Info Page Glow Engines A to K Glow Engines P to Z Spark Ignition Engines Diesel Engines Jet Engines Engine Spares Steam Engines | |
Laser Laser Engines were first produced in 1983 Following a UK government "Initiative grant" to ACG Ltd owned by Mr Reg Gross and based in Hemel Hempstead, UK, to produce the four stroke engines designed by Neil Tidey. In 1994 to cope with increased demand AGC Sales Ltd was formed to deal with engine marketing. Various engine capacities are available as single cylinder or V twin configurations,. Laser engines are now fully manufactured by CNC machinery from bar-stock (early examples used a cast front housing). The 2021 engine range consists of 11.5cc to 29.5cc single cylinder engines and V twins of 33cc to 64cc all still based on the original four stroke 61 design by Neil Tidey, Production is currently about 2,000 engines per year. It is of note all carburettors used were made by Irvine engines until they ceased production in 2006 and Laser had to make their own carburettors in-house. In 1992 the 62, 75, 90, 150v and 180v engines were discontinued and replaced by the Laser-70, 80, 100, 160v and 200v. | |
| Laser 70 or 90 FS RC (1985 to 1992) Cost £81 1.6hp / 1.8hp @ 9000rpm |
| Laser 90 FS RC (1985 to 1992) Cost £120 Capacity: 0.90 cu in (14.76 cc) |
| Laser 90 FS RC (1985 to 1992) Cost £127 Capacity: 0.90 cu in (14.76 cc) |
| LEO LEO was a budget model engine range produced in Taiwan, Republic of China. The LEO engine range had a marked similarity in design to those of O.S. and were produced between 2000 and 2009. Notably it was reported that LEO had strong links with Thunder Tiger via family relationships between their respective owners. The LEO engine range was distributed in the U.K. by Just Engines as economical sport engines. | |
| Leo power 40ep abc Cost £24 |
| Leo 40 RC (2000) Cost £10.33 Capacity: 6.57 cc (0.40 cu in) |
LOSI Losi engines are manufactured in Taiwan and distributed by Horizon Hobby, Inc. USA, their intended use was for R/C cars. | |
| Losi 350/LOSR2300 RC Marine (2009-2017) Cost £40 Capacity: 0.21cu in (3.5 cc) |
Mark | |
| Mark M61 ls abc Cost £60 |
Master Motors (Mactek Motopc) Master Motors was formed in 1988 making industrial engines for sale in Russia, they started making model engines in the early 90’s for Russian modellers and in 1992 they began selling in the UK via Cheshire model supplies who distributed the engines in the UK. Master engines are produced in a small 10 man worker owned factory in Semibratovo, Yaroslavl region near Moscow in Russia. Their engine capacity range is from 1.5 cc to 15 cc, most are glow plug engines with a few 2.5cc diesel models. | |
| Master Motors M61 SF LS (Side facing exhaust long stroke) 1990 on Cost: £48.93 Capacity: 9.94 cc (0.608 cu in) |
MAGNUM Magnum XL engines were produced in China and made in Sanye’s aerospace workshops as a state subsidised sideline and imported/repaired in the UK by Weston UK of Sittingbourne, Kent. | |
| Magnum XL .061a Cost £55 Capacity: 9.95cc |
McCoy Early McCoy engines were Designed by Dick McCoy and produced by the Duro-Matic Company in Hollywood, USA, later engines by their subsidiary Testor Corporation in Los Angeles, California, USA. | |
| McCoy 29 series 20 "bump lug" (1948) The original McCoy 29 rear rotor ‘Red Head bump lug" engine of .299 cu. in. displacement, was designed by Dick McCoy and manufactured by Duro-Matic Products, it was first marketed in 1947 as an ignition engine and was aimed at speed control-line and race cars. The McCoy 29 R series 20 glow engine was introduced a year or so later. |
| McCoy 29 Cost: £45 |
