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Old April 28th 18, 03:06 AM posted to rec.aviation.soaring
Karl Striedieck[_2_]
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Posts: 146
Default Tapered pins (again)

I had a machinist make tapered inserts for the 27 pins. The pin is hollow and was heated before the cooled,tapered insert was inserted.

As noted, as built there is practically no pin protruding beyond the spar when inserted and not much space between the pin end and the fuselage spar box. A small amount of Dremel action on a non load-bearing part of the spar box allows enough room for the lightly longer, tapered pin.

The pin handle is removed (four screws) before the pin is chucked in a lathe and the blunt tip cut away.

As delivered, the relatively blunt end of the original pins require precise alignment for pin insertion, but with the tapered ends they can be shoved in with only casual attention to alignment.

This solution eliminates extra gizmos such as pry bars, shovel handles or nylon tools.

Anyone interested in pics of the pins and spar box grinding can get same from: karls at uplink.net