunt aircraft. In the last few years of production they were also produced a R/C version and they exported the engine. In 1984 Raduga introduced the P10PY, A 10cc R/C ABC glow plug engine made by by the aerospace company "PROGRES" in Savelovo.

RADUGA 7cc (1974)

Capacity: 0.4227 cu in (6.927 cc)
Bore: 21 mm
Stroke: 20 mm
Weight: 272 grams
Porting: Schnuerle
Piston/Liner: steel liner/lapped cast iron piston
Crankshaft bearing: Bronze bush
Recommended propeller: 10x6

Cost: £31

Hard to start and suffers from severe vibration.

Raduga P10PY (1984-1986)

Cost: £41.50

Capacity; 9.95cc
Bore: 24mm
Stroke: 22mm
RPM: 3000-12000rpm
Cylinder / Piston: ABC

Serial num: 5.84.1132 (1132nd engine produced in May 1984)

RCV

RCV engines were made by RCV Engines Ltd. Wimborne, Dorcet, England, they were unusual and unique rotary valve engines designed and introduced in 1997. The CD range were 58, 91,130 cu. in. and the SP range was  90, 120 cu. in. RCV now only make larger non model engines, with Weston UK taking over the Brand.

RCV 58-CD marine (2003)

New
Cost £210

Displacement 0.58 cu 9.5 cc
Power 0.85 bhp
Length 4.01 inch 104 mm
Height 2.64 inch 67 mm
Shaft 1/4" UNF
RPM 2,400 - 12,000
Fuel 10% Nitro 15% Oil including max 6% Castor

parts  manual

RCV 58-CD (2003)

COST £73

4-stroke Glow Unique rotary valve system
Displacement 0.58 cu 9.5 cc
Power 0.85 bhp
Length 4.01 inch 104 mm
Height 2.64 inch 67 mm
Shaft 1/4" UNF
RPM 2,400 - 12,000
Prop 10x6 11x6 12x6 13x6
Fuel 10% Nitro 15% Oil including max 6% Castor

RCV 91 CD

Cost: £95

RCV 90 SP 0.90

RCV - rotary cylinder valve four stroke engine

The engine uses RCV's unique rotary valve system - which has only one extra moving component to a 2-stroke and so is easy to maintain. One more benefit to RCV SP engines is the behind the prop starting facility

4-stroke - Glow ignition
Displacement: 15 cc
Max Power: 1.5 bhp
Weight: 785 g
Length: 120 mm
Propeller shaft: 5/16" UNF
RPM range 1,400 - 6000 rpm
Prop Sizes 16x14, 17x13, 18x12
Fuel: 10% Nitro / 15% Oil including max 6% Castor

Cost £210.00

RMX

Made for Ripmax in Russia from 2002 to 2006 by the factory that made the MDS engines. Three engines were available, the RMX 38, RMX 40 and RMX 48.

RMX 40 (2002 - 2006)

ROSS

Rosspower engines were designed by Louis Ross and produced by RossPower inc. in Roosevelt, NY, USA. Louis sold his engine interests to MRC in 1974.

Ross twin 60 (1976)

new un-run
Cost £175

Capacity: 0.6032 (9.884)
Bore: 0.8 in (20.32 mm)
Stroke: 0.6 in (15.24 mm)
Compression Ratio: 8 to 1
Power: 5% Nitro 0.96 BHP @ 13,000 RPM
Weight: 437 grams
Crankshaft bearings: Ballrace & needle bearing
Crankshaft thread: 1/4 x 28 UNF stud
Piston & Liner: Steel Liner with Dykes ring

Rosspower RC 61 custom (1974)

Cost £90

Capacity: 0.61 cu in (9.996 cc)
Bore: 0.920 in (23.368 cc
Stroke: 0.918 in (23.317 cc)
Compression: 10:1

The engine features twin Timken bearings on the con-rod big end and has a chromed bronze liner in which the dykes ringed piston runs.

Rosspower RC 61 custom (1974)

Cost £100

Capacity: 0.61 cu in (9.996 cc)
Bore: 0.920 in (23.368 cc
Stroke: 0.918 in (23.317 cc)
Compression: 10:1

The engine features twin Timken bearings on the con-rod big end and has a chromed bronze liner in which the dykes ringed piston runs.

Rossi

In 1966 the Rossi brothers Cesare and Ugo formed "Fratelli Rossi" in Brescia Italy. They soon gained a reputation for producing the most powerful 10cc racing engine in the world, the "Rossi 60 speed". In 1970 they introduced the first tune piped .15 engine to be commercially produced and changed the face of F2A speed flying forever. In 1982 Cesare Rossi left "Fratelli Rossi" and two years later with his wife Graziosa Barchi formed "Novarossi Nitro Micro Engines’ in Monticelli Brusati, Italy. Ugo Rossi passed away in November 2002 and the company was re-named "AXE Motor Rossi", with Alessandro Rossi in control.

Early Rossi 60 speed engines were supplied with Standard German Kavan carburettors linked to an exhaust restrictor for aircraft use, marine engines had the holes for the rotary exhaust restrictor blocked with brass press in plugs. As the use of tuned pipes increased new castings had all crankcases undrilled as standard. The loop scavenged engines were phased out in the late 1980's in favour of a new Schnuerle ported engine with an in-house manufactured Rossi carburettor which was also found on the loop scavenged speed 60 in its last year of production. in the early 80's disk induction was replaced by drum induction, this was because as the rpm reached increased in to the high 20,000 rpm range centripetal force could cause a disk to burst, drum induction being of smaller diameter could survive higher RPM. 90 size engines were the fist to go drum induction as they has the biggest diameter disk and hence the highest forces at a given RPM.

1960 Rossi 61 speed loop scavenged engine was first introduced.
1963 Rossi 61 speed loop scavenged in 1963 has a shiny crankcase and a black domed top cylinder head. Single piston ring and plug.
1964 Rossi 61 speed loop scavenged engines became dormant in 10 cc speed events replacing the McCoy 60 series 20 which had been the most successful speed engine since its introduction in 1949.
1971 Rossi 61 speed loop scavenged ABC or ringed - Matt crankcase and silver head - 2.2 bhp @ 22,500 rpm.
1972 (mid) Rossi 61 speed loop scavenged has Matt crankcase and and single pined piston ring or ABC no rotary exhaust restrict or which was still in use on 1971 r/c engines is now gone - 2.2 bhp @ 20,000 rpm.
1978 Rossi 65 RV three port Schnuerle (straight exhaust stack) ABC or Ringed. Rotary cast steel rotary disk induction. Black dome cylinder head. Ringed engine has cylinder jacket cooling and the ABC version head cooling.
1980 Rossi 65 2.9 bhp @ 21,000 rpm. Rotary cast steel disk induction. Silver head. Three port Schnuerle. 61 cast on crankcase but 65 stamped on mounting lug.
1981 Rossi 90 introduced with disk induction.
1990 Being sold Five port 61 and 65 - ABC - cylinder fins extended on to exhaust stub straight drum induction.
1992 Rossi 90 power 5.05 bhp @ 21,000 RPM on 10% nitro-methane. Cooling fins extended on to the exhaust stub. Straight drum induction.