| CS replica of a 1953 McCoy 29 glow plug engine Cost £80 CS is located in Shanghai, China, and was established in 1978 as a manufacturer of competition engines, in later years they started producing limited runs of replica engines such as this McCoy 29. Capacity: 0.296 cu in (4.85 cc) |
| McCoy 35 Stunt ser 21 (1976) McCoy 35 Stunt ser 21 (1976) |
| McCoy 40 r/c ser 21 (1972) Cost $36 Capacity: 6.537 cc (0.399 cu in) |
| McCoy 36 Super Stunt (1955-1956)bump-less lug version Cost £41 One of the last true McCoy engines designed and introduced before the Testors April 1956 takeover. Lapped piston and liner |
| McCoy 60 series 20 Glow Ignition (1958) New! Capacity: 9.95 cc ( 0.607 cu in ) |
| "A" SERIES '20' McCoy 60 R/C (1958) Cost £130 Capacity: 9.95 cc (0.607 cu in) |
MD The MD 5 KOMETA glow plug engines were manufactured in a DOSAAF controlled facility located in Moscow, Russia between 1957 and 1989. The KOMETA MD5 was obviously a clone of the 1954 Italian Super Tigre G21/29 and was made without either permission or licence. | |
| MD-5 KOMETA (1956 to 1989) Russian made 0.29 Cost: £21 |
MDS (МДС on Russian market engines) MDS was formed in 1985 to produce model engines for Russian internal civilian use, export of engines commenced in 1996. The production of MDS engines was undertaken by a division of Savma (Saveiovskoe production association "PROGRESS”), located in Kimry which is 98 miles North of Moscow in Russia, their primary work was the manufacture of machine tools for Russian military aerospace facilities under the control of DOSAAF (a government organisation responsible for aircraft repair plants). As the Russian Cyrillic alphabet is different than ours having 33 letters, crankcase lettering on engines made for internal use are often misread as MAC when it is in fact МДС (this translates into English as MDS). | |
| MDS 3.5cc Russian Glow Marine MAC-3.5KP2YC (1990)
Cost £8
Capacity: 3.5cc Bore: 16.6mm Stroke: 16mm RPM: 28,000 |
| MDS 3.5cc Russian Glow Marine MAC-3.5KP2YC (1989)
Cost £29 Capacity: 3.5cc Bore: 16.6mm Stroke: 16mm RPM: 28,000 Serial number 09 89 1928 |
| MDS 3.5 cc Serial number 255 30154 Capacity: 3.5cc Bore: 16.6mm Stroke: 16mm RPM: 28,000 |
| MDS 25 Cost £17.50 |
| MDS 6.5cc Marine Cost £56 This is a very limited production 6.5cc marine engine made for the use of the Russian/Ukrainian national FSR boating team in the 1980s. It was effectively a Soviet take of the OPS 40 engine of the period, it was rendered obsolete when the FSR 40 capacity class became a FSR 45 capacity class. |
| MDS 65ky (6.5 cc) Cost £18 ABC |
| MDS 40 New |
| MDS 40 (1987) Cost £44 Capacity: 0.604 cu in (9.9 cc) October 1997 - black head, late engines have silver highlights on fins by plug and silver turned ting around head. MDS 40 and made in Russia on lugs (Russian MAC 6.5 replaced with English MDS 40. Imported by robbe, ESTES and Ripmax. |
| MDS 40 FS (1997) Cost £21 Capacity: 0.604 cu in (9.9 cc) October 1997 - black head, late engines have silver highlights on fins by plug and silver turned ting around head. MDS 40 and made in Russia on lugs (Russian MAC 6.5 replaced with English MDS 40. Imported by robbe, ESTES and Ripmax. |
| MDS 40 FS (1997) Cost £44 Capacity: 0.604 cu in (9.9 cc) October 1997 - black head, late engines have silver highlights on fins by plug and silver turned ting around head. MDS 40 and made in Russia on lugs (Russian MAC 6.5 replaced with English MDS 40. Imported by robbe, ESTES and Ripmax. |
Mac 10 kpy (1987) Silver head gold prop driver front induction rear exhaust. | |
| MAC 10 - MDS-10KR2U-C (KP2YC)Marine (1987 - 1990) Cost £40 Serial number: first two numbers are month, second two numbers are year. Capacity: 10cc |
| MDS 61 10KRU2U-S (KP2YC 1) Cost £51.00 New Serial number: first two numbers are month, second two numbers are year. Capacity: 10cc |
