snaker wrote:@hotwheels_75: Can you fit a camera and record your off-road in a couple of km? I am really tempted to see the way you drain 10Ah/1km
A 4-digit voltmeter is easy but good and safe enough, fit it before your next 'draining test'.
Burgerman wrote:There are usually these options:
4mph HD with 4 pole. For high torque bariatric use.
4mph 2 pole because its cheap slow gives adequate torque.
6mph 2 pole because its cheap! And useless...
6mph 4 pole because it works properly, and can make use of a bigger amp controller.
8mph 4 pole - same as above, but less torque and control, high drain, more speed, otherwise the same as above. OK on flat ground, and are skinny...
Amps drawn spent most of the time around the 30-40 occasionally 50-60A range and would drop to single digits going downhill/little to no load. Most of this was while in a profile with top speed of 7km/h. There were a couple of speed runs at 11km/h up and down my driveway. That’s when Amps drawn peaked highest.
Burgerman wrote:What you really want to know is this.
a. Amps at full speed in a straight line.
b. Peak max Amps as you do a left/right/left zero turn on a thick carpet with as fast stick as possible. Worst case turn amps.
c. Ah used for 1 mile. Or 10 miles then divide by 10 to average.
d. Ah consumed before your battery is almost dead.
e. Amps consumed at 1mph cont speed.
f. max amps as you go from 0 to full speed up a steep slope/hill.
Burgerman wrote:Amps drawn spent most of the time around the 30-40 occasionally 50-60A range and would drop to single digits going downhill/little to no load. Most of this was while in a profile with top speed of 7km/h. There were a couple of speed runs at 11km/h up and down my driveway. That’s when Amps drawn peaked highest.
Remember that a 74Ah battery will only give half that over 1 hour. So its really about 37Ah...
So you will be lucky to see 30 to 40 mins before a lead battery is dead at that rate!
shirley_hkg wrote: Expresso, snaker and my ratings involve mostly cruising on long flat trips .
If yours were running in your yard, with lots of stop-and-go, scenario will be very different .
Burgerman wrote:And it will melt thin wires and blow small fuses! And damage low C rate cells. I have the T shirt!
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