Hot Wraith

[Tiger 88]

Guys - I am running into the following issue:

I have 55T Rockstar with Eiger ESC and running 60T & 9Tpinion and after crawling for about 10 min's the motor runs too hot to touch and am getting choppy runs. I have been running the 60/9 combo on other crawlers (Rooster ESC and 55T Novak).

Do I have a faulty motor perhaps? It's brand new....

Appreciate any thoughts or tips for me - thanks much!

 

[tnt-salvage]

this may not help you to much but I blew the stock motor out of my wraith so I used the 35t from my scx10 until the brushless stuff arrives. I kept the stock wraith gearing. and I can say the motor runs a lot hotter in the wraith then the scx10. both truck are around 7-9 pounds and both run on 3s lipo. I am wondering if it has anything to do with the wraith transmission turning the opposite way the scx10s do? hope someone with a better idea can help you. if not try to drop your pinion or increase the spur?

 

[Devil Inc]

Guys - I am running into the following issue:

I have 55T Rockstar with Eiger ESC and running 60T & 9Tpinion and after crawling for about 10 min's the motor runs too hot to touch and am getting choppy runs. I have been running the 60/9 combo on other crawlers (Rooster ESC and 55T Novak).

Do I have a faulty motor perhaps? It's brand new....

Appreciate any thoughts or tips for me - thanks much!

Do you have a temp gun handy? What type of terrain are you running on?

 

[SwampDawg]

anything binding?

 

[Tiger 88]

No temp gun but flipped hot to touch to the point it burns your finger if left on. Nothing binding that I can see or hear. I was going to swap out motors to just see if new motor is bad. Really strange. I feel my gearing is set up ok.

 

[rcmedic]

A 55t motor shouldn't be remotly hot at that gearing. We have members in our club that run 35turns at stock gearing without heat issues.

 

[ROLANDROCKSHOP]

your gear mesh maybe to tight...spur/pinion

 

[Turn'Nburn]

Timing advanced too far? What's your motor's timing set at?

 

[Johnnysplits]

Nothing binding that I can see or hear

Remove the pinion from the motor and turn the spur by hand. You need to feel binding...not see or hear it.

 

[Tiger 88]

Ok - thanks for the tip with this... will take the pinion off and turn by hand... if I feel binding is that a sign of bad motor then? Also - not sure how I would check timing of motor?

Thanks again guys!

 

[tnt-salvage]

I think they mean to spin the spur gear to feel binding in the transmission, axles ect

 

[evan03]

Check to see if cables coming off the ESC and battery are also getting.

Poor connections put a strain on the entire system and produce heat.

I thought cable connections when you mentioned choppy.

Outside temp the last few days has been 106 plus. 117 on a tree surface. High sir temp could be reducing cooling

 

[SwampDawg]

Ok - thanks for the tip with this... will take the pinion off and turn by hand... if I feel binding is that a sign of bad motor then? Also - not sure how I would check timing of motor?

Thanks again guys!

if you remove the pinion and the truck rolls with no resistance nor clicking, etc... then its good but that has nothing to do with the motor as the pinion is not engaged to the spur at this point.

timing is usually done via Hotwire/CC Link