Rossi 60 speed 10cc Marine (1970)

New

Cost £99.99

Capacity: 9.943 cc (0.6068 cu in)
Bore: 23.88 mm (0.940 in)
Stroke: 22.20 mm (0.874 in)
Power: 2.2 / 2.5 bhp @ 20,000 RPM (on pipe)

The exhaust throttle and spare con-rod, piston, rotary disk came with engine above

Rossi Speed 10cc Marine

Cost: £70.25

Capacity: 9.943 cc (0.6068 cu in)
Bore: 23.88 mm (0.940 in)
Stroke: 22.20 mm (0.874 in)
Power: 2.5+ bhp @ 20,000 RPM (on pipe)

Piston/Liner: ABC

Water cooled head fixed on with eight 1/8" BSW studs

Carburettor: Kavan clone but with 12.7mm bore (102 mm2 effective)

Rossi 60 speed ABC (1970)

Cost £93

Capacity: 9.943 cc (0.6068 cu in)
Bore: 23.88 mm (0.940 in)
Stroke: 22.20 mm (0.874 in)
Power: 1.4 BHP @ 15,000 RPM (no pipe) 2.2 bhp @ 22,500 rpm with tune pipe

Rossi 60 speed 10cc Marine (1973)

New
Cost £69

Never mounted or run, was seized solid due to old oil but ok now

Capacity: 9.943 cc (0.6068 cu in)
Bore: 23.88 mm (0.940 in)
Stroke: 22.20 mm (0.874 in)
Power: 2.2 / 2.5 bhp @ 20,000 RPM (on pipe)

Rossi 60 speed 10cc Marine (1973)

New
Cost £79.99

Capacity: 9.943 cc (0.6068 cu in)
Bore: 23.88 mm (0.940 in)
Stroke: 22.20 mm (0.874 in)
Power: 2.2 / 2.5 bhp @ 20,000 RPM (on pipe)

ROSSI 60 Speed marine 60 - 10CC (late 1973 to 1978)

New

Cost: £160

Capacity: 9.943 cc (0.6068 cu in)
Bore: 23.88 mm (0.940 in)
Stroke: 22.20 mm (0.874 in)
Power: 2.2 / 2.5 bhp @ 20,000 RPM (on pipe)

ABC liner and piston.

Rossi 61 Marine (1978)

Three port Schnuerle (straight exhaust stack) ABC or Ringed. Rotary cast steel rotary disk induction. Black dome cylinder head. Ringed engine has cylinder jacket cooling and the ABC version head cooling.

Rossi 61 (1978)

Cost £78

three port Schnuerle (straight exhaust stack) ABC or Ringed. Rotary cast steel rotary disk induction. Black dome cylinder head.

Rossi 61 Marine (1978)

Cost £66

Three port Schnuerle (straight exhaust stack) ABC or Ringed. Rotary cast steel rotary disk induction.

Power: 3.45 hp @ 24,500 rpm

Rossi 61 Marine (1978)

Cost £41

Three port Schnuerle (straight exhaust stack) Ringed. Rotary cast steel rotary disk induction. Black dome cylinder head. Ringed marine engine has cylinder jacket cooling.

Power: 3.45 hp @ 24,500 rpm

Rossi 61 (1978)

New
Cost £180

Three port Schnuerle (straight exhaust stack) ABC or Ringed. Rotary cast steel rotary disk induction. Black dome cylinder head.

Power: 3.2 hp @ 24,000

Rossi 61 Rear exhaust (1982)

Cost £95

Rossi 61 Marine  (1978)

Cost £93

Capacity: 10cc
Bore: (mm) 23.88 mm
Stroke: (mm) 22.22 mm
Power: 2.0 BHP @ 16,000 RPM
Crankshaft thread: M8x1.25
Weight: 580 gms

Rossi 65 Marine (1981?)

Cost £117

Capacity: 0.649 cu in (10.64 cc)
Bore: 0.972 in (24.7mm)
Stroke: 0.875 in (22.2 mm)
Power: 3.13 @ 19,600 RPM

fitted with custom back plate and os carb

Rossi 90 DS - RV RC marine (1981)

Rossi 90 introduced in 1981 with rear disk induction.

Rossi 90 DS - RV RC marine (1983)

Cost £70

Rossi 90 DS RV RC Marine

Cost £265

Rossi 90 DS - RV RC marine (1983)

Cost £85

Rossi 90 DS - RV RC marine (1984?)

Cost £51

Rossi 90 DS - RV RC 3+2 port (2000)

New

Cost £188

Capacity: 15 cc
Power: 5.8 HP
RPM: 23.000
Weight: 805 gr.
Standard plug

Rossi 90 DS - RV RC 3+2 port (1990)

Cost £81

Capacity: 15 cc
Power: 5.8 HP
RPM: 23.000
Weight: 805 gr.
Standard plug

Cylinder fins extended on to exhaust stub straight drum induction

Rossi 93 R 105 3+2 port  (circa 2000)

New

Cost £200

18 cc
3+2 ports., , . With new
6.97 HP @ 24.000 RPM
Weight 830 gr
Bi-Turbo RB8 Glow plug

Royal

Royal was a US company based in Colorado in the late 1980’s that had 28, 40 and 45 engines made in Taiwan, R.O. China by Leo engines who also made the Thunder Tiger range of engines. All the Royal engine range were virtual clones of OS FSR engines designed by an ex OS designer and many parts are interchangeable.

Royal 40

Cost: £29

OS 40FSR clone

SAITO

SAITO was created in 1949 and became SAITO SEISAKUSHO CO. LTD. in 1959, they are located in Ichikawa-shi, Chiba-ken, 2720024 Japan.

SAITO FA 65 (1986)

Type:4-stroke
Displacement:.65 cu in (10.6cc)
Bore:24.8 mm
Stroke:222.0 mm
HP:0.95
Weight:550 g
Crankshaft Threads:M7 x 1mm
Prop Range:11x7 thru 13x7

SAITO 100 GOLDEN KNIGHT

Cost £210
Benchmark Prop: 14 x 8 APC
Bore: 1.14 in (29.0mm)
Crankshaft Threads: M8x1.25mm
Cylinder Type: AAC
HP: 1.8
Displacement: 1.10 cu. in. (17.10 cc)
Weight: 19.5 oz
Fuel Type: Glow
Prop Range: 13 x 9 - 14 x 10
RPM Range: 2000 - 11000
Stroke: 1.02 in (26.0 mm)
Total Weight: 21.1 oz

SC

SC engines were produced in China as a state subsidised sideline by Sanye, a Chinese aerospace company. Production started in 1996 and ceased in early 2019.

SC 46 MARINE

New

Cost: £44

SC75 with OS GSA1 Gearbox

Cost £58
1.391:1 ratio
11.95cc
2.11 @ 12,256 rpm open exhaust

SC91 Marine

Cost £55 (un-run)

C.C.: - 14.79
Stroke: - 16.00
Power: (kW) - 2.0/16000
R.P.M.: - 2000-16500
Piston: - ABC
Crankshaft Thread: - 5/16 UNF

SC91A abc

Cost: 25

SC 91 FS

Cost £94

SKET

SKET is an abbreviation for "Schwermaschinenbau Kombinat Ernst Thalmann" (Heavy Machinery Ernst Thalmann) who were based in Magdeburg in the GDR and made model racing engines in the first half of the 1980's

SKET 15cc RCW (mid 1980's)

Cost £185

Second new engine purchased

made in GDR

SUEVIA

SUEVIA engines were made in west Germany in the late 1970's, a total of about 1,500 engines were made.

