Originally Posted by
FurFlyin
As Cray said, you'll SHOOT out of the hole. I was having some motor issues and thought it was prop issues and I dropped from a 19 down to a 15. First time I took it out, it literally JUMPED out of the hole and was turning 5600 RPM's by the time I got the handle buried. I had to back out of it to keep it from over revving. I ended up going back up to a 19 pitch truck once I got my motor straightened out.
If you end up needing a 15 pitch prop, I've got one I'd sell cheap. $50 plus shipping. It's a Yamaha prop. I don't know if that's the same style hub you need or if you'd need to swap the hub.
EDIT: Look on Google for a prop shop in your area. Surely to goodness where you're at, there's several prop shops. They'll generally let you try before you buy.