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marcus
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Join Date: Jan 2008
02.10.2009, 12:59 AM

So I made a quik test here in my work area. The Flux was sitting on a box spinning the wheels as oppossed to driving.

All works fine, it's certainly quite cool being able to monitor so many parameters at once and seeing how some of them directly interact.

I did notice a failing with the truck straight off though, it's the lipos I have in there. They are cheapy 4000mah 3S but with a poor 15C rating.
You can see the voltage drop away pretty easily under throttle, and that's just spinning its wheels. The 24v at rest reading dropped to around 16v under the gun - yoiks !
Guess I better break out the 25C packs lol

VIDEO

Last edited by marcus; 02.10.2009 at 01:15 AM.
   
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othello
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Location: Austria (Europe)
02.10.2009, 09:35 AM

Glad to see your eagletree setup already at work. Recording of the eagletree software looks perfect (looking forward to see your videos with integrated eagletree data). Your poor lipos already had a very hard workout while only spinning your tires. At 56A voltage droped to 14,8V (2.46V per cell). I'm wondering if you had your lipo cutoff activated (setup properly)? At 6s your setup will require some high quality lipos considering your setup already draws around 30A (500W) while only spinning and accelerating your tires. With good cells holding voltage better max rpm will be around 50000rpm.


Brushless 1:5 custom 4wd Baja based on 1:8 truggy chassie
Jazz 55-10-32, Neu 1515/2Y (1100kv), 9s2p A123 (27v), up to 3.1KW
Latest video with eagletree Data inserts: Run on asphalt
   
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