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killajb
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03.14.2012, 07:27 PM

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200f is too hot, something's not right there.
My thoughts exactly, something's definitely not right much longer at 200f.. demagnetizing effect would ruin one's day I think..
   
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auto2
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03.14.2012, 09:16 PM

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Originally Posted by killajb View Post
My thoughts exactly, something's definitely not right much longer at 200f.. demagnetizing effect would ruin one's day I think..
i changed the current limiter from 200 to 150 just before that run. could that cause the motor to heat up?how?
   
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FG101C
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03.14.2012, 10:14 PM

It's diffing out to the front a lot. From my experience with brushless motors, this is just my experience, brushless motors like a load. Diffing out may be causing the motor to run with less of a load causing slight over revving. I fixed this same sort of issue in my 1/8th Truggy by going to a thicker center diff oil.

In my baja the 2028 was running hot, so I went up two teeth on the pinion and it coooled down some.

Again this is just from my experience, I'm by no means saying that's the problem with your truck or saying I'm an expert at this...end disclaimer.
   
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auto2
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03.15.2012, 06:54 AM

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Originally Posted by FG101C View Post
It's diffing out to the front a lot. From my experience with brushless motors, this is just my experience, brushless motors like a load. Diffing out may be causing the motor to run with less of a load causing slight over revving. I fixed this same sort of issue in my 1/8th Truggy by going to a thicker center diff oil.

In my baja the 2028 was running hot, so I went up two teeth on the pinion and it coooled down some.

Again this is just from my experience, I'm by no means saying that's the problem with your truck or saying I'm an expert at this...end disclaimer.

i have 30000 dif oil in the center and its still diffing out lol
well this is interesting cause i though it would of run hotter on the street using a lot of brakes and basically dragracing over and over but it ran hotter on a dusty track with no real traction with a 17 pinion where i had an 18 on the street. i probablly didnt drive it for 12 minutes on the street though cause bashing gets boring to me real fast. plus it was 45-50 degrees during the street test and the track test was 70 degrees f

Last edited by auto2; 03.15.2012 at 06:56 AM.
   
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Bondonutz
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03.15.2012, 11:03 AM

Quote:
Originally Posted by FG101C View Post
It's diffing out to the front a lot. From my experience with brushless motors, this is just my experience, brushless motors like a load. Diffing out may be causing the motor to run with less of a load causing slight over revving. I fixed this same sort of issue in my 1/8th Truggy by going to a thicker center diff oil.

In my baja the 2028 was running hot, so I went up two teeth on the pinion and it coooled down some.

Again this is just from my experience, I'm by no means saying that's the problem with your truck or saying I'm an expert at this...end disclaimer.
Diffing out def cause excessive heat, had the same probs with my EP buggys till the CD was running heavier fluids.
As if you hadn't heard it enough, 200* is excessive. With that much power to weight ratio you should be running 150-160* at the most. Gearing down may kill the fun a bit but def make a nicer/more managable drive and bring the heat way down.

My 2cents


I retired from RC, now life is all about guns and long range shooting.
   
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auto2
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03.15.2012, 11:20 AM

bondo i do know 200 is hot. thanks:-) only happened once. wont happen again. kinda suprised me. i did gear down. from 18 to17. is 45ish MPH too high for a track with 200 foot straight? maybe. that why i ordered a 16 from mike. but a few other people thought i need to gear up to give the motor some load. i do have 30,000 in the center. guess im going to 50,000?
   
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