ORIGINAL: hezik

I've always been saying and thinking that it's not the engine that makes the difference, but the prop and the RPM.

For instance, the YS 170 CDI.. it's usually flown with a prop in the 18.1x11.1 range. Also the fourstroke doesn't incrrease in RPM in downlines, or at least, minor.

So in order to get real YS style flying with an electric engine, I don't think changing windings etc will get you there. I think most electric flyers fly with a way to big prop, making gyroscopic precession a problem. Props like 23x10 etc are not rare.

Also I think there has to be a change in the way ESC's brake. Most current day ESC's only really brake when the engine is 'off'.

So.. to get an YS-like experience, electric, i think we need to fly smaller props, like 18x12, 19x12 tops, and need ESC's that keep the prop spinning at the rate the throttle stick indicates. So like half-throttle is 4000 RPM, weather you're flying an upline or a downline.

if you succeeded in bringing the good qualities of an YS, specifically the braking and running with a smaller prop, to electric F3A.. you'd be my hero. I don't think however you'll really achieve that without reprogramming the ESC.

//edit
removed my anti-YS rant, this thread is about this electric solution.

I really think the biggest gain still to be made, is in ESC software. Smoother and more lineair throttle curves, intelligent throttle monitoring, governor-like braking and, last but not least, use energy from braking to charge lipo's. We could fly smaller packs then.