1bandit

I have one of the cherry picker type hoists you can use.

Joe

PURPLE HAZE

Joe Thanks I will call you if I still need it after the next test run. Thanks again Gene

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TEAM RECESS
Capt. Gene Kline

PURPLE HAZE

Ron, Tim and I did another test on the boat this morning. Here is what we found. With 150 gallons of fuel,2 person and no gear. WOT 5975 wow,engines trimed up, half trim on tabs, speed was 41.8 knots,no porpise. With the chart you sent me I had less then .09 slip.By the way my gear ratio is 2.0. With my new readings I feel that 1 degree pitch change will do it. What do you think? Gene

__________________
TEAM RECESS
Capt. Gene Kline

sealark

Gene, with the new figures your slippage is 17.9%. To get that from the Decimal in the calculator just move the decimal point over 2 spaces to the right. Adding an inch to the pitch would allow you to reduce rpm to maintain speed but would load the engine not dangerously but would load it more. Rather than chainging the pitch just increase the RPMs a little. What I do when I get underway with my trim is when I get up and on course I trim up until I start to cavitate ever so slightly and then trim down just enough to not cavitate. If you are trimmed down too far just watch your speodometer and trim up and the speed will start to clime until you start cavitating. That spot just befor cavitation is the most economical place to be. However when sea states change or swells are encountered the trim might have to be adjusted.