Is there any reason I could not use a 3 bladed prop to break in a Magnum 70 4 stroke. Break in calls for a 13x6 prop and I'm ordering a 12X6 3 bladed prop. Thanks for your input.

chopper

You should be ok with that prop...

Sounds good, run'em rich and overprop (never failed me yet).

That is the correct size 3 blade prop for that engine

Thanks! Didn't want to spend money on two props. How cheap is that I went with the 3 blade. I'm putting it on a VQ Dago Red.

chopper

If you like three blades, go for it

[sm=thumbs_up.gif] You're good to go brother!