Play in ailerons comes from all the elements in the control system; it is definitely not limited to rod end bearings.
At the cast bellcrank beneath the floor, you may find that
one or more of the rod ends have to be shimmed to prevent
them riding up and down on the bolt which secures them in
place - do not try to tighten the bolt to prevent this or
you will damage the casting.
Next, proceed to watch (and feel) the shaft which exits the
bottom of the control column as the control wheels are
turned. If the lower bushing is worn out, the shaft will be
seen to move fore and aft. [There seem to be several
replacement bushings - bakelite, nylon, or oilite, depending
on model or mod level.]
The upper end of the control column is less easy to observe
and the chain drive actually puts some fore-aft pressure on
the upper control column bushing as it turns. Tightness of
the chain drive and condition of the control wheel shaft
universal joints provides still one more place where
looseness can occur.
The aileron pushrod control system can be really smooth, but
without significant backlash if everything is in place.
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David Smoler | __ |
|==/__ยค_\==|
*==========|==| () |==|===========*
Alon A-2 | \____/ | N6359V
s/n A35 () () () based at RHV
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The Craigmyles wrote:
>
> I supposedly have all new pushrods and Heims-ends in mine, and I
> have about +- 1/8" play at the trailing edges.
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