Scx10 honcho lack of power

[thetinman85]

In having a problem with my truck with a fully charged lipo and after running it for about ten minutes it lacks power like the battery is low not sure what is going on with it. The motor is hot to the touch.

5200mah lipo.
35T motor 20T pinon.
Stock spur gear
CC BEC at 6v.

Any ideas what might be wrong?

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[Pat M]

disconect drive lines and make sure nothing is binding or haning up

[hatefulboy]

When was the last time you did a complete tear down? Water is really tough on bearings and all metal parts. Do like the other guy said too. Also check your motor brushes too.

[thetinman85]

Trans and axles are nice and free. I have steel gears in the trans and cleaned/greased the rear axle, not the front yet will do that today. It's a sealed motor I can see the brushes they look ok. How is the best way to clean the motor possible bad motor?

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[hatefulboy]

I think the only way to clean a sealed motor is with motor spay cleaner. Also don't forget to oil the bearings/bushings after you clean it. The armature may be burned or really baddly grooved.

[thetinman85]

If it was burned would that cause my problems

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[hatefulboy]

If it is glazed over or burned spots on it it could.

[6sharky9]

How many packs have you run through the truck so far?

Im not thinking they are oil-lite bushings in the motor where you don't need to oil them....Flush it out with some motor spray and oil it up on both ends.
You should be oiling the bushing ever couple of runs and always after running through water/mud after a good motor flushing.

My stock 27T ran warmer than I wanted it to with a 20T pinion...You may want to try a 17 or 16T pinion with your 35T...You will lose a good amount of speed but
your temps should drop in general and low speed control will improve a whole lot.

If you don't like the speed with a 16T you can try a 3s battery but be careful as its much easier to break things if not careful ,or get a better 27T rebuildable motor...should have a lot more wheel speed and close to the same power compared to the sealed can motor even with the 16T pinion.

Good luck finding the issue.

[thetinman85]

I don't know what you mean by running pack thought it

Just installed a smaller spur gear to try to help. cleaned out the motor and slot of dirt, And oiled up the bearings still getting very worm.

Could it be just a bad motor

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[wilbywise]

Originally Posted by thetinman85

I don't know what you mean by running pack thought it

Just installed a smaller spur gear to try to help. cleaned out the motor and slot of dirt, And oiled up the bearings still getting very worm.

Could it be just a bad motor

Packs would be in reference to how many battery "packs" you have ran on the motor. If your still finding issues I would chalk it up the game and get another motor to solve the problem. You can find cheap motors for less than the $20ish range, ex. (Axial 20T or the stock 27T for scx10's, Traxxas Titan motors 540 or 550 cans ranging from 12T to 20T). Finding the correct gearing can be difficult /trial and error, I would keep check on the forums motor/electronics specific for that info here on RCC. You will never look back if you get medium/highend motor, it just works that much more efficiently as long as you take of it!

[thetinman85]

Ok.. Is a RC4WD brushed 35t boots rebuildable RC4ZE0045. Good motor.

How do you brake in a motor good way.

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[jeepman1979]

don't over look your driveshafts, just a little bit of binding will make it overheat

[Johnnysplits]

Originally Posted by thetinman85

Just installed a smaller spur gear to try to help

That will make your situation WORSE. Go UP on the spur. Personally, I always put the largest spur that will fit first, then do performance adjustments with the pinions. Smaller spurs really load up the motor (drivetrain has more leverage on the motor) where large ones do just the opposite. Playing with smaller spur diameters is good with onroads where there is near zero rolling resistance.

[BigJon]

Tinman I would definitely go with a rebuildable one even if you don't have a lathe or know someone with one you can replace brushes and pull them out if you gut a hung brush.

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[thetinman85]

Cool thanks for all the ideas will be putting all them in play. Thank you

[jeepman1979]

Originally Posted by thetinman85

Cool thanks for all the ideas will be putting all them in play. Thank you

I have a com lathe if anyone ever needs to use it, they can

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[skerb]

Sounds like you are over geared and burned up that motor. Step down to a 14/87 and a different motor.

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[Fritzn19]

I agree with skerb... I had the same problem, my wraith would run perfect for ~10 minutes then the motor would be extremely hot to the touch and I would smell a slight "clutch" smell. But, in my case my motor would not work once it got to a certain temperature. Once it cooled and I cleaned it with the electronic spray cleaner it would work again... I went the long route and replaced the stock 20t with a tekin pro4 4600kv (toooooo much power!) and mamba max pro. I went through 3 motors in a short time so this was the best route for me. Good Luck!

[thetinman85]

Originally Posted by skerb

Sounds like you are over geared and burned up that motor. Step down to a 14/87 and a different motor.

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Ok, I have ordered a RC4WD 35t rebuildable motor and will be ordering a new pinion as well.

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[thetinman85]

Originally Posted by wilbywise

Packs would be in reference to how many battery "packs" you have ran on the motor. If your still finding issues I would chalk it up the game and get another motor to solve the problem. You can find cheap motors for less than the $20ish range, ex. (Axial 20T or the stock 27T for scx10's, Traxxas Titan motors 540 or 550 cans ranging from 12T to 20T). Finding the correct gearing can be difficult /trial and error, I would keep check on the forums motor/electronics specific for that info here on RCC. You will never look back if you get medium/highend motor, it just works that much more efficiently as long as you take of it!

How do you brake in/oil (what kind of oil to use?) a new motor. I will be getting new one in a day or so. I would like to try to make this motor last a little longer.



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