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HelicopterMain Discussion › Rebuilt servo still has play
12-16-2016 04:45 PM  11 months agoPost 1
Wahoo

rrNovice

Ocala FL

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I have a BK 8005 HV servo that , after putting a full gear set and bearings in it, still has slop throughout it's travel. I can rotate the servo horn back and forth a few degrees when the shaft ts stopped anywhere alonng it's travel. Rebuilding a sevo has always solved this problem, but not this time. I removed the top of the servo case and can see about a half pinion tooth's worth of play between the motor pinion and the first gear of the drivetrain. The pinion is the one gear that doesn't come in the replacement gear set, and I don't think I can get to it to replace anyway. I may try sending it back to BK, but does this mean the servo is worn out?

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12-16-2016 06:33 PM  11 months agoPost 2
Flyin for Jesus

rrVeteran

Dana Point, Ca.​92629

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Slop between the motor pinion and the first reduction gear will mean virtually nothing by the time you get to the output spline.
Slop between the gear on the output spline and last reduction gear will have the most affect.

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12-16-2016 07:10 PM  11 months agoPost 3
Wahoo

rrNovice

Ocala FL

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You're right. So what might be causing the play?

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12-16-2016 09:31 PM  11 months agoPost 4
ICUR1-2

rrElite Veteran

Ottawa, Ontario

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perhaps the holes where the pins sit are worn out
changing the top case may solve it

spending time, paying attention

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12-17-2016 12:56 AM  11 months agoPost 5
Wahoo

rrNovice

Ocala FL

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I'll check that out. Thanks

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HelicopterMain Discussion › Rebuilt servo still has play
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