| MAC 10ky (1992) Cost £26.50 Capacity: 10cc Serial number 12 92 3107 3107'th engine made in December 1992 Piston and Cylinder: ABC |
| MAC 10ky (1992) Cost £25 Capacity: 10cc Piston and Cylinder: ABC |
| MDS 10 (1992) Cost £16.69 Capacity: 10cc Cast circle 61, ser 11-92-2663 (2663th engine made in November 1992) |
| MDS 10 (1992) Cost £18 Capacity: 10cc The MDS gold head engine versions were made for distribution in Germany. Orange head and prop driver, cast circle 61, ser 11-92-2756 (2756th engine made in November 1992) |
| MDS 61 (1992) Cost £25 Capacity: 10cc The MDS gold head engine versions were made for distribution in Germany. Orange head and prop driver, cast circle 61, eg 12-92-2882 (2882th engine made in December 1992) |
| MDS 61 (1992) Cost £15 Capacity: 10cc The MDS gold head engine versions were made for distribution in Germany. Orange head and prop driver, cast circle 61, SER 04-92-2895 (2895th engine made in April 1992)
|
MDS 61 FS (1997) Front induction side exhaust October 1997 - black head, late engines have silver highlights on fins by plug and silver turned ting around head. MDS 61 and made in Russia on lugs (Russian MAC 10 replaced with English MDS 61. Imported by robbe, ESTES and Ripmax. | |
| MDS 61 FR (1997) Front induction Rear exhaust October 1997 - black head, late engines have silver highlights on fins by plug and silver turned ting around head. MDS 61 and made in Russia on lugs (Russian MAC 10 replaced with English MDS 61. Imported by robbe, ESTES and Ripmax. |
| MDS 61
COST 30 Serial number 104 30339 (30339'th engine made in January 2004) Capacity: 0.607 cu in (9.95 cc) |
| MDS 148 Marine (2002) Cost £65 Capacity: 1.48 cu in (25cc) |
MECOA MECOA (Model Engine Corporation Of America) was established by the American company RJL Industries to facilitate the online sale of a wide range of model engines and parts from various engine brands they had acquired over several decades. | |
| MECOA WILDCAT EP .15 RC Cost: £50 |
Merco The first production MERCO (Model Engine Research Co) engines, the 29 and 35 were made in 1959, designed by Ron Checksfield and produced by the Model Engine Research Co. Ltd., from which the band name MERCO is derived. In 1961 just as the prototype MERCO 49 had been completed the company was sold to D.J. Allen Engineering Limited (AM engine manufactures) based in Edmonton, London, UK. The MERCO 49 went into production in 1962 with the 61 entering production in 1964. It must be noted that the Merco 29, 35, 49 and 61 were all designed and developed by Ron Checksfield who had been a joint founder of Model Engine Research Co. Ltd and had become an employee of D.J. Allen Engineering following the change of ownership. In the late 1970’s D.J. Allen Engineering Limited engine interests were sold to an engineering company called Ferraris. A final change of own a ship occurred in 1983 when Forest sold his AM and Merco ingests to one of their employees, Reg Hills who produced the range under the name of Forest Engineering. It was Reg Hills who to a limited degree tested ABC piston/cylinder technology, the AM diesels were also kept in production. Ron Hills was only ever able to break even financially so sold the engine business to Premier, they traded as Premier Engines with production taking place at Southminster in Essex. Premier introduced the Merco 30 and 40 with black crankcases as well as ABN piston/liner technology, unfortunately it was too little too late. | |
