James Roadman Instrument Repair

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Updated: 6 min 15 sec ago

Rewinding DeArmond Hershey Bar Pickups

Tue, 02/20/2018 - 05:17

I had these DeArmond Hershey Bar pickups come into the shop for rewinding recently.  These pose a couple of challenges – the covers are riveted to the pickup and the coil is wound around the magnet which is unsupported on top.

I am sure the proper rivets are commercially available but I wasn’t able to figure out where to get the proper ones.  The world of rivets is more varied than one might expect.  Considering how often I do this repair it was just easier to make them.  I had some 3/16 nickel rod on hand it is not too difficult to machine them on the lathe.

To wind the coils I made a temporary support that was bolted onto the bobbin with cellophane tape in between.  I was able to wax pot the coil to make it more solid before removing the support.

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