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  #11  
Old 09-15-2018, 02:48 PM
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André André is offline
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Boat: Prostar 190 1994
Location: Near Sherbrooke,Québec,Canada
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Something's seems to be wrong in those numbers...A 13x13 prop turning 4950 revs would put you very close to 50 mph.I'm less familiar with that generation using the Ford 351 but what's your speed at 4950 rpm?
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  #12  
Old 09-15-2018, 08:10 PM
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jayR jayR is offline
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Boat: 1988 prostar 190
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It would be interesting to know gps speed at wot (you can get an app for your phone)... unless that engine was built, the rpm don't seem right. typically 4200-4400. Also, shouldn't the 4 blade be turning less rpm and the 13x11.5 be turning more?
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