motor/esc problem

[specialk]

Guys,
motor will not spin up...thought it was a backlash issue so removed tail and moved gear away from main gear (no other gears touching). when I add throttle, the motor tries to spin (maybe 2-3 turns). It acts as if it spins 2 turns one direction, then reverses and then just stops altogether. The esc also gets warm after a few of these cycles. Hard to explain but can anyone make sense of whats going on???

[SurfCity]

How's your battery charge?

[specialk]

full...should've said that before. using 3s TP with stock motor and speed control.

[piper]

It sounds like one of your motor wires is not connected to your esc. I also had a similar thing happen tonight. The motor would try to run but would never turn more than a turn or two and then stop. It turned out that the motor wires were touching the motor case and preventing it from turning. All I had to do to fix the problem was reposition the surrounding wires.

[SurfCity]

It sounds like one of your motor wires is not connected to your esc.

Good one. I've had this happen, too.

[specialk]

just checked the wires...plenty of clearance...

any other ideas?

[garentsen]

Hi,

I've had the exact same problem. Motor would not spin up just back and forth a couple of times and everything became hot.

Turned out to be bad connection between esc and motor. I wouldn't believe it at first because I've changed from the small servo connectors that were included to 2.5mm gold-plated ones.

No problems since I've soldered the connections!

/Emil

[psindrup]

Sounds as if only two of the three motor wires are connected/working.

Check the motor to ESC wires and connectors.

Peter

[Buzzkill]

+1.

Check all your connections. Might be a broken wire or a bad solder joint.

[Buzzkill]

double post.

[rotorhead58d]

i used a mini deans three way connecter. it solved the issue:thumbup:

[specialk]

you guys are awesome...
Will get a "three way" connector after work today and try again.

In other news, you have to take one servo out to get at one of the motor screws huh...:arggg:

[stoatnchips]

repalce them with M3 x 5mm button allen head bolts and you'll find that a 3mm Allen key fits fine without the need to remove the elevator servo. I was worried about stripping out the CF frame by taking the Servo in and out just to alter the gear mesh.

[specialk]

stoatnchips,
great idea...will get some tonight.

[Buzzkill]

Great idea. I really do need to write this stuff down.

[Jetleaf]

:shock: