What could be wrong? - RC-Monster Forums

Stregone · **What could be wrong? -** 05.29.2009, 06:26 PM

I just got an ezrun 60A esc and a kd36 3500kv motor.

I've been waiting a month to get this up and running because the first esc got lost in transit from china, ugh.

So I solder all the connectors on, connect the motor, battery, and start programming it. First time I mess up and do things in the wrong order, but the motor did run and it was beeping when the set button was pressed in during calibration. I turn it off and try again, and there is no beeping. The flashing LED indicates I am doing it correctly, but the motor does not run after I am done.

Any ideas?

I am going to swap things around to do some troubleshooting, using a friend's equipment. But I don't be able to for a few days.

Stregone · 05.29.2009, 07:05 PM

I took a close look at the esc and noticed this. Looks like there is too much solder on the positive battery lead connection.

littlegiant · 08:47 PM

Quote:

Originally Posted by Stregone

I took a close look at the esc and noticed this. Looks like there is too much solder on the positive battery lead connection.

There is nothing wrong with the soldering. Did you calibrate your esc to your TX properly? Check the instruction manual. There should be 3 different beepings

BrianG · 05.29.2009, 08:59 PM

Probably not the issue here, but the programming instructions are a bit unclear. This post should help clear things up. I only bring it up because if you don't advance through the programming steps right, you may have adjusted something else inadventently.

Stregone · 05.29.2009, 10:10 PM

Nah something definitely fried because of the messy solder job. It worked fine the first time I incorrectly (I got the sequence messed up. I think I hit full throttle when I was supposed to be at neutral, it ended up running slowly while in neutral) calibrated it. The motor beeped the proper number of times with the LED flashing as I went through the steps. I turned it off and back on and went through the calibration again and the LED flashed properly, but there was no beeping from the motor, and the motor did not run afterwards.

Anyways, I already got an RMA number. Ugh man I have the worst luck.

BrianG · 05.29.2009, 10:49 PM

Some people simply seem to be cursed, while others can get anything to work. Hopefully it's just an isolated incident.

IIRC, there was something bad about setting 0* timing on the 150A version where it would burn something up. Don't know if it applies to this particular ESC (I imagine it uses the same firmware), but is it possible that while messing around you set the timing to 0* by accident?

Stregone · 05.29.2009, 11:43 PM

Quote:

Originally Posted by BrianG

Some people simply seem to be cursed, while others can get anything to work. Hopefully it's just an isolated incident.

IIRC, there was something bad about setting 0* timing on the 150A version where it would burn something up. Don't know if it applies to this particular ESC (I imagine it uses the same firmware), but is it possible that while messing around you set the timing to 0* by accident?

I checked the settings with the programming card and everything appears to be on the default setting still.

I'm curious, why would 0 degree timing burn out an esc, isn't less timing supposed to be easier on the motor and esc?

BrianG · 05.29.2009, 11:51 PM

I don't know why it would. My guess is a firmware bug.

06.04.2009, 10:48 AM

Ok here's my 2 cents. I have the EZ-run 60A and the KD36-50-011s. I just got it running a couple of weeks ago. First of all the soldering is just fine. The small cap is supposed to be connected to the + wire. That is not the source of your problem.

The calibration process was a little confusing to me when I first went through it, I can understand that you messed up. Did you repeat it correctly? It could be the motor if your not hearing the beeps (its the motor that actually beeps). Do you have another brushless motor to try it with?

And as for the 0 setting, I believe it was the punch setting being set to 0 that fried the 150A ESC, not the timing, but yes probably a firmware bug. I just read that thread recently.

-Jeff

junkman · 06.04.2009, 12:00 PM

The soldering looks EXACTLY like the two I have that work fine, so that's not the problem. I have had trouble programming them to certain radios. I would try a different radio/receiver first. Another odd thing I have noticed with an 80a one, is it doesn't work 100% with my dx3s. If I just slam the throttle, it just sets there, no lights change, just acts like it didn't get the signal, and will set there all day at wot. If you are just a little bit slower on the throttle works perfect, or are rolling and stab wot works fine.