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Discussion Starter · #1 ·
messing with propping alil still dialing things in. wish I had tnt to see the what ifs lol this is what ive gotten on the second trim hole

this is what ive been getting with propping

stock 10.3x12 aluminum
rpm 5800
mph 28
poor grip of water planning, turns, and reverse

same prop with a cup
rpm 5450
mph 26-27

brp 4 bade ss 10x11
rpm 5600-5750
mph 26-28
no more steering torque. great response in reverse


all test have been same weight in boat as I go when I fish
 

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Aside from the torque tab on the motor you can eliminate steering torque by finding the right trim for the motor. I ran my 4 blade at the same trim setting as my 3 blade and it had a significant pull. Dropped the trim pin down a hole and the steering torque went away.
 

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Discussion Starter · #5 ·
Bobs action tnt on its way

the trim and tilt worked out great. its supper fast never seen a tnt work so fast
boat has near 0 cavitation due to 5.5'' setback
got more rpms but im turning that prop to its max
I can get 26-28 topping out at 6000 rpms trimmed way up. at a decent trim 5500-5800
jumps up on plane quick
im happy but I know with a different pitch I can reach 30. but w.e. speed doesn't rule me. its for fishing. and running in a squirt of water
 
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