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Gear set for futaba s9551 low profile

Old 07-21-2013, 05:53 AM
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nonstoprc
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Default Gear set for futaba s9551 low profile

It looks like both s9551 (aileron servos) on my visa have developed some play near the center, after 1 and half seasons. I was not able to find any dedicated replacement gear set for the servo on the market.

Question: is replacement [link=http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXYAF3&P=FR]gear set[/link] for BLS551 compatible with s9551?

Thanks in advance.
Old 07-21-2013, 03:02 PM
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Default RE: Gear set for futaba s9551 low profile

I opened up one 9551 servo today and could not find anything wrong with these gears. So I cleaned and re-greased the gears. Seems like the play becomes much smaller after the servo is put back, possibly the original positions of the gears around the center are re-arranged and the mesh improves.

BTW, the 9551 gears are quire similar to those in the BLS551 set and I am waiting a reply from Futaba to confirm.
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Old 07-21-2013, 11:42 PM
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Rune
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Default RE: Gear set for futaba s9551 low profile

I put some 9551 (new ones) in my spark this spring and found them to have some play and with the long arms I have to use to get the trow I want for snaps it became some play on the aileron, I have now flown about 200 flights with them and they dont seems to develop any more play (at least not that I have notice) .
But I search for some new ones but have been to lazy to do anything more about it..
Old 07-22-2013, 11:09 AM
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Default RE: Gear set for futaba s9551 low profile

The gear set for the BLS551 and 9551 are the same so it will be no issue if you order a set for the 551.

Andrew
Old 07-22-2013, 06:39 PM
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Default RE: Gear set for futaba s9551 low profile

Thanks!
Old 10-07-2017, 09:50 PM
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Default

Originally Posted by flyboy91 View Post
The gear set for the BLS551 and 9551 are the same so it will be no issue if you order a set for the 551.

Andrew
The main gear is not the same in the hole. Waste of time..

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