Bill Morley the Manager of HJN's shop in Holloway Road, was inspired by seeing the performance of an American Veco 35 in 1957, there was no British made engine which could perform the same! Due to strictly enforced currency restrictions it was impractical if not imposable to import engines from the USA - The solution? - Design and Produce something just as good or even better! Unfortunately Bill Morley had little knowledge of engineering let alone two stroke engine design. Enter Ron Checkfield, Bill had had dealings with Ron who tuned team race engines, and they had become quite good friends. In mid 1958 Bill approached Ron and put forward a proposition to design a new engine from scratch - The Merco. Within a surprisingly short time three prototypes of the new large R/C engine were created, again with a little help from Dennis Allen who made the three prototype crankshafts. | |
| Merco 29 Marine Cost £31 |
| Merco 35 Cost £15 |
| Merco 35 Black Streak Marine 1972 Cost £20 Capacity: 5.762 cc (0.3516 cu in) |
| Merco 35 Marine Cost £7 |
| Merco 49 Black Streak Marine twin plug (1973) Cost £33 Capacity: 0.4996 cu in (8.187 cc) |
Merco 61 MkI - 1964 - simple air bleed Ali carb with exhaust chopper - single plug head - twin piston rings - 1/8" Whitworth head-screws - 0.88 bhp @ 11,500 rpm | |
| Merco 61 MkI (1964) New! |
| Merco 61 RC Mk2 (1965) Cost: £30 |
| Merco 61 MK3 Marine (1968) Cost £26.00 Fits Merco 61 Mk1 10 cc (1964) |
| Merco 61 Mk3 Black Streak Marine twin plug (1970) Cost £36 |
| Merco 61 Mk3 Black Streak Aerp twin plug (1970) Cost £25
|
| Merco 61 MK4 (1973 to early 1990's) Cost £22 |
| Merco 61 MK4 (1973 to early 1990's) Cost £20 |
| Merco 61 Mk4 RC (1973 to early 1990's) New |
| Merco 61 RC Mk 4 (1973 to early 1990's) Cost: £30 |
| Merco 61 mk 4 marine Cost £23 |
| Meteor The Meteor 60 was originally made by Jim Herbert but was taken over in late 1973 by Wisemore Engineering Company Limited based in Erdington, Birmingham, UK. In 1976 they introduced the Meteor 40 engine in to the range, a ring-less ABC Schnuerle scavenged design. | |
| Meteor m40 R/C Marine (1976) Capacity: 0.3972 ( 6.51 cc ) |
 | Meteor M40 R/C (1976) Cost £27.78 Capacity: 0.3972 ( 6.51 cc ) |
 | Meteor 60 Marine (1976) Cost £30 Capacity: 9.950cc |
 | Meteor 60 Marine Cost £50 Capacity: 9.950cc |
 | Meteor 60 Marine Capacity: 9.950cc |
 | Meteor 60 Cost £25 Capacity: 9.950cc |
| Meteor 60 Cost £25 Capacity: 9.950cc
|
| METEOR 60 ABC Cost £65 Capacity: 9.950cc |
MHZ MHZ K series engines were designed by the Russian engine designer Gennadiy Kalistratov (who passed away in 2009) and produced in Russia - Some engines were later produced by MHZ in Germany under a licence agreement. | |
| MHZ K21 Marine Cost: £85 Capacity: 0.21 cu in (3.44 cc) |
Miles Basil Miles, the designer of the E.D. Racer, built a limited range of diesel and glow plug engines in the early 1970's. | |
| Miles 10cc (1970's) This Miles cross-flow scavenged 10cc glow-plug marine engine was made in the early 1970’s |
MOKI MOKI (Model Engine Institute) engines were made by Moki-Modell in Budapest, Hungary. They were formed by the Hungarian ministry of defence to make engines for military and training purposes in 1957. MOKI engines only became available internationally in 1989 following political change in Hungry and production ceased in 2011. | |
| MOKI M 90 FSR 15cc ABC-Ring Engine 250 S14 RC engines made between 1988 and 1989, from 1989 to 2011 sold as the M-90 RC Marine |
| MOKI 135 glow (2000 - 2011) Cost £66 Capacity: 22.5cc |
| MOKI 180 (2003 - 2011) Cost £86 Capacity: 29.8cc POWER 3.9 BHP |
| MOKI 180 (2003 - 2011) Capacity: 29.8cc |
| MOKI 180 (2003 - 2011)
Cost £84.50 Capacity: 29.8cc POWER 3.9 BHP |
| MOKI 210 (1994 - 20011) Cost £100 Capacity: 34.6cc |
| MOKI 210 (1994 - 20011) Cost £83 Capacity: 34.6cc |
| Moki M9 M-360 Twin (1989 - 2011) Capacity: 59.6cc |
| Moki 25cc M6 RC (1971) Cost £34.00 Capacity: 25cc |
MUTUNUC Mutunuc engines were made by the Mutual Unity Mutunuc ENT. CO. LTD. Taiwan R.O.C. They produced engines in these four capacities: 40, 61,65 and 80 cu in. | |
