ORIGINAL: Louis9624
Don't trust the manual. I have an Evolution 46 and was very successfully recomended to use a 10 by 6 by a very experienced rc pilot. My manual called for an 11 by 6 and my engine barely ran at all. Different planes want different proppellers but I would start with 10 by 6.</p>
Actually an 11x6 APC is a better match for that engine than a 10x6.