Apollo 13 1/4X17 vs Ballistic 13 3/8X15

[kenneth80]

Bought motor without a prop. Yamaha 140, 2 stroke. Bought a new Apollo 13 1/4X17. I think max WOT for this motor is 5500. I only get around 5300 when i trim motor to the maximum. Will the forementioned Ballsitic give me me too high RPM`s? Difficult question ,i know but is it anyone out here that have tried these two propellers and can give a rough estimate?

Kenneth

 

[dazk14]

Re: Apollo 13 1/4X17 vs Ballistic 13 3/8X15

If your data is correct, then you've found your prop.

The 15" pitch will over-rev your engine.

Next step is to start raising the engine on the transom and you'll likely find that x-tra 200rpm and a little more speed.

 

[kenneth80]

Re: Apollo 13 1/4X17 vs Ballistic 13 3/8X15

Thanks dazk!
I will try raising the motor as you said.
I have heard that these motors like rpm`s so i figured i should stay at the max or slightly over recommended rpm.
Will post back with result.

 

[dazk14]

Re: Apollo 13 1/4X17 vs Ballistic 13 3/8X15

Thanks dazk!
I will try raising the motor as you said.
I have heard that these motors like rpm`s so i figured i should stay at the max or slightly over recommended rpm.
Will post back with result.

Yes, please post back, that's what makes these forums work.