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Control slop

 
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wdaniell.longport(at)gmai
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PostPosted: Thu Dec 14, 2017 9:49 am    Post subject: Control slop Reply with quote

For the assembled wisdom
I have a minor amount of slop in my controls from the tufnol bearings at front and back of the cockpit module.   I don't notice it in flight but it's an imperfection and l guess we all know how that feels.  This is derived either from build or some kind of drying out/shrinkage over the considerable lapse between assembling flying controls  and flight.
My thoughts were to drill a hole in the top of the tufnol bearing into which I could inject grease - maybe damping grease.
Anyone got any other ideas that don't include major surgery?
Will


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Duncan McFadyean



Joined: 18 Jan 2011
Posts: 218

PostPosted: Thu Dec 14, 2017 10:06 am    Post subject: Control slop Reply with quote

Will,
You don't say whether radial or axial 'slop'.
Greasing the dried out bearings usually causes the Tufnol to expand in a direction perpendicular to the plane of the fabric, which would remove some axial slop but can cause the bearing to go tight/sticky.
I don't know how you would remove radial slop; grease would be quickly displaced from the imperfect bearing contact of this item.
Duncan McF



Quote:
----Original Message----
From: wdaniell.longport(at)gmail.com
Date: 14/12/2017 17:49
To: <europa-list(at)matronics.com>
Subj: Control slop

For the assembled wisdom
I have a minor amount of slop in my controls from the tufnol bearings at front and back of the cockpit module. I don't notice it in flight but it's an imperfection and l guess we all know how that feels. This is derived either from build or some kind of drying out/shrinkage over the considerable lapse between assembling flying controls and flight.
My thoughts were to drill a hole in the top of the tufnol bearing into which I could inject grease - maybe damping grease.
Anyone got any other ideas that don't include major surgery?
Will



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wdaniell.longport(at)gmai
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PostPosted: Thu Dec 14, 2017 10:45 am    Post subject: Control slop Reply with quote

Mmm thanks....
The slop is a little of both...I though about a shim of the same phenolic material like a large washer split in half but as you say about the grease option, this would probably work for the axial movement not the radial slop.
Will

On Dec 14, 2017 13:09, "ami-mcfadyean(at)talktalk.net (ami-mcfadyean(at)talktalk.net)" <ami-mcfadyean(at)talktalk.net (ami-mcfadyean(at)talktalk.net)> wrote:
Quote:
Will,
You don't say whether radial or axial 'slop'.
Greasing the dried out bearings usually causes the Tufnol to expand in a direction perpendicular to the plane of the fabric, which would remove some axial slop but can cause the bearing to go tight/sticky.
I don't know how you would remove radial slop; grease would be quickly displaced from the imperfect bearing contact of this item.
Duncan McF



Quote:
----Original Message----
From: wdaniell.longport(at)gmail.com (wdaniell.longport(at)gmail.com)
Date: 14/12/2017 17:49
To: <europa-list(at)matronics.com (europa-list(at)matronics.com)>
Subj: Control slop

For the assembled wisdom
I have a minor amount of slop in my controls from the tufnol bearings at front and back of the cockpit module.   I don't notice it in flight but it's an imperfection and l guess we all know how that feels.  This is derived either from build or some kind of drying out/shrinkage over the considerable lapse between assembling flying controls  and flight.
My thoughts were to drill a hole in the top of the tufnol bearing into which I could inject grease - maybe damping grease.
Anyone got any other ideas that don't include major surgery?
Will





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budyerly(at)msn.com
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PostPosted: Fri Dec 15, 2017 1:35 pm    Post subject: Control slop Reply with quote

If it isn't broke, don't fix it.   A small bit of looseness up to .032"  is not going to hurt a thing.  Once it gets to .032 you can shim it a bit to feel better.


Regards,


Bud Yerly,
Custom Flight Creations, Inc.


Sent from my Verizon Wireless 4G LTE DROID

On Dec 14, 2017 1:48 PM, William Daniell <wdaniell.longport(at)gmail.com> wrote:
Quote:
Mmm thanks....


The slop is a little of both...I though about a shim of the same phenolic material like a large washer split in half but as you say about the grease option, this would probably work for the axial movement not the radial slop.


Will











On Dec 14, 2017 13:09, "ami-mcfadyean(at)talktalk.net (ami-mcfadyean(at)talktalk.net)" <ami-mcfadyean(at)talktalk.net (ami-mcfadyean(at)talktalk.net)> wrote:
Quote:
Will,
You don't say whether radial or axial 'slop'.
Greasing the dried out bearings usually causes the Tufnol to expand in a direction perpendicular to the plane of the fabric, which would remove some axial slop but can cause the bearing to go tight/sticky.
I don't know how you would remove radial slop; grease would be quickly displaced from the imperfect bearing contact of this item.


Duncan McF



Quote:
----Original Message----
From: wdaniell.longport(at)gmail.com (wdaniell.longport(at)gmail.com)
Date: 14/12/2017 17:49
To: <europa-list(at)matronics.com (europa-list(at)matronics.com)>
Subj: Europa-List: Control slop

For the assembled wisdom
I have a minor amount of slop in my controls from the tufnol bearings at front and back of the cockpit module.   I don't notice it in flight but it's an imperfection and l guess we all know how that feels.  This is derived either from build or some kind of drying out/shrinkage over the considerable lapse between assembling flying controls  and flight.


My thoughts were to drill a hole in the top of the tufnol bearing into which I could inject grease - maybe damping grease.


Anyone got any other ideas that don't include major surgery?


Will













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rampil



Joined: 04 May 2007
Posts: 870

PostPosted: Fri Dec 15, 2017 2:43 pm    Post subject: Re: Control slop Reply with quote

The Enemy of Good is Better!

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Ira N224XS
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wdaniell.longport(at)gmai
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PostPosted: Fri Dec 15, 2017 5:23 pm    Post subject: Control slop Reply with quote

Hahaha....

Thanks for your adjustment to Fred the great.
And thanks to everyone....I will follow Bud's advice and leave well alone...... for now.
Will
On Dec 15, 2017 17:46, "rampil" <ira.rampil(at)gmail.com (ira.rampil(at)gmail.com)> wrote:
Quote:
--> Europa-List message posted by: "rampil" <ira.rampil(at)gmail.com (ira.rampil(at)gmail.com)>

The Enemy of Good is Better!

--------
Ira N224XS




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