SUEVIA 25cc Type 252

Cost £135

Capacity: 25cc
Power: 3hp @ 11,000 RPM
Prop: 16X7.5 @ 7000 RPM
Side Port RC Glo Engine
Two Port Schnurele scavenge
roller bearing rear crankshaft bearing
NB runs in either direction!
Instructions

SUEVIA 25cc Type 252

Cost £55

Capacity: 25cc
Power: 3hp @ 11,000 RPM
Prop: 16X7.5 @ 7000 RPM
Reed induction RC Glo Engine
Two Port Schnurele scavenge
roller bearing rear crankshaft bearing
NB runs in either direction!
Instructions

Super Tigre

Super Tigre stopped making engines in Italy in about 2016 with some production being transferred to China for a little while.

Mr. Jaures Garofali, designer and manufacturer of the renowned “Supertigre” engines was born in 1920 at Bologna, Italy. In 1937 he joined forces with Valerio Ciampolini and Mr. Betuzzi, and formed the company O.S.A.M. (Officina Sperimentale Apparecchi Motori).

The very first Garofali designed engine was the OSAM G-1, from this point on, until the G33 of 1964, Garofali employed a Sequential numbering system to identify his engines. Minor changes to an existing G number only resulted in a different mark e.g. a G15 mkII.

The large G found on the crankcases standing of course for Garofali. The first engine to be actually branded as a Super Tigre was the G-19 of 1949.

Super Tigre G20/19 (1965)

Super Tigre X21 RE (1979)

Capacity: 3.418 cc (0.2086 cu in)
Bore: 16 mm (0.63 in)
Stroke: 17 mm (0.669 in)
Compression Ratio: 10 : 1
Porting: Schnuerle
Power: 1.02 BHP @ 25,500 RPM

Super Tigre G.40R R/C (1968)

Capacity: 0.462 cc (0.3944 cu in)
Bore: 21.5 mm (0.8465 in)
Stroke: 17.8 mm (0.7008 in)
Compression Ratio:
Piston & Liner: steel liner/ringed piston
Crankshaft bearings: twin ball bearings
Weight: 12 oz
Power: 0.59 BHP @ 14,300 RPM

Super Tigre X40 FI (1977)

Cost £40

Capacity: 6.462 cc (0.3944 cu in)
Bore: 21.5 mm
Stroke: 17.8 mm
Compression Ratio: 10.7 : 1
Weight: 340 GMS
Porting: Schnuerle
Piston and Liner: ABC
Power: 1.5 BHP @ 24,500 RPM

Super Tigre X40 FI

Cost £21

Capacity: 6.462 cc (0.3944 cu in)
Bore: 21.5 mm
Stroke: 17.8 mm
Compression Ratio: 10.7 : 1
Weight: 340 GMS
Porting: Schnuerle
Piston and Liner: ABC
Power: 1.5 BHP @ 24,500 RPM

Super Tigre X40 FI Marine (1977)

Cost £26

Capacity: 6.462 cc (0.3944 cu in)
Bore: 21.5 mm
Stroke: 17.8 mm
Compression Ratio: 10.7 : 1
Weight: 340 GMS
Porting: Schnuerle
Piston and Liner: ABC
Power: 1.5 BHP @ 24,500 RPM

Super Tigre X40R (1974)

Cost £127

Capacity: 6.462 cc (0.3944 cu in)
Bore: 21.5 mm
Stroke: 17.8 mm
Compression Ratio: 10.7 : 1
Porting: Schnuerle
Piston and Liner: ABC

Cost £90.75

early engine with rotatable split crankcase

Capacity: 6.462 cc (0.3944 cu in)
Bore: 21.5 mm
Stroke: 17.8 mm
Compression Ratio: 10.7 : 1
Porting: Schnuerle
Piston and Liner: ABC

Super Tigre X40R

Cost £127

Capacity: 6.462 cc (0.3944 cu in)
Bore: 21.5 mm
Stroke: 17.8 mm
Compression Ratio: 10.7 : 1
Porting: 5 port Schnuerle
Piston and Liner: ABC

Super Tigre X45FI SP-TS (1979)

Cost £64

Capacity: 7.499 cc (0.4576 cu in)
Bore: 21.85 mm (0.8602 in)
Stroke: 20 mm (0.7874 in)
Compression Ratio: 10.5 : 1
Piston/Liner: ABC
Power: 1.31 @ 16,200 RPM
Weight: 369 grams

Super Tigre X45FI SP-TS (1979)

Cost £37.50

Capacity: 7.499 cc (0.4576 cu in)
Bore: 21.85 mm (0.8602 in)
Stroke: 20 mm (0.7874 in)
Compression Ratio: 10.5 : 1
Piston/Liner: ABC
Power: 1.31 @ 16,200 RPM
Weight: 369 grams

Cost: £25

Serial number: 1158

Cost £53

Capacity: 9.953cc (0.607 cu in)
Bore: 24 mm
Stroke: 22 mm
Power: 2.2 bhp @ 16,500 rpm
Porting: TST ‘Travasi Super Tigre’ ST’s own version of Schnuerle porting

Cost £82

Capacity: 9.95 cc (0.607 cu in)
Bore: 24 mm ( 0.9448 in)
Stroke: 22 mm ( 0.866 in)
Compression ratio: 9.6 : 1
Porting: Schnuerle
Weight: 24.1 oz
Crankshaft thread: 5/16 x 24
Power: 2.13 BHP @ 17,450 RPM

Cost £68

Cost £31

SUPER TIGRE S75 (1983)

Capacity: 12.21 cc (0.7452 cu in)
Bore: 26 mm (1.024 in)
Stroke: 23mm (0.9055 in)
Compression Ratio: 10.8 : 1
Porting: Schnuerle
Power: 1.86 BHP @ 15,100 RPM

Super Tigre G90

Cost £76

Super Tigre S90

Cost: £38.50

Super Tigre S.3000 (1992)

Cost £38.00

Capacity: 29.83 cc (1.82 cu in)
Bore: 35 mm (1.378 in)
Stroke: 31 mm (1.22 in)
Compression ratio: 11.5 : 1
Porting: TST Schnuerle
Weight: 1.174 kg
Propeller: 18x8 20x6 20x8
Power: 2.96 @ 7,900 RPM

Super Tigre G4500 (1992)

Cost £93 (New)

Capacity: 2.768 cu in (45.367 cc)
Bore: 1.575 in (40 mm)
Stroke: 1.421 in (36 mm)
Power: 4.59 @ 9,400 RPM
Compression Ratio: 9.17 : 1
Porting: TST Schnuerle
Blowdown: 20 degrees
Weight: 1.897 kg
Propeller: 24x8 22x8 22x10
Fuel oil content: 10% at least half of which should be castor
Crankshaft thread: M10 x 1.25

Super Tigre G4500 (1992)

Cost £105

Capacity: 2.768 cu in (45.367 cc)
Bore: 1.575 in (40 mm)
Stroke: 1.421 in (36 mm)
Power: 4.59 @ 9,400 RPM
Compression Ratio: 9.17 : 1
Porting: TST Schnuerle
Blowdown: 20 degrees
Weight: 1.897 kg
Propeller: 24x8 22x8 22x10
Fuel oil content: 10% at least half of which should be castor
Crankshaft thread: M10 x 1.25

Super Tigre G4500 (1992)

Capacity: 2.768 cu in (45.367 cc)
Bore: 1.575 in (40 mm)
Stroke: 1.421 in (36 mm)
Power: 4.59 @ 9,400 RPM
Compression Ratio: 9.17 : 1
Porting: TST Schnuerle
Blowdown: 20 degrees
Weight: 1.897 kg
Propeller: 24x8 22x8 22x10
Fuel oil content: 10% at least half of which should be castor
Crankshaft thread: M10 x 1.25

Super Tigre G4500 (1992)

Capacity: 2.768 cu in (45.367 cc)
Bore: 1.575 in (40 mm)
Stroke: 1.421 in (36 mm)
Power: 4.59 @ 9,400 RPM
Compression Ratio: 9.17 : 1
Porting: TST Schnuerle
Blowdown: 20 degrees
Weight: 1.897 kg
Propeller: 24x8 22x8 22x10
Fuel oil content: 10% at least half of which should be castor
Crankshaft thread: M10 x 1.25

Taipan

Taipan engines were designed by Gordon Burford and made by Gordon Burford & Co. Pty. Ltd. in Grange, South Australia. The brand name Taipan was used from 1956 until the the late 1970’s, other brand names used earlier by Gordon Burford include "Gee Bee" from 1946 to 1950, "Sabre" from 1950 to 1955 and “Glow Chief" from 1957 until 1965.

