Propulsion System  Mo’Chuisle is powered by a six cylinder Isuzu 6BG1 diesel engine. This is a 114 continuous hp engine @ 2500 rpm. The normal cruising rpm is around 1650 rpm which utilizes 80 continuous hp for 7.3 knts. The main engine is coupled with a Borg Warner Velvet Drive Transmission, Model 10-18 with a 2.1 to 1 ratio . Mo’Chuisle has a 1 3/4” SS shaft approximately 10ft long, with a 24 x 17 left hand bronze propeller. A PYI drip-less shaft seal is coupled to the Fiberglass shaft tube, which has two sleeve style water cooled cutless bearings inside. There is a shaft brush connected to a zinc on the hull exterior to aid in reducing electrical interference and provide added electrolysis protection to the shaft and propeller. There is a hydraulic disc-brake mounted between the couplings, that is released when the engine starts, and engages when the engine is stopped.
Shaft Hydraulic Disc Brake Shaft, Seal,Shaft Brush and Aft Bilge Transmission Manual Work Shop Manual Engine Power Curve Aft Bilge Area