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Old Feb 14, 2007, 03:09 PM
Plat3au is offline
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Dallas, TX
Joined May 2006
43 Posts
Zagi XS Pro Kit -- I Need Help Pushing The Limits

Ok, here’s the current power setup:

Zagi XS Pro Kit 48” (chopped down to 40”)
Mega 16/15/3 w/ Heat Sink
E-Flite 40 amp ESC w/ BEC
Kokam 3s1p 2000 mAh 15c LiPo (+1 spare)
5.25 X 4.75 APC Prop


Flying Weight: 25 oz
Current Draw: ~30 amps


Top Speed: 80-90 MPH


It takes too much time to build up that speed and the vertical climb rate is poor. So basically, I want more power.


Now I've talked to several guys at the local hobby shop and they all say different things. One said I'm using the wrong prop but I've metered a dozen different props (including the one he suggested - APC 5x5) and the 5.25 X 4.75 gets me the most bang without exceeding the 30 amp limit that the motor and battery have. Another guy said that I need to buy the Mega 16/25/3 motor w/ 7x7 APC prop, which I'm sure would throw off the cg on my zagi but no big deal if it would do the trick. And yet another guy recommended that I toss the E-Flite 40 amp ESC and get the Phoenix 45 or 60, then run my two lipos in series making a 6s1p 2000 mAh 15c LiPo. But I'm not sure if that would blow up my zagi or not. Sounds a bit hot.

Has anyone tried any of these suggestions or can you think of other ways to get this baby doing unlimitted vertical?

Any help would be greatly appreciated.

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Last edited by Plat3au; Feb 16, 2007 at 01:41 PM.
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Old Feb 14, 2007, 04:19 PM
Challenger 413 is offline
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Dickinson, Tx.
Joined Sep 2004
5,425 Posts
Maybe try something along these lines?


If using the CC45 at 5S or the CC60 at 6S, you have to de-rate the controller by 20%.
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Last edited by Challenger 413; Feb 14, 2007 at 04:22 PM. Reason: added info

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