Taipan 15 TBR (1972)

Cost £110

Capacity: 2.474 cc (0.151 cu in)
Bore: 15mm (0.59.05 in)
Stroke: 14mm (0.5512 in)
Compression Ratio: 10:1
Steel liner cast iron piston
0.5 BHP @ 22,500 RPM

Taipan 19 BB R/C series 67 (1967)

Cost £30

Capacity: 3.233 cc (0.1973 cu in)
Bore: 0.634 in
Stroke: 0.625 in
Hardened steel liner with leaped cast iron piston
Plain bearing or Ball raced crankshaft versions
Power: 0.25 @ 12,000 RPM

Taipan 3.5 Black Head marine (1972)

Cost £25

Capacity: 0.212 cu in ( 3.476cc)
Bore: 0.66 in
Stroke: 0.62 in
Steel liner cast iron piston
Power: 0.34 BHP @ 14,000 RPM

Taipan 3.5 Black Head (1972)

Cost £30

Capacity: 0.212 cu in ( 3.476cc)
Bore: 0.66 in
Stroke: 0.62 in
Steel liner cast iron piston
Power: 0.34 BHP @ 14,000 RPM

Taipan 3.5 Gold Head marine (1973)

Cost £28

Capacity: 0.212 cu in ( 3.476cc)
Bore: 0.66 in
Stroke: 0.62 in
Steel liner cast iron piston
Power: 0.34 BHP @ 14,000 RPM

Taipan 61 R/C (1968)

Capacity: 0.6072 cu in (9.95 cc)
Bore: 0.940 in
Stroke: 0.875 in
Hardened steel liner/twin ring aluminium piston
Power: 0.94 BHP @ 13,900 RPM

TechnoPower

Technopower radial engines were built by Technopower-II, Inc. of Orland Park, Illinois, USA. In 1977 the rights to the engines were purchased from the engines English designer, Glen K. Hargrave, by American Wally Warner. Wally created the company "Technopower-II inc." to produce and market the five and seven cylinder engines in both glow and spark ignition. Early engines had black plastic rocker box covers, later examples had cast aluminium ones as the plastic ones suffered from heat distortion. In 1983 a more powerful engine was added to the range, the "Big Bore 5" followed by the"Big Bore 7". Wally Warner eventually sold the engine rights to a new owner who has since introduced an impressive 9 cylinder engine to the range and a three cylinder engine both also designed by Glen K. Hargrave. Fuel must have at least 10% castor oil with 5% nitromethane recommended.

$2500.00 new         Don't use idle bar glow plugs!

Technopower II "A series" 7 cylinder radial engine (1981)
 

Four-stroke glow plug pushrod-operated overhead valves. Twin ball bearing supported crankshafts, twin ball bearing supported cam carriers with needle bearing master connecting-rod and OS 10 FSR carburettor. 1.18 cid 3/4-1 horsepower range originally designed by Englishman Glen K. Hargrave in 1975 based on the Armstrong-Siddeley Genet Major 1A engine of the 1930's and containing over 300 parts.

Manual

Capacity: 22.17 cc
Bore: 15.87 mm
Stroke: 16 mm
Compression ratio: 8:1
Maximum Power: 0.82 hp @ 8,700 rpm (never run above 8,000 rpm static)
Weight: 913 gms
Firing order: 1-3-5-7-2-4-6
Size: 6”  Diameter
Propeller: 14x6 or 14x8
Serial number: A7 015

Number A1 015
7 cylinder radial
Chromed and Ground Cylinders
Stainless Steel Valves
Bronze Valve Guides
Bronze Cam Follower Bushings
Valve clearance .002" to .003"

TERMIK T10M (ТЕРМИК T10M)

Termic engines date from the late 1990's and were produced by the TERMIC Industrial Association located in Krashoyarsk, Siberia, Russia. The engine designs were created by Anatoly Kohaniuk of Moscow, Russia, who was a former World Speed F2A record holder

TERMIK T10M (1998)

Cost: £160

Thunder Tiger

Formed in 1979, Thunder Tigre are based in Taichung City, Taiwan (R.O.C.) and distributed in the UK by Ripmax Ltd.

Thunder Tiger Pro 12M

Cost £16

Capacity: 0.12 cu in (1.94cc)
Bore: 14 mm
Stroke: 13.7 mm
Power: 0.43 BHP @ 27,000 RPM
RPM Range: 3,000 to 29,000

Thunder Tiger 40

Cost £16

TONO

Tono engines were designed and produced from the early 1964 to the early 1968 and designed by Frantisek Stary. Tono engines were produced by Komunalni Sluzby MestNV (a cooperative unit) in Vysoke Myto, Czechoslovakia. Tono ceased production in approximately 1968.

TONO 5.6 R/C (1964)

Capacity: 5.6 cc (0.339 cu in)
Bore: 20 mm
Stroke: 17.7 mm
Power: 0.778 BHP @ 16,000 RPM

TONO 10 R/C (1964)

Cost £126

Capacity: 9.84 cc
Bore: 25 mm
Stroke: 20 mm
Power: 1.06 BHP @ 13,700 RPM

lapped cast iron baffle-less piston. Design and construction are consistent with those of a smaller engine.

Toyan

Toyan engines are produced in Guangdong, China, by Toyan Precision Technology Co., LTD. Toyan was founded by model engine enthusiast and machinist Tom Teng in 2013 with the aim of producing four stroke model engines commercially.

Toyan FS-S100 RC
 

Cost £135

Capacity: 3.5cc
Bore: 16.6 mm
Stroke: 17 mm
RPM Range: 2,500 to 13,50 RPM
Power: 0.5 BHP @ 12,000 RPM
Weight: 380g
Starting Battery: 7.4V 20C lithium

UEDA

Ueda engines were made by Ueda Mfg. Co. Ltd. of Tokyo, Japan between 1964 and 1970. The company was a subsidiary of Ueda Seisakusho Company Ltd. who had been making parts for cars since the end of WW2. The production of model engines was very much a minor sideline of Ueda Seisakusho Company Ltd. hence the formation of the subsidiary company Ueda Mfg. Co. Ltd., probably a vanity project driven by the personal interest of the son of M. Ueda who was Ueda Seisakusho’s president. All Ueda engines looked both unusual and interesting but were poor performers often suffering from mechanical failures, a result of both poor quality control and design errors.

When the parent company expanded its premises to scale up car part production in 1970 model engine production ceased, this suggests model engines were only produced when the parent company had spare production capacity. It’s unclear exactly how many UEDA engines were produced in the six years they were produced but it would probably be in the range of 10,000 to 40,000. (when capacity to manufacture model engines was available it was said only about 2,000 were made in a month, the lower estimate assumes consecutive serial numbers applied across all engine models and the higher number assumes separate serial number ranges for each model/capacity of engine produced).

