COMBO OS SPEED B2102 3,5cc LP + EFRA2089 [OS-1A301 ]
Originally spotted on the Tokyo Hobby Show was this brand new development from O.S. Engines under their high performance ‘O.S. Speed’ brand.
The new B2102 engine boasts a very striking ‘low profile’ cooling head – going against the grain of convention which traditionally feature much taller alu cooling heads to take advantage of air flow to regulate the engine temperature.
The engine also has a new carburettor which improves fuel mileage: “Ten-minute driving per fuel tank is not privilege of throttle sensitive top drivers any longer but for everybody now.”
“The new low-profile cooling head makes buggy’s centre of gravity much lower (-17 mm), which improves car handling drastically without sacrificing cooling performance. Car handling at corner is improved a lot, new experience.”
The engine is 5 grams lighter than the B2101 and 7g lighter than the XZ-B Spec II.
|NEW MODEL||square stroke|
|intended use||1/8 off road buggy|
|JAN code||4531028 02406 9|
|displacement||3.46cc (0.211 cu. inch)|
|bore||16.40 mm (0.646 inch)|
|stroke||16.40 mm (0.646 inch)|
|practical rpm range||4,000 – 42,000 rpm|
|Max power||2.65 PS/34,000 rpm 2.61 HP/34,000 rpm|
|weight||347 g (12.25 oz)|
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