RE: .049 on a Spirit
Well, I tried it and it worked fine. That engine gives just enough oomph to get it up as high as my high-start did with about 1/10 the hassle. I'm very happy I put it on. It wasn't a very good day for thermals(plus, I'm not skilled at finding them), so the flights weren't very long. I didn't have a steep climb angle (even if I wanted to), so the engine didn't have any trouble drawing the fuel. Thanks for the info guys!