Spikey Posted July 17, 2014 Share Posted July 17, 2014 I have a 1050Kv, 520W, 35A max motor on my test rig at the moment with a 2S LiPo, and with a 9 x 6 SF it's drawing 9.8A to give 78W. When I change to the biggest wind-shifter I have, a 9 x 7.5 SF, it's showing 11.5A for 92W. What I'm after is 100-110w and lowest revs for a given thrust, so what sizes of SloFly prop do I try next? I just can't envisage what the effect would be of moving say from 9 x 7.5 to 10 x 4.7 ... Quote Link to comment Share on other sites More sharing options...
eflightray Posted July 21, 2014 Share Posted July 21, 2014 Do you just want 100w static, or do you want a specific type of flight ? More pitch, or more diameter will give you 100w but the flight could be totally different. A 10 x 4.7 should give more thrust and better acceleration, over the 9 x 7.5, which will give a higher top speed. Swings and roundabouts. The only way, (in my opinion), to choose a prop, is to fly it. You can get 100w with a flywheel. Quote Link to comment Share on other sites More sharing options...
Spikey Posted July 21, 2014 Author Share Posted July 21, 2014 Thanks for your input mister, but TBH my question's on the verge of becoming irrelevant for the time being, on account of the motor I intended to use with the Lazy Bee I'm building now is apparently no longer available. I need to do some more static tests and come back before much longer with a different question ... Quote Link to comment Share on other sites More sharing options...
eflightray Posted July 21, 2014 Share Posted July 21, 2014 Great plane the Lazy Bee, I built a 43" span version. Flew really well, until it caught fire. Used an Emax 2812 turning a GWS 7x4 HD on a 3s pack. **LINK** Quote Link to comment Share on other sites More sharing options...
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