How Many amps?
#2
#4
Well if you go by say a Tekin 7.5 which is 352 watts. 352w divided by 8.4 volts is about 42 amps. If you go with a 60amp esc you should be fine with any 7.5 out there.
Vehicle and gearing has nothing to do with amperage. Maybe just strain on motor which will make it run hotter.
Vehicle and gearing has nothing to do with amperage. Maybe just strain on motor which will make it run hotter.
#5
Well if you go by say a Tekin 7.5 which is 352 watts. 352w divided by 8.4 volts is about 42 amps. If you go with a 60amp esc you should be fine with any 7.5 out there.
Vehicle and gearing has nothing to do with amperage. Maybe just strain on motor which will make it run hotter.
Vehicle and gearing has nothing to do with amperage. Maybe just strain on motor which will make it run hotter.
#6
Tech Champion

Joined: Oct 2007
Posts: 7,341
Well if you go by say a Tekin 7.5 which is 352 watts. 352w divided by 8.4 volts is about 42 amps. If you go with a 60amp esc you should be fine with any 7.5 out there.
Vehicle and gearing has nothing to do with amperage. Maybe just strain on motor which will make it run hotter.
Vehicle and gearing has nothing to do with amperage. Maybe just strain on motor which will make it run hotter.
I agree it is likely that maximum current, at stall, is the same or at least close regardless. But vehicle weight and gearing, changing the load, can have a big impact on average load and amperage. Devil's advocate, why else would the motor run hotter if not higher average amperage? If at the edge of capability for the ESC this may well be enough to cause issues.
Although I don't know the answer to the original question. Just think it's not simple to derive from spec sheets. And even if I did I wouldn't trust the ESC ratings to directly correlate.
A sample dyno chart for reference, credit to John Stranahan.
Last edited by Dave H; 01-13-2014 at 05:08 PM.
#9
Tech Master
iTrader: (39)
Joined: Oct 2011
Posts: 1,293
From: Henderson, NV
Gearing was 19/84. Don't give me credit, it was only front yard launch tests. Another motor I had was stuttering, and I was trying to get to the bottom of it. I've never done a stall test like that, mainly because I don't do the wheelie test. Although, my current ESC logs the last 12min of every single run. So, it would be easy to try. It's not a normal power configuration, but it would provide some contrast anyway.




