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-   -   Brownout or esc issue? (https://www.rctech.net/forum/radio-electronics/546168-brownout-esc-issue.html)

cavg 08-29-2011 12:11 AM

Brownout or esc issue?
 
I run a 1/10 shortcourse with a hobbyking 120a 1/5-1/8 esc (bought before I knew very much about anything). It has a limit of 7,5T offroad motors according to it's manual. With this, i run the Castle 1410.



The issue is, that about halvway into a battery, I frequently get "throttle brownout" meaning that the car totally loses power, and stands there for a good 2-4 seconds(sometimes less). During this time I can control the steering servo.

The glitch does seem to start after the truck takes a hit, for example after landing a jump, and then continues to return on any stretch of the track.

When i run on a flat surface i can get to lvc without any issues. But when i mix in some jumping, the glitch comes a while into a battery.

I have a 3300uf voltage protector connected to the receiver.

The fact that i can control the wheels during the glitch leads me to believe that it is not a radio brownout, and that the problem is more inclined to come from the esc.

Any ideas?

GoatsnBros 08-29-2011 01:24 AM

Yea - doesnt sound like a servo/BEC issue. You can usually recreate those on the bench.

I'm not too smart on those ESC's, but if it has a limit of 7.5T (that being the lower limit), I think the castle falls below that? I'm not sure what its rated in turns, but @ 3800kv, I'd GUESS....5.5T? Not sure with it being a 4 pole, how that figures in. Its a neu style I believe, so I dont think it follows the turns conventional motors are given...

My money would be on the ESC. How are temps when you come off?

cavg 08-29-2011 05:32 AM

I read somewhere that the 1410 is equivalent to 10,5T. Not entirely sure though.

Temperatures have always been on the coolside, the esc seems only mildly strained by the motor.

cavg 09-12-2011 11:42 PM

Got this cleared up.

It was the esc. When i opened it up there was a load of dried dirt on the electronics. After all this was cleaned off, the esc ran great.

mhavlena 01-07-2012 07:41 PM


Originally Posted by cavg (Post 9587149)
I run a 1/10 shortcourse with a hobbyking 120a 1/5-1/8 esc (bought before I knew very much about anything). It has a limit of 7,5T offroad motors according to it's manual. With this, i run the Castle 1410.



The issue is, that about halvway into a battery, I frequently get "throttle brownout" meaning that the car totally loses power, and stands there for a good 2-4 seconds(sometimes less). During this time I can control the steering servo.

The glitch does seem to start after the truck takes a hit, for example after landing a jump, and then continues to return on any stretch of the track.

When i run on a flat surface i can get to lvc without any issues. But when i mix in some jumping, the glitch comes a while into a battery.

I have a 3300uf voltage protector connected to the receiver.

The fact that i can control the wheels during the glitch leads me to believe that it is not a radio brownout, and that the problem is more inclined to come from the esc.

Any ideas?

Experiencing the EXACT same problem, but with a touring car!
Equipment = Tekin RS Pro, SANWA SRG-BLS, 451R Rx, 17.5T Ballistic motor.

Throttle Brown-out lasts only a couple of seconds and occurs mostly after a roll-over. Added a cap, ensured that all LVC's are off, changed motor/sensor wire....still happened.

I now changed ESC. Hoping that this will work.

Are you certain that cleaning the innards of the ESC was the solution?

Thanks!!


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