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Servo has no strength in ONE direction?!

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Servo has no strength in ONE direction?!

Old 04-17-2010, 12:50 PM
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trpastor
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Default Servo has no strength in ONE direction?!

Hey guys - I have an old servo I was thinking of using, until I realized that if you pull on it one way you can easily pull it back to neutral. the other direction seems to be holding just fine. Obviously I'm not going to use it as is, but is this a gear issue that could be fixed by replacing the gear set?
Old 04-17-2010, 04:29 PM
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big max 1935
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Default RE: Servo has no strength in ONE direction?!

Take a look at the gears & see if the teeth are gone. Max H.
Old 04-17-2010, 05:17 PM
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Default RE: Servo has no strength in ONE direction?!

In this day and age it is nearly impossible to justify gear replacement over servo replacement ...

I had a couple 30 dollar servos with broken gears, it was almost more than half the price of a servo to get the gears, crazy. Anyhow check the prices see what makes more sense.
Old 04-17-2010, 10:11 PM
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LargeScale88
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Default RE: Servo has no strength in ONE direction?!

If its a small servo, like the standar size servo, it would be less hassle just buying a new one. If thats not an option, the gear on some part of the servo are broken, and something is wrong with the whole thing, I say new servo time!!!

Good luck
Old 04-18-2010, 12:04 AM
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proptop
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Default RE: Servo has no strength in ONE direction?!

It could be the amplifier...
I had a servo do that once..the gears were ok...the amp went bad.
Old 04-18-2010, 06:11 AM
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Edwin
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Default RE: Servo has no strength in ONE direction?!

I would replace gears in a $30 servo, even for $20 servo. With nylon gear sets around $5, seems worth it to me.
Edwin
Old 04-18-2010, 10:22 AM
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proptop
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Default RE: Servo has no strength in ONE direction?!

It's easy enough to tell if it's the gears...does it make unusual grinding/clicking noises!
Pull the top of the case off and have a look...

If the geartrain looks/feels normal, then it's electrical, (motor or amp ) and the way servos are made nowdays, most likely not worth trying to repair.

The insides of servos nowdays are all SMT (Surface Mount Technology ) so fixing anything on the board is ??? unless you're an electronics expert. The motors are usually mounted to the circuit board, so even getting them apart it iffy at best.

If the gears and case are ok, just save those parts for spares.

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