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-   -   reversing polarity (https://www.rctech.net/forum/radio-electronics/440320-reversing-polarity.html)

Slickzx 10-04-2010 02:13 PM

reversing polarity
 
is it ok to reverse polarity on the motor leads coming from the esc, this is a hpi esc with 15 turn motor and traxxas link 2.4ghz i had to reverse the polarity due to issues with the remote and esc compaitlity thanks

Slickzx 10-04-2010 02:15 PM

Im just talkin about the motor leads, i know the battery leads would fry.

Stangas 10-04-2010 06:36 PM

Electronically, there is no problem and it will spin

Timing wise.. the timing is advanced and therefore i feel the timing will be the opposite.. therefore retarded

So someone correct me if i am wrong.

I have done this with mabuchi motors with very little effect, but with adjustable timing, i would bring it back to almost 0, or go negative if an option.

racer1812 10-04-2010 09:50 PM

I don't see why you couldn't leave the leads the way they are suppose to be and reverse the throttle channel on the radio.

burnineyes 10-04-2010 10:30 PM

Your motor will not run well and not last long running reverse polarity. I also dont see why you cant get it set up with the Traxxas radio and HPI ESC

Slickzx 10-05-2010 05:09 PM

when you reverse the throttle it makes reverse have brakes and forward has no brakes it just slams into reverse instead. The guy at traxxas said i would need a programable esc to fix this he said its common to do this, and i told him the hpi was auto progammed so the esc wont learn the receivers problem.

Dave H 10-05-2010 05:32 PM

If it's only a radio-esc interaction issue, there won't be a timing or motor issue. As you are only correcting a reversed polarity issue, you end back up with correct polarity.

Timing-polarity issues only occur if the vehicle requires a reverse rotation motor. Perhaps something like the early X-Factory conversions with the standard 3 gear tranny for example (if I remember correctly they required reversed motors), before they added the 4th gear to get back to standard motor rotation.


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