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Originally Posted by Rtsbasic
I've always been told 2 pole motors don't like much timing - to be honest I've only tried more than 6 degrees timing on a motor once, on a 540 6s, and it didn't much like it - it ran hotter and lost some bottom end, maybe because my batteries. Will experiment a bit tomorrow though.
Maybe Mtroniks set 12 degrees timing from the factory, and this is why I felt a small loss in power when I set it to 0? Didn't know BK set such high timing by default.
16/66 is about 20:1 in 2nd gear? The tyres are stock (5.75 inch), the motor assuming the battery voltage doesn't drop too badly (gp3700's) will be turning ~40,000rpm, which ends up around 33mph? The gearing I'm on now is 37mph by the numbers. This isn't unreasonable? My friends emaxx with stock electronics on 7 cell gp3300 packs must be doing 30mph easy.
The emaxx is 95% stock so stock weight..not too sure exactly to be honest.
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Torque > timing > RPM
Less timing more torque, less RPM; more timing higher RPM, less torque
Try 70-72 spur and you will be surprised. With 66 spur your motor doesn't reach its RPM, and I bet your batteries are getting hot as well.
Artur
P.S. Just in case
http://www.hackerbrushless.com/cars/otd/emax_otd.shtml C50 has the same Kv as 8L