3 blade or 4

[smokeonthewater]

we are not certain of anything yet but we feel that the logical next step is to verify rpm and gps speed.

My calculations came up with a lower pitch prop but that would raise rpm's..... The only thing we can say for sure is that your stated rpm, speed, pitch, and engine do not match up.... there's a skunk in there somewhere and we need to find him.

THEN we can recommend a prop for ya.