E-Maxx + 9L + 9918 = Whoa!

[Toon]

Just got back in from a full run (it rained yesterday), and this thing is insane! :D

The wheelie bar helped a little, but a full power takeoff still resulted in the truck ending up on its roof. I'm glad I've got a 'show' body coming from SebAirbrush, because I can see my bashing one is going to be frequently scraping along the ground at high speed. I don't know what the 2nd gear top speed is, but its enough, as the truck covers the ground at an alarming rate, then its on the brakes as I run out of space or a solid object approaches waiting to jump out in front of my truck...


After nearly 13 minutes of hard running (geared 17/66 with UE diffs, on 14 GP3700 cells), I took the body off and took some temp. readings. The air temperature was 50*F. Whereabouts on the motor is the most reliable place to point the IR temp gun to get an accurate reading? Because the controller was at 140*F, the motor heatsink was 120*F, the motors rear end plate was 140*F, and the bit of purple can thats visible was at 175*F! :eek: Could the higher temp reading be due to the different colors/reflectiveness of the various parts of the motor?

It won't hurt to drop down a tooth or 2 on the pinion and see what difference it makes to the performance and temperatures.

[Serum]

Don't worry about those temps too much..

The reason for the difference in temp,is because the purple is directly on the copper of the motor. you could use a heat transferring compound underneath the heatsink.. That would result in a drop of a few degree..

You can always try different gearing options and measure the temp again..