Email address of Gary Hall does not work.
From the Cozy list archive I understand that the parts can be procured
---From McMasterCarr:
teflon sleeve: 5335K17, ID 0.066" (1.6764 mm), wall 0.012", OD 0.090"
(2.286 mm), $2.30 per 10 feet
pin: 7972A261, 1/16" (1.5875 mm), $17.60 forr 32 lengths of 3 feet
McMasterCarr does not ship overseas anymore so a US builder might
intermediate.
The diameters are smaller than the ones you mention Graham, but more
likely to be correct?
Could it be that you have larger hinges than MS20001?
I measure hinge ID of MS20001 at about 1.8 or 1.9 mm, regular pin OD at
about 1.5 or 1.6 mm.
Inserting the teflon sleeve proposed above will be a stretch already.
A question also arises concerning the pin proposed above - diameter
seems rather similar to that of the regular pin.
Jan de Jong
Graham Singleton wrote:
> <grahamsingleton@btinternet.com>
>
> Lisbet og Gert Dalgaard wrote:
>> Hi Svein
>> You take out the hinge-pin, form it as an "S" (app. 20 deg. on each
>> bend), and tap it careful back in the hinge - after that you have
>> solved the problem.
>> Regards Gert
>> OY-GDS
> This used to happen with the EZs. Some aircraft had their ailerons
> "buzz" vibrate within the boundary layer. Putting a Flettner strip on
> cured it but most of them fixed it by using a Teflon tube same OD as
> the original hinge wire and filling that with a stainless hinge pin.
> Andy Draper did research it but had trouble fining the right wire.
> You could try emailing Gary Hall,
> http://www.uslan.com/hinge-kit.html
> AFAIK he still sells the kits.
>
> Bill Theeringer used to do kits too,
> The teflon sleeving is 14 gauge electrical, has an OD of 0.125, a wall
> thickness of 0.010, an ID of 0.105,
> and uses a 0.094 302 SS welding rod pin. This results in a 0.011 slop
> around the pin. I recomend cutting the teflon at each hinge juncture so
> the teflon is captivated and rotates aroind the pin. Mine has over
> 1000 hours on it and shows no sign of wear. You can put a warp in the
> pin to
> eliminate the slight slop, but I think this will result in pressure
> points that will facilitate wear. My personal opinion only.
> Graham
>
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