crossbreak said:
about our Kelly: It seems that it does only around 3/5 as battery current of the rated 55A "motor current". That would be 33A battery current for our chosen one. For 20s Li-ion we should see 2442W peak. Not 4kW
this motor will be bored a bit: http://endless-sphere.com/forums/viewtopic.php?f=30&t=57596&p=874677#p858870
130 peak should give you 0.7 x130 =90a peak, and able to give 40A continuous.... My 240 rated peak key gave me 189A ( battery) in thé sand, and easy 110 A boost on flat the question is : are you able to handle a 72V 90a peak ? Don't forget the kelly is a square/truesin mix,... I think the guy you mention was never able to setup it....but I do not know kbs only key ones....
http://kellycontroller.com/faqs.php
http://kellycontroller.com/KBShelp.php
Set motor at 100% if you don t care heating it
And battery % according to the peak value and the I precomize 60% OF YOUR battery C discharge not to destroy it...for exemple a 8ah 30c = 240 A take 144A as max discharge not to damage...so set at 100% battery (or maybe 70% is max like on keb model) If you got a 20c 8ah, 160 À discharge, take 96A AS REAL, THEN downgrade the battery current to 70 % to protect from too much discharge, or if your sag is too much
Take nite that the software can give you full motor current at low speed because of current multiplication....so it could be your battery pack discharge rate that limit, if you haveore Amp, you reduce the sag and so you get a higher Discharge C
Kelly recommend to get 2 to 3 time the power motor rated.....72V*55A =4kW rated should be ok for a 1500/2000w rated motor....
Correct me if I m wrong...ask gindc why is truesin is more powerfull and faster with less amp