 | MUTUNUC MILLENNIUM 61 ABC PRO
Capacity 9.97CC
|
MVVS MVVS (Modelarske Vyrobni Vyvojore Stredisko) engines were designed and produced initially in 1952 at the state sponsored Model Development Centre located at Brno in Czechoslovakia. Until 1954 engines were only supplied to Czechoslovakian modellers who showed potential in international competitions, after this they were available throughout Czechoslovakia in limited numbers. This changed in 1958 when small scale mass production was started, eventually engines became commercially available in the western world. In 1992 MVVS was privatised and subsequently availability increased world wide. | |
| MVVS 3032 3.5cc GFR ABC Cost £42 New Displacement: 3.48cc |
| MVVS 3.5cc (1991) Marine version ser C2 Cost £45 |
| MVVS 6.5 GFS/R 40 (1996) Cost £20 Porting: Schnerle |
| MVVS 40 stunt Cost £12 |
| MVVS 40 GRRT ABC (1988) Cost £90 Capacity: 6.54 cc (3.99 cu in) |
| MVVS 45 GRRT Marine (1989) Cost £95 New Marine version of the 1989 MVVS .40 GRRT Pylon Racing Engine |
| MVVS 8cc Cost £34.50 |
| MVVS 144 Twin Cost £165 Cylinders: 2 |
NGH NGH engines are produced by Changsha Guanghua Aviation Technology Co.,Ltd. located in the Technological Development Zone, Changsha City, Hunan Province, China. The company was Founded in September 2010 and specialises on the design and production of model aircraft piston engines and UAV piston engines. | |
| NGH GT9 9cc gas/petrol Cost: £32 |
Nordec North Downs Engineering based in Whyteleafe, UK, only ever made one engine, the Nordec 60, but there are effectively four different engines. The MkI of 1948 and the MkII of 1949, either mark could be supplied for either spark ignition or glow. Nordec are best known in the late 1940's as makers of Marshall-Nordec superchargers, these were common but expensive after market add-ons for sports cars like MG-TCs and Allards. Marshall-Nordec superchargers had a boost pressure of 6-8 psi which normally gave an impressive 80% power increase. Nordec engines tended to follow their roots - most found there way into tethered racing cars, this has resulted in many surfacing with the prop driver missing, probably discarded 75 years ago when installed in a car. | |
| Nordec RG10 Mk 1 (August 1948) Cost: £160 Capacity: 9.95 cc Cost £12 in 1948 (about £545 equivalent in 2025) |
Norvel | |
| Norvel 40 Cost £24 |
Nova 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 racing engines in the world. 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. The main emphasis was on the production of car engines but there have been exceptions, until November 2019 the Novarossi REX engine series were produced for aircraft and helicopters, Top engines are produced for marine use. Cesare Rossi unfortunately passed away in 2015. | |
| Novarossi C20 ABC Aero (circa 2000) Cost £36 The Novarossi C20 was introduced circa 2000, it was one of Novarossi’s earliest aero engines primarily intended to test the model aero engine market, as since its formation in 1984 by Cesare Rossi, the company had focused on model car engines. A year or two later Novarossi decided to fully embrace the aero (Rex), and marine (Top), markets and the engine slightly modified was re-marketed as the Novarossi Rex 09.20C .21, notably at this time it was the least expensive Novarossi .21 capacity engine with some others costing approximately twice as much. |
| NovaRossi REX R61F Speed Cost £190 Displacement: 9.98cc |
| NovaRossi 10cc SS 8 Port C60H Cost £83 New Displacement: 9,98 cc |
Norvel / NV Norvel / NV engines are manufactured by Northern Velocity Ltd in St. Petersburg, Russia. Originally marketed as Norvel and later just as NV | |
