Motor timing - rotation - HOT??

[bbaxter51]

I'm trying to wrap my head around brushed motor timing and rotation but after searching for the last hour, I'm just confused...

Rig - 9lb bronco tuber. Novak 35t with a 9t pinion, RC4WD R2HD trans, Gmade R1 axles, HH BRXL (new), 2s 5000mah lipo, CC BEC. 2.2 TSL's with 3oz weight in front on Mayhem Monsters.

I had this setup before with a CC Sidewinder SV2 being the only electronics difference. After I did some chassis work, I had to flip the trans around to run the motor on the back side of the rig to make the battery fit. I calibrated the BRXL and had to reverse the throttle on my controller to make frd/rev act correct. Driving around the house, everything is happy and fine.

Today, I take the rig out to some rocks and do some crawling. It feels like I'm running on a dead battery; motor stalls when it never did before and the motor got hot. Hot enough smell hot and pull your fingers off the motor and trans immediately after touching it. It always ran cool before the esc swap and turning the motor/trans around 180*. I've also got the esc in a project box which I have on a couple other crawlers without issue, does the BRXL need lots of air to keep cool too?

Here's a pic of the motor and timing marks; I have no idea what I'm looking at really... Any ideas?



Here's from back to front.

[EeePee]

Might be coincidence that the motor is in need of care, or done.

Does it go faster in forward or reverse? Whatever your answer is, make it go slightly faster in forward by rotating the endbell of the motor against the direction of the way it spins as the truck goes forward. It won't take much, and you'll hear it and see it instantly.

[bbaxter51]

Originally Posted by EeePee

Might be coincidence that the motor is in need of care, or done.

Does it go faster in forward or reverse? Whatever your answer is, make it go slightly faster in forward by rotating the endbell of the motor against the direction of the way it spins as the truck goes forward. It won't take much, and you'll hear it and see it instantly.

Motor runs the same speed in forward and reverse. The motor has less than 10 packs ran through it and I'm running 30:1 in my trans so I should be able to break parts before stalling the motor, right?

[EeePee]

Uhhhhh, it's not exactly a "great" motor with big power.

Experiment a little and make it so it runs a bit faster in forward. Turn the endbell a little against the rotation of the armature. Won't be a huge difference, but it should be a lil bit better.

[majatra]

Originally Posted by bbaxter51

I had to flip the trans around to run the motor on the back side of the rig to make the battery fit.

When you did this, you made the motor reverse rotation. And you turned any advanced timing into retarded timing.
As EeePee states, try rotating the endbell 180 and try running it again.
It should run cooler and better all around.

[Charlie-III]

Originally Posted by majatra

When you did this, you made the motor reverse rotation. And you turned any advanced timing into retarded timing.
As EeePee states, try rotating the endbell 180 and try running it again.
It should run cooler and better all around.

Ummm...not really. EeePee stated to change the timing a bit, not rotate the endbell 180*.
If that gets done:
1-The throttle direction has to be swapped again to get correct rotation.
2-An exact 180* swap means the timing is still likely retarded.

"0" timing is the safest, slightly advanced, a timing notch or 2, (in forward) is best.