Bubblehead

Which brand of 17.5 motors has the best heat tolerance? I've seen a Trinity ReVtech go up in smoke maintaining an average temperature of 160*.

LMRacing

iTrader: (27)

I've never seen a motor go bad at that temp unless somthing freekish happend. What ends up destroying the motor is one of three things.

1) The Rotor looses its magnetic force so the motor looses power and starts heating up more because it cant handle the same gearing it once could. If you catch it in time replacing the rotor will keep this from happening. Rotors generally start to wear from long term use or from getting to 200+ more than a couple times. The hotter the rotor gets the more magnatism it looses.

2) The solder in the windings melts, occasionally this can be fixed but warning will robinson, if it got in the wrong spot it will destroy your ESC the next time you plug it in.

3) The Epoxy in the windings has melted. This is the most common reason a motor goes bad from extreme over heating. The epoxy is the same in all motors and melts down at the same temperature so there is really no one motor brand that is more tollerant than others but occasionaly you get a fluke motor that is more or less tollerant that can be from any of the manufactures

All in all I've had the best luck out of Trinity motors

CarbonJoe

The LRP X-12 motors are pretty robust. Several people have had them come off around 210 deg F with no ill effects.

valk

iTrader: (13)

im bad, i know, but my Tekin routinely came off the track at 160-180 after races. i use fans but she gets toasty. running it in my 12th now 17.5 boost, doesn't appear to have been affected. keeps up with brand new stuff just fine.

Hope the new LRP i just picked up for a second car is as tough against noob abuse ha.

Bubblehead

Will Robinson that's a good one, took me a while. The ReVtech did melt (smoke) around the windings, but his temp was around 160-170* range.

ShaunMac

Wasn't there an issue with the 3 main motor screws causing binding on some of the Revtech motors?

Bubblehead

About 2 or 3 weeks ago all 3 of his screws did back out and he recommended that I lock-tight my screws which I did. I don't know what to do with mine use it as a practice motor or race motor.

swimbikerun

iTrader: (108)

I've gotten my LRP X-12 coming off ~230F during the summer without noticeable long term negative effect. I did notice fading during toward the end of the runs when it runs that high. I know the manufacturer doesn't recommend excess of 210F. That being said the LRPs do tend to run on the high side of temperature. Most of the newer design motors seem to run significantly lower temps (less 160F).

roger999

iTrader: (13)

What about speedos? What max temp they should handle?

Bubblehead

Maybe the ReVtech is not a boosted motor, the ad in Xtreme RC Cars Aug 2011:

More Mechanical Timing For A Horsepower Edge In Blinky Stock Classes

I'm putting mine in my blinky car.

Bubblehead

I have never measured the temp of my ESC.

big_ads

iTrader: (88)

You are correct on that. The revtech was designed for blinky racing. If you are going to use it in a boosted type application, get a D3 (motore that the revtech is based on). I use two of the 13.5 ones and have had several 190-200 degree runs on each and they are still working flawlessly.

olly986

on tekin rs pro you have red lights that will show how hot is the speedo

Bubblehead

roger999, asked what is the max temp for a ESC? The On-Board Temperature Monitor only shows the Good, Bad, and the Ugly temps.

olly986

still useful to know at a quick glance if you reached the "ugly"