| Norvel AME 0.049 (1998) Cost £35 Capacity: 0.049 cu in (0.8 cc) Serial number: 7010035 |
| Norvel Big Mig AME 0.61 (1998) Cost £38 Capacity: 0.061 cu in (1.0 cc)
|
OK | |
| OK Cub .049 Cost: £28 |
OPS O.P.S. standards for " Officine Picco e Saoener" which translates to "The workshops of Picco and Saoener", it was created in 1968 in Monza, Italy. The first engine produced, the OPS 60 speed, soon replaced the Rossi 60 speed as the racing engine of choice on water, land and air. Around 1980 Gualtiero Picco left OPS and formed Picco Micromotori which still produces engines primarily for cars. | |
| OPS Speed 2.5 SLA STD (1982) Cost £85.00 Uses 3.5 crankcase back-plate and bearings, also needle valve and Venturi and prop driver and collet. Non piped versions like the std 0.65 BHP @23,000 RPM - Piped VAE versions 1.35 bhp @ 33,000 RPM Capacity: 2.474 cc (0.151 cu in) |
| OPS .15 OP81562S Cost £21 |
| OPS 18 RCB Cost £38 |
 | OPS Speed 20 SLA RCB (1976)
Capacity: 3.463 cc (0.2113 cu in) |
 | OPS 20 Speed SPP RCB (1976) Capacity: 3.463 cc (0.2113 cu in) |
 | OPS 21 Marine & RM Gearbox (1976) Cost £50 Capacity: 3.463 cc (0.2113 cu in) |
 | OPS 29 SPEED SPP RCB ser 74 (1974) |
 | OPS 29 Speed VAA ser 74 (1974) |
 | OPS Speed 40 SLP RCB (1974) Cost £70.00 Capacity: 0.398 cu in (6.522 cc) |
 | OPS Speed 40 SPP RCB (1974) Fitted with later water-cooled cylinder head. 2.2 PS @ 26,500 Capacity: 0.398 cu in (6.522 cc) |
 | OPS Speed 40 SLP RCB (1974) Capacity: 0.398 cu in (6.522 cc) |
 | OPS Speed 40 SLP (1974) Cost £61 Capacity: 0.398 cu in (6.522 cc) Fitted with a HP AMC carburettor. Irvine sold these in 1974 for £35.20 |
 | OPS Speed 40 SLP (1974) Cost £16 Capacity: 0.398 cu in (6.522 cc) |
 | OPS Speed 40 SPP RCB (1974) Cost: £31 |
 | OPS Speed 40 SPP RCB (1974) Capacity: 0.398 cu in (6.522 cc) |
 | OPS Speed 40 SPP RCB (1974) New Cost £100 Capacity: 0.398 cu in (6.522 cc) |
 | OPS Speed 40 SPP (1974) Cost £109 Capacity: 0.398 cu in (6.522 cc) Irvine sold these in 1974 for £36.80 |
 | OPS 40 Speed SLA Cost £29 Capacity: 0.398 cu in (6.522 cc) Irvine sold these in 1974 for £32 |
 | OPS 40 Speed SLA Cost £27 Capacity: 0.398 cu in (6.522 cc) Irvine sold these in 1974 for £32 |
| OPS 40 - At this point in time heads became two part, front and rear lugs were cast joined together and cooling fins machined, marine engines received a casting for cooling the head (before used an OPS branded Kool clamp, steel flywheels were replaced with aluminium ones) | |
 | OPS Speed 40 SPP RCB Capacity: 0.398 cu in (6.522 cc) |
 | OPS Speed 40 SPP RCB Cost £83.50 Capacity: 0.398 cu in (6.522 cc) |
 | OPS Speed 40 SPP RCB Cost £67 Capacity: 0.398 cu in (6.522 cc) |
 | OPS Speed 40 SPP RCB Capacity: 0.398 cu in (6.522 cc) |
 | OPS Speed 45 SPP RIRE/RIFE (introduced in 1982) Cost: £50 Displacement: 7.5cc/.45 cu in |
 | OPS 60 Speed ser 68 RCB (1968) Cost £40 Ringed piston |
After 1972 abc ONLY and cotter pins used to retain carbs - also read anodised cylinder heads first used WITH 4 BOLT HEADS | |
 | OPS 60 SPEED MARINE 1970 Cost: £137 |
 | Ops Ursus 60 (Bear) ser 72 RCB (1972-1974) Cost £23.60 Capacity: 9.829 cc (0.559 cu in) When first sold in 1973 and then 1974 by Irvine Engines for £38.40 |
 | OPS SPEED 60 SPP ser 70 (1970) The 1970 60 speed engines retained steel flywheels and the down swept carb with Zimmerman disk induction. The head was anodised red and the retaining bolts were reduced from eight to six. Ringed pisto |
 | OPS 60 Speed RCB 'Red' ser 73 ABC Cost £157 New OPS engines were air-cooled at this time for marine use, OPS branded Octora kool-clamps could be purchased if water cooling was required on the 40 and 60 engines. Capacity: 9.870 cc (0.6023 cu in) |
