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Old 10-18-2013, 02:03 AM   #1
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Default Reverse motor rotation on sensored ESC

Hello, I have a Speed Passion Reventon Pro combo with sensored Motor but I need the motor to spin in the opposite direction for my new car. As the ESC doesn't have an option to change the direction, is there any other way i could run the motor sensored? I'd also consider resoldering the sensor wire (i read you have to swap pin 2 and 3) as long as it doesn't fry my electronics.
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Old 10-18-2013, 06:17 AM   #2
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U may be able to swap wires on the esc/motor leads
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Old 10-18-2013, 06:31 AM   #3
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wouldn't that fry the esc if I still use the sensor at the same time?
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Old 10-18-2013, 06:31 AM   #4
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You can't swap wires on a sensored system. Just reverse the throttle setting in your radio. I had to do it on my wraith.
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Old 10-18-2013, 06:37 AM   #5
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Quote:
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wouldn't that fry the esc if I still use the sensor at the same time?
No, u just swap 2 wires it will run in the reversed direction, if u swap the wrong 2 then it just won't work
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Old 10-18-2013, 06:37 AM   #6
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that doesn't work, despite I only have forward/brake/reverse-mode in one of >5 firmwares available, I would've to double tap the throttle after braking to accelerate out of the corner which makes driving nearly impossible.
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Old 10-18-2013, 06:38 AM   #7
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No, u just swap 2 wires it will run in the reversed direction, if u swap the wrong 2 then it just won't work
the wrong 2? I thought it doesn't matter which two wires you swap
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Old 10-18-2013, 09:06 AM   #8
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Well there is a neg and pos, and a neutral wire so to speak, so if u cross the a&b wires and it don pt work, cross a&c or c&b and so on lol
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Old 10-18-2013, 09:17 AM   #9
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Quote:
Originally Posted by theblitzkidd View Post
Well there is a neg and pos, and a neutral wire so to speak, so if u cross the a&b wires and it don pt work, cross a&c or c&b and so on lol


You cannot swap wires on a sensored setup.
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Old 10-18-2013, 09:18 AM   #10
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Quote:
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Well there is a neg and pos, and a neutral wire so to speak, so if u cross the a&b wires and it don pt work, cross a&c or c&b and so on lol
That is incorrect. A, B, & C are 3 phases, that are switched between positive and negative in a rotating order by the controller as the motor turns.

You are offering very bad advice for a sensored brushless system.
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Old 10-18-2013, 09:28 AM   #11
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Quote:
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that doesn't work, despite I only have forward/brake/reverse-mode in one of >5 firmwares available, I would've to double tap the throttle after braking to accelerate out of the corner which makes driving nearly impossible.
Double tap for throttle is weird, that is normally associated with reverse in a forward/reverse mode. If you haven't already it might be worth trying Johnny's suggestion of reversing the throttle channel in the transmitter and re-calibrating the ESC to the transmitter.
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Old 10-18-2013, 12:24 PM   #12
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Take heed of the warnings given by Dave and others here, or you will be destroying an ESC.

While there are some sensored brushless motor controllers that allow the motor direction to be reversed by simply rearranging the connections to both the motor AND sensors, this requires that the system use special number sequences for the sensors, and have appropriate mapping of the phase drive to these numbers. The sensor signal sequences and phase drive specified by ROAR for RC model car use (to ensure that equipment will be compatible regardless of brand) do NOT have this characteristic, so don't try it!
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Old 10-18-2013, 01:07 PM   #13
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If your ESC doesn't not allow motor reversing you can flip your differentials over your car uses ring and pinion differentials. If you are using a conventional ball diff then I'm afraid you need a ESC that allows motor reversing such as Tekin.
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Old 04-05-2015, 03:14 PM   #14
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I had the same issue. Recalibrate the ESC backwards and it works fine. So go neutral, reverse, forward. Cheers
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