Rebuilding Pratt-Read 6-point Wind Motor
By Doug Bullock
[ Doug Vensel wrote in 180221 MMDigest:
> But I can't get things to line up after I recovered the pneumatics.
The problem with the double-pneumatic Pratt Read motors is those
pneumatics do not have hinges; at the hinge end they must be open.
Normally where the hinge is the pneumatics have a gap of about 3/8",
plus or minus. This makes each one look more like a wedge-shaped
accordion rather than a standard hinged pneumatic.
Recover these with a gap instead of a hinge and you should do well.
The pivot keeps them lined up and, without a hinge, all the pneumatics
should be able to align with the screw holes in the connecting board.
Doug L. Bullock
https://www.facebook.com/PianoWorldEnterprises/
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(Message sent Fri 23 Feb 2018, 16:19:35 GMT, from time zone GMT-0600.) |
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