Brushless Motor Surging.
04-14-2013, 11:17 AM
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Brushless Motor Surging.
Ran the vxl rustler yesterday, started with a Nimh battery. After a few laps I pulled in and noticed the car surging, with the throttle in neutral it was trying to reverse in a jerky movement. Pulling the throttle a mm or two stopped it. Figured I just had to reset my throttle settings, had a lipo on the charger and was going to reset the throttle settings. Forgot all about it and ran the car on the lipo and at no point did it surge or try and move while the throttle was in neutral.
Would like to know if the surging is what is referred to as “cogging” and why it was happening on the Nimh and not the Lipo battery?
Cars a standard VXL with Velineon brushless, Nimh is the standard Traxxas 7 cell, and the Lipo is an RFI 3s 25c. LVD was on for the Lipo and off for the Nimh. Surging only started after car was warm.
Would like to know if the surging is what is referred to as “cogging” and why it was happening on the Nimh and not the Lipo battery?
Cars a standard VXL with Velineon brushless, Nimh is the standard Traxxas 7 cell, and the Lipo is an RFI 3s 25c. LVD was on for the Lipo and off for the Nimh. Surging only started after car was warm.
04-14-2013, 11:50 AM
#2
RE: Brushless Motor Surging.
ORIGINAL: FuelCoupe
Ran the vxl rustler yesterday, started with a Nimh battery. After a few laps I pulled in and noticed the car surging, with the throttle in neutral it was trying to reverse in a jerky movement. Pulling the throttle a mm or two stopped it. Figured I just had to reset my throttle settings, had a lipo on the charger and was going to reset the throttle settings. Forgot all about it and ran the car on the lipo and at no point did it surge or try and move while the throttle was in neutral.
Would like to know if the surging is what is referred to as “cogging” and why it was happening on the Nimh and not the Lipo battery?
Cars a standard VXL with Velineon brushless, Nimh is the standard Traxxas 7 cell, and the Lipo is an RFI 3s 25c. LVD was on for the Lipo and off for the Nimh. Surging only started after car was warm.
Ran the vxl rustler yesterday, started with a Nimh battery. After a few laps I pulled in and noticed the car surging, with the throttle in neutral it was trying to reverse in a jerky movement. Pulling the throttle a mm or two stopped it. Figured I just had to reset my throttle settings, had a lipo on the charger and was going to reset the throttle settings. Forgot all about it and ran the car on the lipo and at no point did it surge or try and move while the throttle was in neutral.
Would like to know if the surging is what is referred to as “cogging” and why it was happening on the Nimh and not the Lipo battery?
Cars a standard VXL with Velineon brushless, Nimh is the standard Traxxas 7 cell, and the Lipo is an RFI 3s 25c. LVD was on for the Lipo and off for the Nimh. Surging only started after car was warm.
But it shouldnt do it when the throttle in in nuetral. Your throttle trim on the radio may have been bumped, causing it to go slight reverse when in nuetral position. The very little throttle can cause cogging.
Re program your ESC, and take note of your throttle trim setting on the radio. As long as it isnt cogging at speed and the motor/esc are not getting to hot, there is no issue other than your throttle trim having been alittle off.
04-14-2013, 01:10 PM
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RE: Brushless Motor Surging.
Did check throttle trim and tried adjusting, kept doing it. Not saying that isnt the problem tho, it is a 2.4ghz so it could be in the programing side. Will reprogram the esc and reset the throttle points and see how I go. Thanks for the clarification on cogging, still learning all the electric terminology.
