Quote:
Originally Posted by GE90
Sorry, so this is the ESC, but I would also to change the motor to sensored to completely sort the judder??
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Yes.
A decent ESC will improve the situation slightly, (when you run it in sensorless mode, but not all can do this) but to fix the problem properly, a complete sensored system (motor, esc, sensor wire) will be needed. As there is no way of converting a sensorless motor to sensored.
My first car had a sensorless system (actually a pretty good one, as these things go), and by mucking around with settings and pinions you could get it pretty smooth on take off, but on going to sensored, it was actually quite a struggle to have it NOT start smoothly!
If you are going to change both the spec of the motor (less turns) and a new ESC, it's probably worth dropping a few quid on 2 or 3 new pinions, if the current car runs a 21 (for instance, get yourself a 20 and a 19 and maybe 18 (?) to start with. Or if you are at the club, tap up one of the friendly guys and trial a few different sizes one evening, we seem to chop and change fairly regularly in our club. (i'm currently experimenting with a smaller spur that i borrowed off a club mate, and i've had a pinion or two off him as well!)
FWIW, i have run a 6.5, 8.5 and 10.5 (all sensored) in the same car. 20 or 21 for the 6.5, 23 or 24 on the 8.5 and a 26 on the 10.5 (biggest pinion i can fit!) so a fair range.
14-10-2012
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