Ueda 61 RC (1967)

Cost £125

Capacity: 9.953 cc (0.6074 cu in)
Bore: 24 mm (0.9449 in)
Stroke: 22 mm (0.8661 in)
Power: 0.80 BHP @ 10,000 RPM

Ueda 61 RC (1967)

Cost £130

Capacity: 9.953 cc (0.6074 cu in)
Bore: 24 mm (0.9449 in)
Stroke: 22 mm (0.8661 in)
Power: 0.80 BHP @ 10,000 RPM

VECO (US)

The Veco .19, .29, and .35, ‘100 series’ were designed by Mel Anderson and produced by Veco Products, a subsidiary of Gil Henry’s company "Henry Engineering Co" located in Burbank, California, USA. All Veco ‘200 series’ engines including the VECO .61 of 1965, were designed by Clarence Lee and produced by K&B, the Veco engine range was taken over by K&B in 1969 who re-branded the engines, most as "K&B Torpedo’s". It is of note that Helmut Burnhardt made the Veco range under licence from K&B branded as "Veco Europe" they featured modified castings with removable front housings, they later sold the engines under their own name HB. Both K&B and HB engines have now been acquired by RJL Industries who supply engines and spare parts.

Veco 61 RC series 75 pumper

New

Cost: £62

VECO (Europe)

Helmut Burnhardt made the Veco range under licence from K&B branded as "Veco Europe" they featured modified castings with removable front housings, they later sold the engines under their own brand name HB. Both K&B and HB engines have now been acquired by RJL Industries who supply engines and spare parts.

Veco 19 series 100

Cost: £23

Veco 19 RC Marine

Cost £30

Capacity: 0.1998 cu in (3.274 cc)
Bore: 0.634 in (16.1 mm)
Stroke: 0.633 in (16.08 mm)
Power: 0.34 BHP @ 15,000 RPM

Veco 19 RC Marine

Cost £9.70

Capacity: 0.1998 cu in (3.274 cc)
Bore: 0.634 in (16.1 mm)
Stroke: 0.633 in (16.08 mm)
Power: 0.34 BHP @ 15,000 RPM

VECO 19 BB RC Series Europe

Cost 17

Capacity: 0.1998 cu in (3.274 cc)
Bore: 0.634 in (16.1 mm)
Stroke: 0.633 in (16.08 mm)
Power: 0.34 BHP @ 15,000 RPM

Veco 19 BB RC

Cost £16

Capacity: 0.1998 cu in (3.274 cc)
Bore: 0.634 in (16.1 mm)
Stroke: 0.633 in (16.08 mm)
Power: 0.34 BHP @ 15,000 RPM

Veco 21 Marine

Cost £30 New

Veco 61 (1971-1973)

Cost £85 New

Capacity: 9.953 cc (0.6074 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Power: 1.11 BHP @ 12,100 RPM
Weight: 425 grams
Porting: Loop scavenged
Piston/Liner: Steel Liner (originally chromed) & Dykes Ring

Veco 61 (1971-1973)

Cost £92 New

Capacity: 9.953 cc (0.6074 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Power: 1.11 BHP @ 12,100 RPM
Weight: 425 grams
Porting: Loop scavenged
Piston/Liner: Steel Liner (originally chromed) & Dykes Ring

Veco 61 Marine (1971-1973)

Cost £37

Capacity: 9.953 cc (0.6074 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Power: 1.11 BHP @ 12,100 RPM
Porting: Loop scavenged
Piston/Liner: Steel Liner (originally chromed) & Dykes Ring

Veco 61 Marine (1971-1973)

Capacity: 9.953 cc (0.6074 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Power: 1.11 BHP @ 12,100 RPM
Porting: Loop scavenged
Piston/Liner: Steel Liner (originally chromed) & Dykes Ring

Veco 61 (1971-1973)

Cost £17.50

Capacity: 9.953 cc (0.6074 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Power: 1.11 BHP @ 12,100 RPM
Weight: 425 grams
Porting: Loop scavenged
Piston/Liner: Steel Liner (originally chromed) & Dykes Ring

WEBRA

Webra engines were produced by Martin Eberth. The older loop scavenged 60 and 40 engines were designed by Gunther Bodemann in 1964 and produced in Webra’s factory in Berlin, Germany. The Webra Speed 120, 60, 40 and 20 were all designed by ex HP designer Peter Billes who joined Webra in late 1972 which explains their visual similarity to the HP40 engines which he also designed while working for HP. Initially all speed engines were produced by Webra’s factory in Austria but from 1978 were produced in Webra’s factory in Berlin, Germany. The tumbled polished finish was changed at this time to sandblasted.

Webra Speedy 1.8 (1978 - 1980)

Cost £35

Capacity: 1.8cc (0.09 in)
Bore: 12.5 mm
Stroke: 13.5 mm
Power: 0.199 @ 15,100 RPM (crankshaft)
Recommended propeller: 7x4 / 7x5 in
Piston and liner: ABC
Porting: Schnuerle
Weight air cooled: 137 grams
Plug type: Glow Plug

Webra Speedy 1.8 (1978 - 1980)

Cost £45

Capacity: 1.8cc (0.09 in)
Bore: 12.5 mm
Stroke: 13.5 mm
Power: 0.199 @ 15,100 RPM (crankshaft)
Recommended propeller: 7x4 / 7x5 in
Piston and liner: ABC
Porting: Schnuerle
Weight air cooled: 137 grams
Plug type: Glow Plug

Webra Speedy 1.8M (1978 - 1980)

Capacity: 1.8cc (0.09 in)
Bore: 12.5 mm
Stroke: 13.5 mm
Power: 0.6 HP @ 22,000 RPM (crankshaft)
Piston and liner: ABC
Porting: Schnuerle
Weight air cooled: 137 grams
Plug type: Glow head

Webra Sport 1.5cc

Cost: £30

Webra Glow Star Marine 3.5cc (1964 to 1977)

Cost £26

Designed by Guenther Bodemann

Capacity: 3.422 cc (0.2088 cu in)
Bore: 16.5mm
Stroke: 16mm
Power: 0.247 BHP @ 2,200 RPM
Porting: Loop Scavenged
Piston/Liner: Steel/Cast Iron

Webra Glow Star Marine 3.5cc (1964 to 1977)

Cost £30

Designed by Guenther Bodemann

Capacity: 3.422 cc (0.2088 cu in)
Bore: 16.5mm
Stroke: 16mm
Power: 0.247 BHP @ 2,200 RPM
Porting: Loop Scavenged
Piston/Liner: Steel/Cast Iron

Webra 20 Speed marine (Feb 1977 on)

Cost £18

Introduced as a replacement for the Glow Star, originally with a steel liner and a lapped cast iron piston and a M6 crankshaft thread. Later engines had an ABN piston &
liner and a stronger crankshaft and modified crankcase.

Capacity: 3.4221 cc (0.2088 ci)
Bore: 16.5 mm
Stroke: 16 mm
Porting: Schnuerle
Compression ratio: 9:1
Power: 0.62 BHP @ 19,500 RPM without tune pipe
Crankshaft thread: M6X1 or 1/4" 28 UNF on late models
Piston & Liner: Steel/cast iron, ABN on late models

Webra 20 Speed marine (Feb 1977 on)

Cost £29

Introduced as a replacement for the Glow Star, originally with a steel liner and a lapped cast iron piston and a M6 crankshaft thread. Later engines had an ABN piston &
liner and a stronger crankshaft and modified crankcase.

