A Moderated Mechanical Music Discussion Group for Collectors, Technicians, Dealers, and Fans

Announcement: Spring Fundraising Drive In Progress

Please visit our home page to see this and other announcements: https://www.mmdigest.com     Thank you. — Jody

MMD > Archives > August 2025 > 2025.08.04 > 03Prev  Next


Autopiano Action Pneumatic Span
By Howard Kohlbrenner 

I am rebuilding an Autopiano double-valve three-tier player action
that was previously rebuilt. I'm finding pneumatic spans between
1-1/8" and 1-1/4". The question is, what is the correct span?

Howard Kohlbrenner

(Message sent Mon, 4 Aug 2025 12:14:57 -0700 , from time zone -0700.)

Key Words in Subject:  Action, Autopiano, Pneumatic, Span
Enter text below to search the MMD Website with Google

Please Support Publication of the MMD with your Generous Donation
No PayPal account required

 

SSL Certificate
by
Let's Encrypt