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Joe
 
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Default 3 or 4 blade props?

You forgot to answer my question-

Here's real world scenario for you- On my boat (21.5' CC 200hp), at 3000rpm
the boat will ride with a bow high attitude with stern dive. As I actuate
the trim tabs the stern rises, the bow lowers and the boat planes. Once
planed the rpm's will immediately climb (without touching the throttle) and
my speed increases. I then can reduce throttle back to 3000rpm and continue
along on a plane.


Now, tell me, do you think my boat is more, or less efficient at 3000rpm's
with my tabs down or tabs up?



 
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