ESC problem

[ib456]

Hi,

Just got m new 110A ESC in the mail, soldered the conectors on and plugged it all in.... pulled the throttle on the Tx the motor spluttered at bit, ran for about 5 seconds with no control then stopped... It now doesnt want to go...
the power is still going thru for the receiver but no speed control..

I was running a 9.6v battery, powering a Speed 700 9.6v race motor.
It doesnt smell burnout and I have done that before and they stink...
any ideas on what I have done?

link to the ESC below.

http://www.r2hobbies.com/proddetail.php?prod=rcps61604

[SweetAccord]

Trouble shooting ESC

1. Make sure you really have a solid 9v source.

2. Disconnect the motor. Put volt meter on 20v. Connect a volt meter to the line of the motor out on the esc and pull throttle to full and check the voltage. No voltage, it's dead.

3. If you don't have a volt meter connect a bulb or another motor of the same type.

4. I noticed that the esc has no fuse or short protection features? Check the motor that was connected. It may have been locked up-which shorted the esc out possibly.

No moke or smell does not always mean it didn't burn out, depending on the design, seal, where and what shorted or overheated you may not smell or see anything. That is where the steps above will help narrow it down what the issue possibly is.

My thoughts: an 110A ESC for $29.00?? Never heard of that brand, I hope it's not the esc! Let us know what you find.

Hope that helps.

[ib456]

Theres a high chance the quality is dubious, just mucking about with it and it seems that it may need programming... I can get the motor to run if I hold the throttle down and plug in the battery... it just revs with no change if i move the throttle... but i did notice that this TX is a bit differnt to the one i used on it earlier so will go back to the old tx & rx and try again...

If it doesnt work, will just get a good ESC locally, i just dont like to spend too much on equipment as my attention span is about 5 minutes long... once it is built and working I really dont use much...

[ib456]

Fixed the issue, went and spent a small fortune on an Astro Flight 207D, that should fix any issues I am having... 6-36 cells as well if I ever get mad and want something insane...

[SweetAccord]

Good news!

[Dale Koblitz]

Thats not really solving the issue but it gets your boat on the water. I guess thats what you get for a $30. 110amp esc.

[ib456]

True, but it does mean i get to play with it now rather than muck about and it is a far better ESC.. took it out this morning, worked a treat... tho i think 9.6v isnt quite enough, it could always go faster....

Back to the orginal issue, I hooked up a 480 size motor i had thinking that maybe the bung ESC couldnt handle the 700.. which thinking about it i dont think it will be able to...

I found that if I have no battery plugged into the rx (4.8v) it wont work but if I have one plugged in it will work, but if I unplug the battery from the ESC (7.2) it still works with the rx battery plugged in... so I am making an assumption that there it a break somewhere in the conection to the ESC...
But i didnt think you could plug in a battery to the rx and have it power the motor... and if did it would limited to 6v? is this correct?

[Dale Koblitz]

I'm not sure about that? I've never tried to run a motor on a reciever pack? And as far as the r/x limiting the power that might depend on weather the r/x has a bec. Either way this wouldn't be an efficient way of powering the system since the wires leaving the esc are probably 18 guage or smaller as one problem not to mention it probably would heat up the r/x and fry it. I would try taking the esc apart if possible and check the solder joints on the power wires. If that isn't it I have no idea what to do since it's probably something to do with the board and I'm not electronics repair man? Have you tried to hook a volt meter up to the motor leads while everything else is hooked up and give it throttle to see if it's giving out any power from the esc?

[ib456]

Found it will only accept 6v, abit odd really.... meant to take 10 cells.... stupid thing, will send it back and get a replacement...

[arrowskartax9]

Do you need a seperate BEC for this speed control ??

[785boats]

ib456
I bought a couple of those when they first came out.
Experienced the same problem as you. One would only work up to 8.4V and the other only up to 9.6V. So I use them in a scale model that runs on 6V. They still run fine to this day. But there's only a couple of amps draw on the motors though. It's a scale paddle wheeler.
So they obviously haven't fixed the original problem.
Paul.

[pompebled]

Hi ib456,

I got one too and opened it up before using it, as the 110A forward seemed a bit 'much' for my likings.
There are just three Fets for the forward power and two for reverse, the connection to the heatsink is shabby at best, I only powered a 480 motor in my tug and it got rather hot (with a non existant low-end response) in a small speedboat with a 540 motor would be the max for it.

It will most likely die, trying to power a 700 motor...

Ya gets what ya pays for...(crap)

Regards, Jan.

[sundog]

A while back I was going to say maybe the esc is sold set up for 3s and has low voltage cutoff causing the problem. If that was the case, programming it might fix the problem. But never mind.....

[pompebled]

It's a non programmable brushed motor ESC, so adjusting to the motor used, is a matter of selecting a suitable motor for the ESC...

Never mind indeed.

Regards, Jan.

[sundog]

It's a non programmable brushed motor ESC, so adjusting to the motor used, is a matter of selecting a suitable motor for the ESC...

Never mind indeed.

Regards, Jan.

ooOOOoo, I saw it was good for 6-12v and had low voltage cutoff, so was thinking of a similar problem I had a while back. indeedy.