I did not explane this very well.

with that number of posts and a 4 cycle engine, you don't reach the people that can help you in "the beginners section".

If you had asked this question ( and you still can ) in "questions and answers"you may have got 5 to 10 people with this engine and maybe someone with that plane and that engine on it.

They may have figured out the right prop or tell you, they went to a .80 4 cycle engine.

If this is your first engine, thats fine. But your still not going to get the best info here in beginners!

sticks