snap-in center pin bushing problems

[Mike Spalding]

David,

Recently encountered that exact condition, 1941 Acro. Several were 
minor, aligned with heat gun. Two were misaligned big time, and I found 
that the bushing cloth was unevenly worn, re-bushing got them within 
heat gun range. In the end, the results were only approximate, but good 
enough.

hope this helps

Mike

David Nereson wrote:
>
> Some Acrosonics have wippens with “snap-on” bushings for the center 
> pins of the sticker. And the sticker has a 90-degree “L” at the top, 
> which sits atop the capstan screw.
>
> Sometimes, however, something is not straight and the “L” is angled 
> off to the side of the capstan. On a hard blow, the capstan (and the 
> tail end of the key) just gets forced up between two stickers and 
> won’t play the note. I’ve investigated the sticker and the center pin 
> holes/bushings appear to be bored straight, i.e., perpendicular to the 
> sides of the sticker, and the snap-in bushing in the wippen doesn’t 
> appear angled. Yet when the sticker is snapped in, it sits askew.
>
> I tried gluing a little sliver of wood to one of the birdseyes, on the 
> wippen tongue, to rotate the sticker around a little bit. But it 
> wasn’t enough.
>
> I s’pose I could heat the sticker with a heat gun and twist the heck 
> out of it, but it would take about a 30-degree twist to correct it.
>
> Any other solution? Surely this isn’t the only Acrosonic with that 
> problem. Three other keys (actually wippens) have the same ailment.
>
> --David Nereson, RPT
>