At 00:17 20 October 2016, Dan Daly wrote:
On Wednesday, October 19, 2016 at 6:57:43 PM UTC-4, Dan Daly
wrote:
On Wednesday, October 19, 2016 at 5:14:42 PM UTC-4,

wrote:
Do you know about the SZD-59 aileron drive?

Nope. If you e-mail me the picture of the aileron circuit (from
parts
manual) for the 59 I can say whether it is the same or not.

It was pointed out it would have been handy to talk about hours.
My glider
has 919 hrs on it, and the aileron drive bushing is in a wing that
was
replaced about 240 hours ago (just prior to me buying it as a
factory
refurbished glider).

There are 3 55's at my field; one has just a little play, another
about
half book tolerance, and mine was just under the TSM max
(plus/minus 3mm
each way, measured at the stick with aileron held steady); I was
first up
for the fix.

Dan

I have no experience of the SZD 55 or the SZD 59 but I have
experienced a long term (slowly worsening) problem of aileron free
play on the SZD 51 Junior. In case there is a family similarity here
is my experience.

In the case of the Junior the wear occurs in the bushes fitted to the
hinge brackets on the wing, particularly in the inboard bracket
which is adjacent to the operating push rod. The aileron hinge
pins also wear but far less. Replacing the "top hat" bush in the
inboard bracket alone produces a dramatic reduction in free play!
You may need to ream the Allstar supplied bushes after you have
installed them.

Jim Thomson