RE: T-6A Texan II 75-91 ARF build suggestions
I'm no expert, but I have been dropping diameter and increasing pitch to get more speed. So if you are flying a 15x10 now, to get more speed I would go to a 14x11 or whatever you can find that's close to that. You could stay at the same diameter and just increase pitch. Whatever you do make sure to check the amp draw on the new setup to make sure you are not overtaxing your setup.