Offshoreonly.com - Engine gurus!!!!!!!!!!

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Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Q & A (https://www.offshoreonly.com/forums/general-q-20/)

- - Engine gurus!!!!!!!!!! (https://www.offshoreonly.com/forums/general-q/84778-engine-gurus.html)

mikes280

09-19-2004 08:48 PM

Re: Engine gurus!!!!!!!!!!

Quote:

Originally Posted by jryan26

Your right about that. Is the ratio determined by the lower, or do you have to do both uppers and lowers?

depends if it is xrs it is in the lower f it is standerd bravo 1 it is in the upper

JIMG	09-20-2004 12:15 PM

Re: Engine gurus!!!!!!!!!!

back to the original boat in question the theoretical speed for the equipment listed is 78.7 mph. the drive must be 1.36 because with the rest of the equation in place it would give you about 8% slip which should be about right for that boat. you should tear them down, count the gear teeth. probably change gears for best performance.

jryan26

09-20-2004 08:10 PM

Re: Engine gurus!!!!!!!!!!

JIMG
Its pretty amazing to me how close the calculator is.

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