Motor heats up so fast then shuts down???

[Dbnjzb]

So, I can't figure out why, but my motor heats up so fast! I'm running a Turnigy Trackstar 2560kv which is rated for 4s. I have a 150amp esc. Once it gets to 180ish (about 2 mins of driving) it seems to shutdown like my batteries are dead because it slows down. Tried 3 sets of batts. I have the stock spur in and I've tried a 15t and a 20t spur with same results. If I let it cool it'll run again for a few mins. Very annoying! Any ideas of what I can do to stop this? I ran this motor in my savage x conversion on 4s and it never got this hot, and that thing moved! I appreciate any ideas. Thanks in advance. Dave.

 

[2revo1maxx]

What truck is it on?

 

[Dbnjzb]

What truck is it on?

Oops! It's an Associated RC8.2e 4wd buggy. Thanks for the fast reply!

 

[2revo1maxx]

So it worked fine on a savage? Correct? I'm guessing it's way over-geared on a buggy since they don't really have a transmission.

 

[Dbnjzb]

So it worked fine on a savage? Correct? I'm guessing it's way over-geared on a buggy since they don't really have a transmission.

Yeah worked fine on savage! Hmmm. Thats true! That sounds like its the reason but I don't know which direction to go. Up in size down in size...spur or pinion. thanks.

 

[frickenjoey]

You need to get a smaller pinion, it will put less strain on the motor and reduce your temps.

 

[Dbnjzb]

You need to get a smaller pinion, it will put less strain on the motor and reduce your temps.

Thank you Joey, I will try something smaller! Hopefully, that solves my prob.

 

[2revo1maxx]

Yeah you probably have to go quite a bit smaller on the pinion and a bit larger with the spur too.

 

[Dbnjzb]

Thanks! I'm gonna try to find today!

 

[Dbnjzb]

Ok, so input an 11t pinion in and same problem! Idk what to do now, I'm stuck. Thanks for any feedback!

 

[Metalhead Matt]

Settin your mesh too tight possibly? Any binding in the drivetrain?

 

[trax de max]

is it the esc thats hot. or the motor.
could be mesh, binding, where your driving, or how your driving.

 

[Dbnjzb]

It's the motor. Not seeing binding.

 

[Greywolf74]

One possibility is you have bad bearings somewhere in yoru drivetrain that is causing alot of friction and making the motor have to work to hard to move it. I would inspect the drivetrain from front to back.

 

[2revo1maxx]

The stock gearing on an hpi vorza, for example, is 15/48, that's a 3.2:1 ratio. I would go even lower than that with a 2650kv motor, something like 3.5:1. Of course the vorza has different diffs, but the ratio on their diffs should be somewhat close to any other buggy.

What esc and batteries are you running?

 

[Dbnjzb]

One possibility is you have bad bearings somewhere in yoru drivetrain that is causing alot of friction and making the motor have to work to hard to move it. I would inspect the drivetrain from front to back.

Thanks. There's no real binding when I spin the wheels. They spin freely.

 

[Dbnjzb]

The stock gearing on an hpi vorza, for example, is 15/48, that's a 3.2:1 ratio. I would go even lower than that with a 2650kv motor, something like 3.5:1. Of course the vorza has different diffs, but the ratio on their diffs should be somewhat close to any other buggy.

What esc and batteries are you running?

I have an Hobbyking 150 amp esc and a few batteries. One is a gensacearespammers 4s 5000mah 40c. The others are in series 2 2s batts. Thanks.

 

[Dbnjzb]

Just realized its fine on 3s! But I run 2s' in series and have a couple of 4s batts so therefore that doesn't help me. Could it be the cheap motor and esc?? Idk