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Model Forum / Radio Controlled / Land Models / January 2004



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LRP Runner ESC Beep

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Coyoteboy - 30 Dec 2003 23:51 GMT
Hi,

I purchased an LRP runner ESC a long time ago. I did a straight swap for the
resistor and mechanical SC that were in there originally. One thing I
noticed about the ESC was the 'meeeeeeeeeee' noise associated with the motor
movement. Even when the motor is stalled it vibrates with quite a high
frequency - 5khz ish. So I'm guessing this is the frequency that the pulses
of voltage are sent in, and their width is changed for more power.

I then had a thought, I never changed the capacitors on the motor - should I
have? Might these be partially filtering power from my ESC?

James
!bungle - 31 Dec 2003 02:16 GMT
> Hi,
>
[quoted text clipped - 10 lines]
>
> James

Try dialing your throttle trim adjuster back and forth. Most ESC's will beep
until they reach a neutral point.
Turn on the radio and ESC and slowly turn the trim knob in one direction.

The progression is usually goes like this:

the vehicle moves (and beeps), vehicle slows down and stops (beeping slows
and stops), vehicle begins to move in opposite direction (beeping starts up
again).
I like to set my ESC trim at the point just before the vehicle begins to
accelerate forward- and just before the beeping starts.

If it makes the beeping throughout this entire process, something isn't
kosher...

My Novak brushless AND my regular brushed motor ESC's act this way.

HTH,

Signature

Dirk
(aka "!bungle")
'96 LS650
(aka "Rhino")

"Well, you may be a lover but you ain't no d-d-dancer"

Coyoteboy - 02 Jan 2004 12:29 GMT
Cheers for that.- all sorted :)

J

> Try dialing your throttle trim adjuster back and forth. Most ESC's will beep
> until they reach a neutral point.
[quoted text clipped - 27 lines]
> Checked by AVG anti-virus system (http://www.grisoft.com).
> Version: 6.0.556 / Virus Database: 348 - Release Date: 12/26/2003
 
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