Prop torque

[fish_on]

I have a Yamaha 200 with a 19 pitch prop on a 06 21' SeaHawk and I experience LOTS of prop torque. It gives the boat a permanent list to port side when under power. I usually have to use all the port trim tab to level the boat out and if I have 2 people on that side of the boat I pretty much can't get it level. I have adjusted the trim tab on the motor from side to side but that hasn't done anything (I didn't think it would). I did some research and found that it is not uncommon for deeper V hulls with larger motors to experience this but I think there is more to it. My question is, does anyone else experience this, is there a solution, will a fin on the motor help, and should I be concerned that there may be a flaw with my hull causing this?

Thanks

[pugetplunker]

i would borrow a prop from a dealer in the same pitch and also try a 21 or 22 pitch wheel.hopefully its a bad prop and not your hull

[D-tangle]

My guess is the prop may have too much 'cup' in the trailing edge of the blade. They do this to slow an existing blade from over-reving your engine. Talk to a prop shop that fixes props. I may be wrong, but this comes to mind. Good luck.

[Starfish]

My guess is the prop may have too much 'cup' in the trailing edge of the blade. They do this to slow an existing blade from over-reving your engine. Talk to a prop shop that fixes props. I may be wrong, but this comes to mind. Good luck.



The "cupping" is there primarily to give the prop a better bite and to direct thrust to the rear rather than out in a wider cone... it's not causing torque steer. Some props do have more torque than others but that wouldn't be my first guess.

I see you already tried adjusting the torque tab on the motor. That should have helped... also I presume you've tried different trim settings on the motor, does that seem to make any difference?

One other thing that might be worth checking is motor height on the transom.

Last thing I'd check would be to make sure the motor is centered on the transom. It's pretty rare but sometimes a shop will miss and mount the motor a few inches off center.

[fish_on]

My guess is the prop may have too much 'cup' in the trailing edge of the blade. They do this to slow an existing blade from over-reving your engine. Talk to a prop shop that fixes props. I may be wrong, but this comes to mind. Good luck.



The "cupping" is there primarily to give the prop a better bite and to direct thrust to the rear rather than out in a wider cone... it's not causing torque steer. Some props do have more torque than others but that wouldn't be my first guess.

I see you already tried adjusting the torque tab on the motor. That should have helped... also I presume you've tried different trim settings on the motor, does that seem to make any difference?

One other thing that might be worth checking is motor height on the transom.

Last thing I'd check would be to make sure the motor is centered on the transom. It's pretty rare but sometimes a shop will miss and mount the motor a few inches off center.




When I get it trimed all the way up WOT it will level out. I will check the engine mounting and make sure it is centered.

Thanks everyone.