 | OPS SPEED 60 SPP RCB ser 70 (1970) Cost £125 The 1970 60 speed engines retained steel flywheels and the down swept carb with Zimmerman disk induction. The head was anodised red and the retaining bolts were reduced from eight to six. Capacity: 9.870 cc (0.6023 cu in) |
 | OPS Speed 60 SPP ser 76 RCB Cost £65 The ser 76 engine changed to a standard disk induction and was ABC as standard. marine engines were fitted with brass flywheels and could be supplied with a two piece cast water-cooled head or an optional OPS branded "kool-clamp". (NOW REARRANGED - NEEDLE BIG END) Capacity: 9.870 cc (0.6023 cu in) |
 | Ops Ursus 60 (Bear) ser 74 SE (1974) Cost £110 Capacity: 9.870 cc (0.6023 cu in) |
 | Ops Ursus (Bear) 60 SE RCB Cost: £37 Capacity: 9.870 cc (0.6023 cu in) |
 | OPS Speed 60 SPP ser 76 Marine Cost: £40 The ser 76 engine changed to a standard disk induction and was ABC as standard. marine engines were fitted with brass flywheels and could be supplied with a two piece cast water-cooled head or an optional OPS branded "kool-clamp". Capacity: 9.870 cc (0.6023 cu in) |
 | OPS Speed 60 ser 76 SPP RCB Cost £60 The ser 76 engine changed to a standard disk induction and was ABC as standard. marine engines were fitted with brass flywheels and could be supplied with a two piece cast water-cooled head or an optional OPS branded "kool-clamp". Capacity: 9.870 cc (0.6023 cu in) |
 | OPS Speed 60 SPP RCB Cost £83.00 Capacity: 9.870 cc (0.6023 cu in) |
 | OPS SPEED 60 SPP (1990) Cost £126 Capacity: 9.870 cc (0.6023 cu in) |
 | OPS Speed 60 FIRE Cost £85 Capacity: 9.870 cc (0.6023 cu in) |
 | OPS 60 super 60 SPA RCA (1984) cost £45 Separate combustion chamber insert |
 | OPS 65 Speed RCB 5 port (1979) Capacity: 0.6509 cu in (10.666 cc) |
 | OPS 67 Speed RCB 5 port Cost £88 |
 | OPS 67 Speed RCB 5 port Cost £90 Capacity: 0.667 cu in (10.93cc) |
 | OPS SPEED SUPER 80 SPP 5 port RIRE (1989 on) Capacity: 0.80 cu in (13.12 cc) |
 | OPS 90 Speed Series 2 (1984) Cost: £130 Rear bearing worn Capacity: 0.915 cu in (14.995 cc) |
 | OPS 90 Speed Series 2 (1984) Cost: £60 Capacity: 0.915 cu in (14.995 cc) |
 | OPS 90 Speed Series 3 rear disk induction on bearings and a needle bearing con-rod Cost £183 Capacity: 0.915 cu in (14.995 cc) |
 | OPS 90 Speed Series 3 Engine Set up Cost £195 never run Capacity: 0.915 cu in (14.995 cc) |
 | OPS 90 Speed Series 3 Cost £90 Capacity: 0.915 cu in (14.995 cc) |
 | OPS 90 Speed Series 4 (2007) Cost £197 (new £385 ) as new Capacity: 0.915 cu in (14.995 cc) |
 | OPS 90 Speed Series 4 (2007) Displacement = 14.87cc (.90) CON-ROD/BEARING - PISTON - HEAD - DAMAGE Cost £65 |
OS OS introduced its first model engine in 1936 making it the oldest model engine manufacturer in the world to still be producing engines today. OS engines are made by Ogawa Model Manufacturing Co. Ltd., located in Osaka, Japan. Engine history | |
 | OS 10 RC MARINE Cost: £17 Capacity: 1.749 cc (0.1067 cu in) |
 | OS Max III 35 R/C (1959) Cost: £25 Capacity: 5.67 cc (0.346 cu in) |
 | O.S. Max S 35 RC (1963) Cost: £30 Capacity: 5.83 cc (0.356 cu in) |
 | OS Max H 40 RC (1973) Cost: £32 Capacity: 6.495 cc (0.3964 cu in) |
 | OS Max 40 SR ringed (mid 1974) This was the first rear disc induction 40 engine by OS, it is identified by the long and small diameter front housing on very early engines and the flange mounted carb on all SR's. This is just a SR, the RSR name was only used on later versions after the front induction FSR engine was introduced to stop any confusion. Capacity: 6.495 cc (0.3964 cu in) |
 | OS Max 40 SR (1974) The front end may be from the later abc engine. Cost £36.50 Capacity: 6.495 cc (0.3964 cu in) |
 | OS Max 40 RSR-M (1976)
Capacity: 6.495 cc (0.3964 cu in) |
 | OS Max 40 RSR-M (1976) Cost £60 New Capacity: 6.495 cc (0.3964 cu in) |
