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O.S. Engines 21XR-B Ver.3 3.5cc nitro engine

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Actualité du 04/08/2020

O.S. Engines 21XR-B Ver.3 3.5cc nitro engine

O.S. Engines have announced the soon release of their new 21XR-B Ver.3 3.5cc nitro engine. The sports engine incorporates the DNA of the ultra-successful O.S.Speed line, transplanted into a more budget-friendly package for the average racer. A newly designed crankshaft will improve engine response thanks to a different shape and timing while a more lightweight piston further assists with a crisp engine response on throttle input. The OSSpeed-style conrod will offer exceptional durability while a redesigned combustion camber insert optimises power supply especially in the low to medium RPM range while offering stable engine performance at high speeds. Other features include a redesigned cooling head, the engine uses the double adjustment 21 J3-1 carburettor and it comes with 6mm off-road and 7mm GT specific venturi inserts. The engine is available separately and also as buggy combo set including an EFRA2089 exhaust pipe and MB01-75 manifold or as GT combo set including an EFRA2042 exhaust and MB01-70 manifold.

Specifications:
– Displacement: 3.49cc
– Bore: 16.27mm
– Stroke: 16.8mm
– Practical RPM: 4,000-40,000
– Maximum output: 2.45ps/33,000RPM
– Weight 381g
– Standard equipment: T-P3 glow plug, orange 6mm venturi, yellow 7mm venturi, exhaust seal

Source: O.S. Engines [os-engines.co.jp]

The post O.S. Engines 21XR-B Ver.3 3.5cc nitro engine appeared first on Red RC.

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Source : Red RC - RC Car News Nos autres news du 04/08/2020
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