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MMD > Archives > September 2004 > 2004.09.09 > 03Prev  Next


Welte Autopiano 4-Pneumatic Tracking System
By Tim Gautreaux

Greetings.  I'm reassembling a Welte Upright (Milton) and have a
question about the tracking (shifter) pneumatics.  Welte used the
Autopiano stack.  Usually a two-pneumatic shifter was used on an
Autopiano action, but in Weltes they were four-pneumatic units.

My question is: What was the purpose of the little pneumatics mounted
between the main shifter pneumatics?  How did they contact or affect
the larger pneumatics?

When I dismantled the unit some time ago I noted that the small bellows
assembly might have had some parts taken off or been rendered irrelevant.
If someone has a frontal image of a properly assembled one it would help.

Thanks in advance,

Tim Gautreaux
runner@i-55.com.geentroep [delete ".geentroep" to reply]


(Message sent Thu 9 Sep 2004, 20:54:57 GMT, from time zone GMT-0500.)

Key Words in Subject:  4-Pneumatic, Autopiano, System, Tracking, Welte

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