best prop for pantera 28 at cruise
hi all
im running a stock 30 bravo on a merc diesel @3800 rpm getting 52 mph the boat is 4900lbs so what i was thinking my max rpm would be the same as your cruise rpm what prop would you use for max speed at cruise 3800 cheers gerard |
have you tried a bigger prop let say a 32 pitch 4 blade and if you did what was the top rpm with that prop ?
if you were 200 or 300 rpm lower then your 3800rpm max you can lab a 32 and pick up the difrence in rpm and have a faster cruise speed mike |
gerard, we need to know what rpm max torque is at, and what is max rpm for the engine?
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Your propslip is about 26% which is way too high. You should be able to get it down to around 16%. I ran about 52mph at 4000rpms with a 26 Bravo prop. Your boat is also about 400# lighter than mine was.
Where is the X dim or propshaft height set at????? You may want to consider a 5 Blade Maximus or P5X prop. |
hi again thankyou all for your replys
the max torque is 526ft lbs @2400 and the max rpm is 4000 the x was 17.5 and i added a 1" spacer and it made no difference with the drive tucked under the boat im getting 3600rpm 49mph and when i trim it out i only gain 3mph the cabin is gutted so there is little weight up front i had a 28 b1 before the 30 and it was 50 mph @ 4000 |
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