OS Engine MAX 91SX-H Ring C-Spec Viper

Brand: OS Engines

Part Number: L-OS19070


SORRY, THIS ITEM IS DISCONTINUED AND NO LONGER AVAILABLE.


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Similar to the standard 91SX-H C-Spec but with the added advantage of the stunning new 'Viper' head. Not only does this cylinder head improve power, it also improves cooling and throttle response as well. In some way, this can be attributed to the twin glowplug system.

This has the added benefit of giving a little warning of plug failure in flight as one will still keep the engine going, there will just be a little loss of performance to give you the chance to land safely.

A great engine for F3C competition.
Specifications
Weight 534.3g 18.84 oz
Displacement 14.95cc 0.91cu in.
Bore 27.7mm 1.09in.
Stroke 24.8mm 0.976in
Power Output 3.1PS@15000 RPM
Practical RPM 2000-16000

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