Bad esc?

[sfninerfan69]

Nose dived the apprentice into the parking asphalt parking lot after clipping a power line with the wing. Snapped the motor shaft, couldn't get the set screws out of the old motor (even with heat). Destroyed it in the process) so bought a new one. Hooked everything up today after receiving the new motor from motion and motor does not work. Checked connections on motor wire harness to esc and all tight disconnected. While fooling with esc motor came on for 10 seconds did not have any motor control and it did not shut off when I turned the switch off on the side of the plane. I suspecting a bad esc (possibly damaged from the nosedive even though it looked just fine) ordered new one from motion. All flight control functions are good with installed esc. Am I on the right track? I have thrown almost as much money as to buy a new one. I'm a newbie and getting frustrated Thanks fm any help
jim

[wrongroad]

G'day sfninerfan69,
Mate, a big chance that the ESC went south when the motor was damaged. Even if you managed to pull the power off, there may well have damage due to impact that sounded rather heavy by your description.
If you still had full throttle on at impact, there might have been enough of an overload or even a short circuit that has been enough to destroy the board. Remember that some electrical components only need to look at being put in the wrong way and the smoke will come out of them.
It used to be good practice to send your receiver away to be checked by a tech after a decent prang but that seems to have been ignored by the modern pilot who then puts it in another model and suffers failure after failure for 'no apparent reason!'
If you had your motor spring to life while pushing and prodding, it could well be a crack in the circuit board in and around the battery lead connection.
Do I also note that the prop was still on? Or am I reading too much between the lines;)?
Honestly, if was my machine, I would be binning the lot. Servos, ESC, motor as it sounds like a a fairly big hit. Do you really want to trust these units in another model?:angel:
Regards and respect
Daryl

[yorkiepap]

Hey Jim,
Welcome to the hobby of toy flight. Your crash was the result of pilot error.....gonna happen no matter how hard you try to have an enjoyable outing & it WILL happen again. As a "newbie", you best prepare yourself for more accidents" as it's part of the hobby. Even we seasoned vets have a day or two like yours. If your plane would have been balsa, it would be a total loss, so there is some redeeming factor with the foamies. As far as components, everything electrical can have issues so there is no getting away from that. I just bought a large balsa EP ARF & after 3 days of assembling it & double checking everything, the 80A ESC fried an internal component. Was I happy? Nope. I had to order a new one since I had the plane for more than 6mos before I put it together & there was no warranty with that timespan. If you are getting frustrated with this incident, perhaps you should consider another hobby. You best solution is to hook up with a flying club & get some good advice & help to get your "weaning" process evolve into enjoyment. Yup...you will definitely "throw" a lot of money into this hobby. For me, I just consider it an "investment" into my retirement pleasure. Don't give up...it WILL get better.

Denny

[xviper]

I used to go out and just start buying replacement parts. But as I collected more and more spare parts in the bin, I had the ability to do some testing before buying stuff. I've bought so many parts only to find out that "that wasn't it". If you had a known good motor, you could have tested the "damaged" ESC to make sure that's what was wrong OR taken a known good ESC to see if things started to work. You don't need the exact size or type of part just to do a test.

[yorkiepap]

An easy to make problem solver is a simple "test station". I made this up to check Rx's, ESC's, & motors. This helps even for new models if a component seems questionable. Pic attached...

Denny

[sfninerfan69]

Thanks for the advice and inputs. The motor was broken due to a snapped motor shaft and could not remove set screws to replace it. Even with heat I broke the motor so it needed replaced. The esc ended up fine, it was throttle trim settings that was preventing esc arming, found that out with alot of Internet searching. She's back in the air so everything is good to go. Definitely not giving up was never my intention. I am getting addicted. Lol. Thanks again!