Capacity: 3.4221 cc (0.2088 ci)
Bore: 16.5 mm
Stroke: 16 mm
Porting: Schnuerle
Compression ratio: 9:1
Power: 0.62 BHP @ 19,500 RPM without tune pipe
Crankshaft thread: M6X1 or 1/4" 28 UNF on late models
Piston & Liner: Steel/cast iron, ABN on late models

Webra Speed 20 marine (Feb 1977 on)

Cost: £83

Introduced as a replacement for the Glow Star, originally with a steel liner and a lapped cast iron piston and a M6 crankshaft thread. Later engines had an ABN piston &
liner and a stronger crankshaft and modified crankcase.

Capacity: 3.4221 cc (0.2088 ci)
Bore: 16.5 mm
Stroke: 16 mm
Porting: Schnuerle
Compression ratio: 9:1
Power: 0.62 BHP @ 19,500 RPM without tune pipe
Crankshaft thread: M6X1 or 1/4" 28 UNF on late models
Piston & Liner: Steel/cast iron, ABN on late models

Webra Speed 40 (1975 ringed version)

Capacity: 6.442 cc (0.3931 cu in)
Bore: 21.00 mm (0.8268 in)
Stroke: 18.6 mm (0.7323 in)
Compression ratio: 12:1
Porting: Schnuerle
Power: 1.10 BHP @ 17,100 RPM (5% nitro-methane)
Crankshaft thread: 1/4-28 UNF
Piston and Liner: steel liner / Dykes ring
Crankcase bolts: M3.5 x 0.6

Webra Speed 40 (1975 ringed marine)

Cost £24.00

Capacity: 6.442 cc (0.3931 cu in)
Bore: 21.00 mm (0.8268 in)
Stroke: 18.6 mm (0.7323 in)
Compression ratio: 12:1
Porting: Schnuerle
Power: 1.10 BHP @ 17,100 RPM (5% nitro-methane)
Crankshaft thread: 1/4-28 UNF
Piston and Liner: steel liner / Dykes ring
Crankcase bolts: M3.5 x 0.6

Webra Speed 40 (1975 ringed version)

Cost £15.50

Capacity: 6.442 cc (0.3931 cu in)
Bore: 21.00 mm (0.8268 in)
Stroke: 18.6 mm (0.7323 in)
Compression ratio: 12:1
Porting: Schnuerle
Power: 1.10 BHP @ 17,100 RPM (5% nitro-methane)
Crankshaft thread: 1/4-28 UNF
Piston and Liner: steel liner / Dykes ring
Crankcase bolts: M3.5 x 0.6

Webra Speed 40 (1975 ringed version)

Cost £20

Capacity: 6.442 cc (0.3931 cu in)
Bore: 21.00 mm (0.8268 in)
Stroke: 18.6 mm (0.7323 in)
Compression ratio: 12:1
Porting: Schnuerle
Power: 1.10 BHP @ 17,100 RPM (5% nitromethane)
Crankshaft thread: 1/4-28 UNF
Piston and Liner: steel liner / Dykes ring
Crankcase bolts: M3.5 x 0.6

Webra 40 glow engine (1975)

Cost: £22

Capacity: 6.442 cc (0.3931 cu in)
Bore: 21.00 mm (0.8268 in)
Stroke: 18.6 mm (0.7323 in)
Compression ratio: 12:1
Porting: Schnuerle
Power: 1.10 BHP @ 17,100 RPM (5% nitromethane)
Crankshaft thread: 1/4-28 UNF
Piston and Liner: steel liner / Dykes ring
Crankcase bolts: M3.5 x 0.6

Webra 40 marine glow engine (1975)

Cost: £36

Capacity: 6.442 cc (0.3931 cu in)
Bore: 21.00 mm (0.8268 in)
Stroke: 18.6 mm (0.7323 in)
Compression ratio: 12:1
Porting: Schnuerle
Power: 1.10 BHP @ 17,100 RPM (5% nitromethane)
Crankshaft thread: 1/4-28 UNF
Piston and Liner: steel liner / Dykes ring
Crankcase bolts: M3.5 x 0.6

Webra Speed 40 (1975 ringed version)

Cost £31

Capacity: 6.442 cc (0.3931 cu in)
Bore: 21.00 mm (0.8268 in)
Stroke: 18.6 mm (0.7323 in)
Compression ratio: 12:1
Porting: Schnuerle
Power: 1.10 BHP @ 17,100 RPM
Crankshaft thread: 1/4-28 UNF
Piston and Liner: steel liner / Dykes ring
Crankcase bolts: M3.5 x 0.6

Webra Speed 40 (1975 ringed version)

Cost £14.45 Fitted with ED carb and homemade water-jacket

Capacity: 6.442 cc (0.3931 cu in)
Bore: 21.00 mm (0.8268 in)
Stroke: 18.6 mm (0.7323 in)
Compression ratio: 12:1
Porting: Schnuerle
Power: 1.10 BHP @ 17,100 RPM
Crankshaft thread: 1/4-28 UNF
Piston and Liner: steel liner / Dykes ring
Crankcase bolts: M3.5 x 0.6.

Webra Speed 40 (1975 ringed version)

Cost £31 Fitted with ED carb and homemade water-jacket.

Capacity: 6.442 cc (0.3931 cu in)
Bore: 21.00 mm (0.8268 in)
Stroke: 18.6 mm (0.7323 in)
Compression ratio: 12:1
Porting: Schnuerle
Power: 1.10 BHP @ 17,100 RPM
Crankshaft thread: 1/4-28 UNF
Piston and Liner: steel liner / Dykes ring
Crankcase bolts: M3.5 x 0.6.

Webra Blackhead 10cc R/C Marine (1967 - 1999)

Capacity: 9.953cc (0.6074 in)
Bore: 24 mm (0.9449 in)
Stroke: 22mm (0.8661 in)
Power: 1.13 bhp @ 12,100 rpm
Porting: Cross flow

Piston/Cylinder: Ringed piston, steel liner

Originally designed by Gunenther Bodemann as the 61 r/c in 1964 and was sild commercially in 1967. In 1969 the improved Blackhead version was launched. Later engines from the late 90s were marked Webra 10 ccm and marketed as the Webra Silverline .61 and had about 10% increased power.

Webra Speed 61F RC Marine

Cost £35

Webra Speed 61F (1973 - 1978)

Cost £50

Capacity: 9.953 cc (0.6073 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Weight: 465 grams (16.4 oz)
Porting: Schnuerle
Piston and liner: steel cylinder / dykes ringed piston
Power: 1.495 BHP @ 15,100 RPM

Webra Speed 61F

Cost £26

Webra Speed 61F (1973 - 1978)

Cost £41.45

Capacity: 9.953 cc (0.6073 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Weight: 465 grams (16.4 oz)
Porting: Schnuerle
Piston and liner: steel cylinder / dykes ringed piston
Power: 1.495 BHP @ 15,100 RPM

Webra Speed 61R Marine (1974 - 1978)

Capacity: 9.953 cc (0.6073 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Compression Ratio: 11.3 to 1
Porting: Schnuerle
Power: 1.62 BHP @ 16,550 RPM (open exhaust)

Cost £36.50

Capacity: 9.953 cc (0.6073 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Weight: 475 grams (16.75 oz)
Porting: Schnuerle
Power: 2.5 BHP @ 17,000 RPM
Piston & liner: steel cylinder / ringed

Webra Speed 61R (1974 - 1978)

Capacity: 9.953 cc (0.6073 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Compression Ratio: 11.3 to 1
Porting: Schnuerle
Weight: 509 grams (18 oz)
Power: 1.62 BHP @ 16,550 RPM (open

Webra Speed 61R (1974 - 1978)

Cost £35

Capacity: 9.953 cc (0.6073 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Compression Ratio: 11.3 to 1
Porting: Schnuerle
Weight: 509 grams (18 oz)
Power: 1.62 BHP @ 16,550 RPM (open exhaust)

Webra Speed 61WR Marine
(1974 - 1978)

Cost £40

From mid 1978 Webra Speed 61's engines have bead blasted castings and are called "Campion", they have increased performance due to extended "blow down" for tuned exhausts, and were available in ABC versions as well as ringed from 1991 with cotter pin carb fitting and bigger front bearing.

