Thanks. I will try a 17x6 later. I already had a 16x8 in my stack of props. The engine seems to really wind up rapidly with the 16x8. I was going to use something to load it up a little more after I got it checked out. I believe the 26 would pull a 17x8 without much effort, but it doesn't need anymore top end. I had a 20in prop on it for a trial while I was running it on my test stand. It pulled it but under protest.