reduction ratio smarts

ed flanagan

Member
Joined
Dec 6, 2005
RO Number
19708
Messages
33
i have a hurth 630 with a 1:57 ratio. current power is 230 (marine power 6.5 liter turbo).
the calculator at boat diesel indicates that when i repower with a 310 peninsular a 1:2 ratio is more efficient. i don't doubt it, but i don't understand the thoery...
anybody here care to comment?
thx
 
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