Webra Speed 61F (1973 - 1978)

Cost £40

Capacity: 9.953 cc (0.6073 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Weight: 475 grams (16.75 oz)
Porting: Schnuerle
Piston and liner: steel cylinder / dykes ringed piston
Power: 1.63 BHP @ 15,200 RPM

Webra Speed 61F (1973 - 1978)

Cost £38

Capacity: 9.953 cc (0.6073 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Weight: 475 grams (16.75 oz)
Porting: Schnuerle
Piston and liner: steel cylinder / dykes ringed piston
Power: 1.63 BHP @ 15,200 RPM

Webra Speed 61F "CHAMPION"

Cost 52

Capacity: 9.953 cc (0.6073 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Weight: 475 grams (16.75 oz)
Porting: Schnuerle
Power: 1.63 BHP @ 15,200 RPM
Piston & liner: steel cylinder / dykes ring

Webra Speed 61F Champion

Cost £56

Webra Speed 61wr
"CHAMPION" (mid 1978 on)

Cost £80

Capacity: 9.953 cc (0.6073 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Weight: 475 grams (16.75 oz)
Porting: Schnuerle
Power: 2.5 BHP @ 17,000 RPM
Piston & liner: steel cylinder / dykes ring

Webra Speed 61wr
"CHAMPION" (mid 1978 on)

Cost £70

Capacity: 9.953 cc (0.6073 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Weight: 475 grams (16.75 oz)
Porting: Schnuerle
Power: 2.5 BHP @ 17,000 RPM
Piston & liner: steel cylinder / dykes ring

Webra Speed 61F "CHAMPION"
(mid 1991 on)

Cost £21

Champion has cotter pin carb fitting and bigger front bearing

Capacity: 9.953 cc (0.6073 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Weight: 475 grams (16.75 oz)
Porting: Schnuerle
Piston and liner: steel cylinder / dykes ringed piston
Power: 1.63 BHP @ 15,200 RPM

Webra Speed 61F

Cost: £30

Late Austrian model - Clinch bolt for carb and sand blasted finish

Webra Speed 61 Racing Marine

Cost £90

Capacity: 9.953 cc (0.6073 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Weight: 475 grams (16.75 oz)
Porting: Schnuerle
Piston and liner: steel cylinder / dykes

Webra Speed 61 Racing Marine

Cost £125

Capacity: 9.953 cc (0.6073 cu in)
Bore: 24 mm ( 0.9449 in)
Stroke: 22 mm (0.8661 in)
Weight: 475 grams (16.75 oz)
Porting: Schnuerle
Piston and liner: ABC

WEBRA 80

Cost £44

Capacity: 12cc (0.73 cu in)
Bore: 24.7cc
Stroke: 25 mm
Power: 2.5 bhp
RPM range: 2,500 to 16,000 rpm
Weight: 480 gm

Webra Speed 90 (1977-1978)

Cost £52.50

Capacity: 14.9 cc (0.908 cu in)
Bore: 27 mm (1.063 in)
Stroke: 25 mm (0.9843 in)
Compression Ratio: 11.2 to 1
Porting: Schnuerle
Weight: 677 grams (23.9 oz)
Piston and cylinder: ringed steel line
Crankshaft thread: M8 x 1.25
Power: 2.56 BHP @ 13,000 RPM

Webra Speed 90 (1977-1978)

Cost £95

Capacity: 14.9 cc (0.908 cu in)
Bore: 27 mm (1.063 in)
Stroke: 25 mm (0.9843 in)
Compression Ratio: 11.2 to 1
Porting: Schnuerle
Weight: 677 grams (23.9 oz)
Piston and cylinder: ringed steel liner
Crankshaft thread: M8 x 1.25
Power: 2.56 BHP @ 13,000 RPM

From mid 1978 Webra Speed 90's engines have a reduced width exhaust cut out, Dyna-mix carburettors and are available in ABC WR versions as well as ringed. Production was in Germany

1978 Webra 91 speed marine (mid 1978 on)

Cost £53

Capacity: 14.9 cc (0.908 cu in)
Bore: 27 mm (1.063 in)
Stroke: 25 mm (0.9843 in)
Compression Ratio: 11.2 to 1
Porting: Schnuerle
Weight: 677 grams (23.9 oz)
Piston and cylinder: ringed steel liner or ABC
Crankshaft thread: M8 x 1.25
Power: 2.56 BHP @ 13,000 RPM

1980 Webra 91 marine  (mid 1978 on)

Cost £34.

Capacity: 14.9 cc (0.908 cu in)
Bore: 27 mm (1.063 in)
Stroke: 25 mm (0.9843 in)
Compression Ratio: 11.2 to 1
Porting: Schnuerle
Weight: 677 grams (23.9 oz)
Piston and cylinder: ringed steel liner or ABC
Crankshaft thread: M8 x 1.25
Power: 2.56 BHP @ 13,000 RPM

Webra Speed 90 (mid 1978 on)

Capacity: 14.9 cc (0.908 cu in)
Bore: 27 mm (1.063 in)
Stroke: 25 mm (0.9843 in)
Compression Ratio: 11.2 to 1
Porting: Schnuerle
Weight: 677 grams (23.9 oz)
Piston and cylinder: ringed steel liner or ABC
Crankshaft thread: M8 x 1.25
Power: 2.56 BHP @ 13,000 RPM (3.2 BHP  abc)

Webra Speed 90 (mid 1978 on)

Cost £53

Capacity: 14.9 cc (0.908 cu in)
Bore: 27 mm (1.063 in)
Stroke: 25 mm (0.9843 in)
Compression Ratio: 11.2 to 1
Porting: Schnuerle
Weight: 677 grams (23.9 oz)
Piston and cylinder: ringed steel liner or ABC
Crankshaft thread: M8 x 1.25
Power: 2.56 BHP @ 13,000 RPM (3.2 BHP abc)

Webra Speed 90 (mid 1978 on)

New
Cost £105

Capacity: 14.9 cc (0.908 cu in)
Bore: 27 mm (1.063 in)
Stroke: 25 mm (0.9843 in)
Compression Ratio: 11.2 to 1
Porting: Schnuerle
Weight: 677 grams (23.9 oz)
Piston and cylinder: ringed steel liner or ABC
Crankshaft thread: M8 x 1.25
Power: 2.56 BHP @ 13,000 RPM (3.2 BHP if abc)

Webra Speed 90 (mid 1978 on)

