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Old 06-27-2011, 04:58 AM
Look out for that tree!!!
Larry3215's Avatar
Join Date: Mar 2006
Location: Gig Harbor, Wa USA
Posts: 7,061

Nicely done!

Generally speaking, its considered better to report the peak current/watts/etc at least 30 seconds into a motor run. That gives the packs a chance to settle down to their under load voltage.

If you were showing 3700 watts at 74 amps on 12S packs, that works out to 4.17 volts per cell under load.

No way your packs could hold that voltage under that load for more that a 1/1000 of a second so. Not a very realistic look at how it will really perform in the air.

If you let it run for 30 seconds to a max of 1 minute you will see the voltage rapidly drop and then after a bit the drop will slow down as the voltage starts to stabilize.

Thats the best number to use as far a in the air predictions and also for comparisons to other plans and setups.

For the most part, thats the way everyone else is doing it anyway
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