I would love to put more Nitro in my YS but 20/20 fuel here is £25 a gallon and I can burn a gallon of fuel on even the poorest weekend. When I fitted the 14x4 the rpm`s did go up and you got that awful screem in the downlines, so you had to be really carefull with the throtte, I dont know how you can run a 13x5 wont the rpm`s be to high. The fun fly props do appear to be much wider and a different shape all together so maybe they cannot be compared to normal props. I think for now I will stick with the 13x6 and possibly go up to 15%. For all those wanting to try a fun fly prop I know steve webbs has the 13x4W and 14x4W APC in stock now!

The YS in my cap has the power to do everything, However I was trying to make prop hanging easier as it is a little unstable. so any advice would be gratefull.

Mike