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Jon Linke
 Post subject: Aileron hinge
PostPosted: Wed Jan 19, 2011 7:50 pm 
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Location: Dayton, NV
Is there any operational experience with a full span aileron hinge? Is rear spar bending a concern for a full span hinge, creating a possible bind?
Thanks, Jon Linke #1321


Last edited by Anonymous on Wed Jan 19, 2011 7:50 pm, edited 1 time in total.

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Rich Brazell
 Post subject: Aileron hinge
PostPosted: Wed Jan 19, 2011 9:52 pm 
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Joined: Wed Oct 21, 2009 12:33 pm
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Location: Jamul, CA (San Diego area)
Reason for installing a full span hinge ? Makes gettin that hinge pin in a bit of a talley wack ! Plus the extra weight.

RB


Last edited by admin on Wed Jan 19, 2011 9:52 pm, edited 1 time in total.

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mac nussey
 Post subject: Aileron hinge
PostPosted: Thu Jan 20, 2011 6:29 am 
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Joined: Fri Oct 23, 2009 6:20 pm
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Location: Canada
There is a reference somewhere back in a NL or the forum re: a binding problem. If I can find it I'll post it.

Mac Nussey


Last edited by admin on Thu Jan 20, 2011 6:29 am, edited 1 time in total.

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leewwalton
 Post subject: Aileron hinge
PostPosted: Thu Jan 20, 2011 8:48 am 
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Mac is right. I had this conversation with my dad years ago (aspiring young engineer's curiosity). Dad never discouraged that when it came to the airplane and mailed off a letter to John Thorp. The response was that a full span piano hinge was a no no in his book due to the potential for binding.

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N51863,N118LW
KEFD


Last edited by admin on Thu Jan 20, 2011 8:48 am, edited 1 time in total.

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Doug S
 Post subject: Aileron hinge
PostPosted: Thu Jan 20, 2011 2:21 pm 
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Location: Daytona Bch, FL
As a wee lad I to remember such discussions & I think someone had actually built a plane that way. They quickly found aileron stick forces extremely high.


Last edited by admin on Thu Jan 20, 2011 2:21 pm, edited 1 time in total.

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Rich Brazell
 Post subject: Aileron hinge
PostPosted: Thu Jan 20, 2011 2:21 pm 
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I came across this subject a while back, not sure exactly where. May have been a very early NL or post ?

RB


Last edited by Rich Brazell on Thu Jan 20, 2011 2:21 pm, edited 1 time in total.

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leewwalton
 Post subject: Aileron hinge
PostPosted: Fri Jan 21, 2011 8:04 pm 
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Lu Sunderland Quote from NL 03/06/1972

"The full-length aileron hinge makes a good seal, but is not a
good idea because of the potential for high binding friction.
When I added two segments to the S-18 aileron hinge because
of reported wear in T-18 hinges, John Thorp was upset. He
said that he had gone to great pains to reduce the aileron
control friction to a minimum and hated to see anyone put
friction in the system unnecessarily. Since it is impossible
to get perfect alignment between the mating halves of a piano
hinge, there is inevitable binding in the hinge as it rotates
and forces the two mating structures to bend by an amount
equal to the misalignment."

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Lee Walton
Houston, TX
N51863,N118LW
KEFD


Last edited by admin on Fri Jan 21, 2011 8:04 pm, edited 1 time in total.

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admin
 Post subject: Aileron hinge
PostPosted: Fri Jan 21, 2011 8:05 pm 
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I got a full span piano hinge 360 hours. its not binding at all.. J.P

*** admin posted for James Peran ***

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Last edited by admin on Fri Jan 21, 2011 8:05 pm, edited 1 time in total.

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admin
 Post subject: Aileron hinge
PostPosted: Fri Jan 21, 2011 9:10 pm 
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Some one forget to tell the people who design the Hercules aircraft...
BTW.they replacing the pins after 500 hours. J.P

*** admin posted for Jame Peran ***

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Last edited by admin on Fri Jan 21, 2011 9:10 pm, edited 1 time in total.

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