Alaskahick
Member
Got a bit of a problem and need some information to help sort this out. Currently Spirit is sitting in Yakutat, AK due to weather in the Gulf of Alaska. The last three weeks I spent cruising her up from Everett, WA. During my trip from Elfin Cove to Yakutat I hit a piece of wood that set the port propeller to vibrating. I should have put her on the grid and pulled the prop prior to leaving but I had a serious case of get-home-ittis. My boat is a 1979 34 LRC with twin Perkins T6.354 engines and Borg Warner Velvet Drives (I assume 72C). Currently she has 3 blade 20" dia props with a 20 pitch. If she has a 2:1 gear ratio, boatdiesel is recommending 23" diameter 20 pitch prop.
Does anyone know what the standard gear ration was installed into our boats and what the standard propellor shaft diameter is?
Does anyone know what the standard gear ration was installed into our boats and what the standard propellor shaft diameter is?