 | O.S. MAX 40 FSR (1975) Cost £12 Capacity: 6.495 cc (0.3964 cu in) |
 | O.S. MAX 40 FSR (1975) Cost £10 Capacity: 6.495 cc (0.3964 cu in) |
 | O.S. MAX 40 FSR Cost £56 Capacity: 6.495 cc (0.3964 cu in) |
 | O.S. MAX 40 FSR Cost £20 Capacity: 6.495 cc (0.3964 cu in) |
 | OS Max 40 VR-M ABC (1981) Cost £125 New Capacity: 0.396 in |
 | OS FS-40M (late 1981 on) Cost £68 Capacity: 6.495cc (0.3964 cu in) Power: 0.455bhp @ 11,200 rpm
|
 | O.S. Max 45 RSR-M ringed (1977-1981) Cost £84 New Capacity: 7.465 cc (0.4555 cu in) |
| 1981 ABC introduced (in fact AB-N/Aluminium Oxide), carburetor now held by draw bolt. | |
 | OS Max 45 RSR-M ABC (1981 on) Cost £86 New Capacity: 7.465 cc (0.4555 cu in) |
 | OS MAX 50 STUNT (1963 - 1968) Cost £25 Capacity: 8.30 cc |
 | OS MAX 50 (1963 - 1968) Cost £24 Capacity: 8.30 cc |
 | OS MAX 50 Marine (1965 - 1968) Cost £75 New Capacity: 8.30 cc |
 | OS MAX 50 Marine (1965 - 1968) Cost £25 New Capacity: 8.30 cc |
 | OS MAX 50 Marine (1965 - 1968) Cost: £49 Capacity: 8.30 cc |
 | OS MAX 50 Marine (1965 - 1968) Cost £26 Capacity: 8.30 cc |
 | OS Max 58 Marine (1965) Cost £11 Capacity: 9.5cc Steel Liner and Twin Piston Rings |
 | OS MAX-H 60 (1967) Cost: £75 Capacity: 9.95cc |
 | OS 60 FSR (1974-1976) Capacity: 9.953 mm (0.6073 cu in) |
 | OS 60 FSR (1974-1976) Cost £52 Capacity: 9.953 mm (0.6073 cu in) |
 | OS 60 FSR (1980) Cost: £35 |
 | OS 61 FSR (1980) Capacity: 9.953 mm (0.6073 cu in) |
 | OS FS 60 Mk3 open rocker (final model 1983) Cost £225 Capacity: 9.953 cc (0.6073 cu in) |
 | OS FS-60 Mk3 open rocker (final model 1983) Cost £183 Capacity: 9.953 cc (0.6073 cu in) OS FS60 Mk1 of 1976 billet head and carb with aluminium machined rocker arms |
 | OS MAX 61VR (1979) Cost £82 New Capacity: 0.607 cu in |
 | OS Max 65 RSR-M (1977) Cost £54 Capacity: 10.27 cc (0.627 cu in) |
 | OS MAX 77 VR-M ABC (1986) Capacity: 12.742 cc (0.7776 cu in) |
 | OS H80 RC (1967 updated 1972)new Introduced in 1967 and internally revised in 1972, the induction drum increasing in bore from 12.5mm to 14mm and receiving an additional crank-pin hole to allow reverse rotation if required. Other internal changes include the con-rod losing it’s needle bearing big-end in favour of a conventional bronze bearing and the 67 series engine’s twin piston rings reduced to a single one on the series 72. |
 | OS H80 RC (1967 updated 1972)Cost £40 Introduced in 1967 and internally revised in 1972, the induction drum increasing in bore from 12.5mm to 14mm and receiving an additional crank-pin hole to allow reverse rotation if required. Other internal changes include the con-rod losing it’s needle bearing big-end in favour of a conventional bronze bearing and the 67 series engine’s twin piston rings reduced to a single one on the series 72. |
 | OS H80 RC Marine Cost £40 Introduced in 1967 and internally revised in 1972, the induction drum increasing in bore from 12.5mm to 14mm and receiving an additional crank-pin hole to allow reverse rotation if required. Other internal changes include the con-rod losing it’s needle bearing big-end in favour of a conventional bronze bearing and the 67 series engine’s twin piston rings reduced to a single one on the series 72. |
.jpg) | OS MAX 90 FSR (1979) Ringed 1978 - ABC 1979 Cost £57 Capacity: 14.886 cc (0.908 cu in) |
 | O.S. 90 RSR-Marine (1979) Cost: £110 Capacity: 14.886 cc (0.9084 cu in) |
 | O.S. 90 RSR-Marine (1979) Cost: £50 Capacity: 14.886 cc (0.9084 cu in) |
 | OS 91 VR-DF small head (1989 to 2012) |
 | OS 91 VR-DF small head (1989 to 2012)Cost £160 new Capacity: 14.76 cc (0.9 cu in)
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 | OS Max 160 FX (2000) Bore: 1.32 in (33.6 mm) |
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