db2
Veteran Member
I need to replace the props on my Californian 42LRC and I would like to correct what I think is an over prop situation in the process. When I bought the boat the starboard prop was damaged by electrolysis. The Electrogard system has now been bypassed and conventional zincs are in place.
The boat has fresh Perkins T6.354 engines. The Velvet Drive transmissions are 1:1. The shaft size is 1 3/8". The props are 4 blade 24D x 19P.
My Perkins workshop manual says that these engines should reach 2250 rpm. At full throttle I get about 1900 rpm. I don't think the turbos even kick in at this low of a rpm.
Can any members with similar set ups share their prop size with me? Are 4 blade and 3 blade props similar in performance when it comes to selecting the proper diameter and pitch? Which should I change, the diameter or the pitch? Any help will be appreciated.
take care all,
Dan
The boat has fresh Perkins T6.354 engines. The Velvet Drive transmissions are 1:1. The shaft size is 1 3/8". The props are 4 blade 24D x 19P.
My Perkins workshop manual says that these engines should reach 2250 rpm. At full throttle I get about 1900 rpm. I don't think the turbos even kick in at this low of a rpm.
Can any members with similar set ups share their prop size with me? Are 4 blade and 3 blade props similar in performance when it comes to selecting the proper diameter and pitch? Which should I change, the diameter or the pitch? Any help will be appreciated.
take care all,
Dan