Cost £32

Capacity: 14.9 cc (0.908 cu in)
Bore: 27 mm (1.063 in)
Stroke: 25 mm (0.9843 in)
Compression Ratio: 11.2 to 1
Porting: Schnuerle
Weight: 677 grams (23.9 oz)
Piston and cylinder: ringed steel liner or ABC
Crankshaft thread: M8 x 1.25
Power: 2.56 BHP @ 13,000 RPM (3.2 BHP if abc)

Webra Speed 91 P5

New

Capacity: 15cc (0.91 cuin)
Bore: 27.60mm
Stroke: 25.00mm
Power: 2.39 BHP (3.25kw)
RPM range: 2,000 to 16,000 RPM
Hardened Steel cylinder with ringed piston
Crankshaft thread: M8Carburettor: Webra TN2

Cost £200

WEBRA T4

new

Cost: £180

Webra 120

Cost £60

Capacity: 19.79 cc (1.207 cu in)
Bore: 30 mm (1.181 in)
Stroke: 28 mm (1.102 in)
Compression Ratio: 6.7 to 1
Porting: Schnuerle
Weight: 26.8 oz
Piston and cylinder: ringed steel liner or ABC
Crankshaft thread: M8 x 1.25
Power: 3.2 BHP @ 13,000

Wen Mac

Wen Mac MkII 049

Cost: £8

Wen Mac MkV 049

Cost: £8

Edgar T Westbury Designs

Westbury Ensign 10cc Glow

Cost: £64

Yamada

Yamada engines were designed and made by the Yamada Manufacturing Company Ltd. Inuyama, Japan. They were produced from the early 1970's until the early 2000's

Yamada YS-60 (1972)

Cost £46

Bore: 24mm
Stroke: 22mm
Capacity: 9.95cc
Power: 1.35 bhp @ 15,000 rpm
Porting: Crossflow
Cylinder/Piston: Steel liner/ringed piston

Sold for £45.50 in 1975

YAMADA YS 60SR Marine

Cost: £290

YS 61ST2 (about 2000)

Cost £70

Short stroke heli engine, rear crankcase tap pressurises tank via one way valve. fuel tank outlet to regulator via filter. Big carb needle is mid speed, smaller needle full speed, idle is via small brass screw in centre of carb barrel.

Bore: 24mm
Stroke: 22mm
Capacity: 9.95cc
weight 540g
2000-18000 rpm
single piston ring

Yamada YS F-91AC Supercharged (mid 1990's)

Cost £108

The engine has a supercharging system using an air chamber box pressurised by crankcase pressure combined with a double throttle valve system allowing a larger charge of fuel/air mixture to enter the intake valve than normal generating increased power.

Capacity: 14.95cc
Bore: 27.7mm
Stroke: 24.08mm
RPM range: 2,000~13,000 r.p.m.
Gross weight: 750g
Power Output: About 43% higher than a normal 15cc four stroke engine.

The Dooling 61 proved to be a potent racing engine, however when highly tuned and using exotic fuels had a tendency for the crankcase crack at the base of the bulge bypass. The Doolings main and use was in tethered cars and in consequence in 5 the American Miniature Car Racing Association (AMCRA) approached Bruce Underwood with the problem and he made a new heavily reinforced crankcase anodised a golden yellow as an after-sale upgrade. When Dooling ceased production of the 61 he began producing the whole engine, it eventually evolved well beyond the original Dooling design, the last model was the 1972 "P" series glow plug engine. In total just over 1,000 complete yellow jacket engines were produced by Bruce Underwood.

In 1994 Don Sohn of Oshkosh, Wisconsin, USA purchased the Yellow Jacket racing engine project which had been initiated back in the late 1950’s by Bruce Underwood. Don Sohn built about 70 engines from parts. Most of Bruce Underwood’s engine range ceased in 1975 with only the last model, the YJ61p remaining in limited production. Over a ten year period Don Sohn produced from remaining parts from the Yellow Jacket project about 70 engines, 20 of these were the last Yellow Jacket model the YJ61P with serial numbers from U-1031 to U-1051 - This engine is number U-1044 from the last 20 Yellow Jacket engines ever assembled from parts made by Bruce Underwood and also the last design and most evolved engine in the Yellow Jacket Range. Sent from my iPad large carb held by front clinch bolt - 17mm crankshaft 1.69 hp @ 16,500 rpm

Yellow Jacket 61P (1972 - 1975 & 1994 - 2004)

new

Cost £950

Yellow Jacket .61P glow plug tether car engine This engine is number U-1044 from the last 20 Yellow Jacket engines ever assembled from parts made by Bruce Underwood and also the last design and most evolved engine in the Yellow Jacket Range. Sent from my iPad large carb held by front clinch bolt - 17mm crankshaft 1.69 hp @ 16,500 rpm. All parts of the engine and the chrome plated flywheel are stamped with their own individual YJ part numbers. The U in the serial number stands for Underwood.

Capacity: 0.607 cu in
Bore: 1.015 in
Stroke: 0.750 in

UNKNOWN

Home made 10cc marine glow engine

Cost £22

These engines were made in Paraguay from 2015 to 2019 by the "V12 Factory", their main intended use was for 1/4 scale R/C cars, most engines sold were 83cc and 108cc V8’s or the 163cc V12 engine. Their website, V12-factory.com, although now closed down can still be viewed via the "way back machine".

"V12 Factory" - V8 DOHC
glow-plug engine

V8 DOHC glow-plug engine made by the "V12 Factory"
V8 Capacity: 83 cc or 108 cc
Power of 83 cc V8 engine is 5 bhp @ 9,000 rpm

Power of 108cc V8 engine is 6.6 bhp @ 9,000 rpm
V8 108cc Cost new: €4,080 (£3,377+VAT)
V8 108cc kit of parts: €2,388 (£1976+VAT)

V12 Capacity: 163 cc or 108cc
V12 108cc Bore: 24mm
V12 108cc Stoke: 30mm
V12 Power of 163cc v12 engine is 10 bhp @ 9,000 rpm

Pu timing belt is a 10mm wide T5 of correct length (10-T5-length)

Specifications of 108cc V8 engine

Power: 6.6 bhp @ 9,000 RPM
Type: 4-stroke
Bore: 24mm
stroke: 30mm
Cooling: water-cooled
Fuel: methanol glow fuel
Crankshaft: steel with triple ball bearings, double row on the output side.
Camshafts four: each with 5 ball bearings
Valve diameter 11mm
Valve stroke 2.5mm
Aluminium parts: high-strength 7075 alloy
Motor weight: 4.6kg

Russian 40 outboard

Cost £135

40 (6.5 cm3) Marine Outboard

Made in Belarus by Trusevich S.

HASTINGS TWIN 18.5 c.c. (2009)

Cost £220

One of a series of experimental twins made by Charles Hastings, Ryde, Isle of Wight, U.K. circa 2009. At least 8 experimental engines were made each slightly different (8th engine made November 2009)

Capacity: 18,70 c.c. (1,142 cu. in.)
Bore: 24 mm. (0,945 in.)
Stroke: 20.67 mm. (0,814 in.)
Type: Two stroke simultaneous firing flat twin
Ignition: Glow plug (O.S. No 8)
Induction: Disc reed valve
Carburettor: Super Tigre Mag
Performance: 6,300 RPM with a 15x6" propeller
Crankshaft: EN 24 two throw one piece crankshaft carried by three Swiss ball bearings
Connecting rods: Machined from H15 high tensile alloy, split big ends with bronze shell bearings
Piston / Liners: Machined alloy twin ring (from Enya 60) pistons / Cast iron liners
Crankcase, front and rear housings and cooling fins: HE30 alloy
Weight: 1 KG