Quote:
|
Originally Posted by Gustav
The Lipo voltages are out by 1 cell BTW.eg 8s says 33.3 etc.
Very usefull though.according to this,my 8 cell gp2200 packs are falling to about 7 volts under load.(says it would be pulling like 56 mph at 9.6 volts when it's pulling around 45mph according to GPS)assuming it's reaching max. rpm and the GPS is accurate,i guess the real voltage is somewhere in between.
|
Yeah, the script assumes "ideal" values; IE: no voltage losses. Unfortunately, there is no way to guess what the losses would be because it depends on the quality and current capacity of the batteries, and how much current the motor is pulling. The drop also varies with speed and is probably most prevalent during a standing start and top speed. Maybe just subtract percentage of the ideal voltage from the presets to get a more reaslistic value? Something like 5-10%?
The battery issue has been fixed and I used the real PI value instead of a simple constant. There was no rounding issue, so I don't know that the .5mph difference is about. All tranny and diff teeth were counted and calulated so that's not the issue. Anyway, the updated version has been uploaded.