Neu Motor Running Hot

Originally Posted by bdebde

Recommended by Neu (from another forum I believe), as I have heard this as well. Also the instruction sheet that comes with the Neu motors (you do read the instructions right?) says low timing.

exact, on the Neu website

[DRIFT_BUGGY]

Originally Posted by bdebde

Recommended by Neu (from another forum I believe), as I have heard this as well. Also the instruction sheet that comes with the Neu motors (you do read the instructions right?) says low timing.

I didn't get no instructions with my motor.

Originally Posted by DRIFT_BUGGY

Running a Neu 1512 2.5D on a Losi 8ight geared at 14T/46T (44mph calculator) with 5S 5000mah 25C/50C batteries and MMM ESC. Batteries are only around the 95F - 112F and MMM is 100F - 125F (measuring through the gaps for the heat sink) and the motor gets up to 145F - 165F (it is currently winter here in Australia although no snow etc. still warmish). I am running standard diff fluids for the Losi 8ight Roller F - 3000 C -5000 R - 2000 and measuring it with the Duratrax Temp Gauge. I read on here in the FAQ section that usually when just the motor is hot it is undergeared but wouldn't really think you would need to gear for more than 44mph. Can changing the diff fluid here at all?

Not sure where you are running your car, but those temps are pretty consistent for a Neu under race conditions. Nothing to worry about at all.
You can play with the gearing and check the timing settings on the MMM to see if you can shave some a few degrees off, but those temps are more than acceptable. I keep all mine set to lowest and everything runs great. I pretty much average out about 140-165ish after a hard race. Once you start getting up to 180+ you shoudl be really concerned. I believe the official danger zone is 200+ degrees.

[DRIFT_BUGGY]

The temps are while running at my local track. I am using the standard Losi XRT (or something like that) tyres.
Here is a shot of the MMM specs

[Mozzy]

I too was beginning to wonder where my destructions were.

Luckily I'm not the only one.

[DRIFT_BUGGY]

Might set it at 3 for now since it was set at 10 before and wasn't running crazy hot, see how it goes from there and still nothing change try 0

[tc3_racer_001]

in my experience with other motors, the timing doesnt seem to do much at all except raise temperatures. would you be able to tell the difference between 3 and 0?

Originally Posted by tc3_racer_001

in my experience with other motors, the timing doesnt seem to do much at all except raise temperatures. would you be able to tell the difference between 3 and 0?

I would agree with that...

[MTBikerTim]

Originally Posted by DRIFT_BUGGY

Might set it at 3 for now since it was set at 10 before and wasn't running crazy hot, see how it goes from there and still nothing change try 0

So what was the outcome drift. Did the temps come down? I am very tempted to copy your setup.

[MTBikerTim]

That's interesting to know about the timing. Let us know what the difference is temperature wise when you drive it on the track again.

[DRIFT_BUGGY]

Well just got back from the track. With it a 3 degree the motor still got up to 170F and the ESC up to 128F, battery 95F - 110F. Im now going to set the timing to 0 and put the larger 15T pinion in instead of the 14T which will raise the top speed to 47mph. My local track is fairly large. I have some thicker centre diff fluid (10000, standard in roller 8ight is 5000) coming to. If that doesn't change the temp I might look at putting a fan behind the rc box which will flow air straight onto the motor and try to work out how to go more air flow to the motor. This is a great buggy to drive and once I work out how to get the motor to stay cool, im laughing

i ran my xt8 at the track yesterday , and i ran 4 packs, i had been running 0 timing but i changed it to 12, my temps went from 165 down to 155, but i was on a track and not wot bashing, but i think it helped.......

1515 1y , 4s , 17/48

[DRIFT_BUGGY]

Well changed to 15T pinion and timing to 0 and went down to the track and after 8 minutes again same temps as above. I thought it was running better as I perfered the 15T over the 14T but after brining it in to check the temp. I don't think I mentioned in the 1st post that I have a front cover in front of the motor to stop debris getting in the holes.

[DRIFT_BUGGY]

Would changing the centre diff fluid help much? See most people that run Brushless 8ights run 7000 or 10000 in the centre diff.
My track is pretty dusty (fine dirt) and don't really want to remove the front motor cover but might have to. Was looking at putting fly screen in front of the motor. Anyone tried this before?

[Mozzy]

Originally Posted by DRIFT_BUGGY

Would changing the centre diff fluid help much? See most people that run Brushless 8ights run 7000 or 10000 in the centre diff.
My track is pretty dusty (fine dirt) and don't really want to remove the front motor cover but might have to. Was looking at putting fly screen in front of the motor. Anyone tried this before?

What about using fly screen against the motor & a piece of airfilter foam between screen & the motor mount.

Tekno are making Neu motors that are sealed, how is this affecting the heat dissipation?