Quote:
|
Originally Posted by sleebus.jones
Well, I'm not sure if you thought of the current draw of the 7XL.
The 7XL is pretty close in KV to the 10L. However, the problem then is that it is a 95A draw motor. You are running at the ragged edge of the limits of the ESC at that point. Also, a 4Ah pack (assuming it's 20C) ain't gonna feed that motor, because you're looking at 80A continuous out of that pack. To me, the 7XL seems to be asking a lot of the pack and ESC...I may be wrong, I'm sure someone will tell me if I am. :)
I think I'd get the 8XL, which is 83A, pretty darn close to the current capability of the 4Ah pack and definitely easier on the ESC. Personally, I'd prefer a R/C that's slightly slower, but doesn't catch on fire! :005:
...
|
You are correct in saying that the 7XL can draw quite a bit of current, but it will not pull that current
all the time. Just think; if a motor pulled even 80A all the time on a 4Ah pack, runtime would only be 3 minutes! Since most of us get runtimes of
at least 10 minutes, the current has to be an
average of 24A. Of course, there will be peaks when you take off from a standstill or accelerate heavily where motor current will exceed 100A, but all our car ESC (MM included) is made to take those peaks and more provided the duty cycle is relatively short.