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MMD > Archives > May 2004 > 2004.05.25 > 07Prev  Next

Determining Pipe Organ Blower Size
By Carl Zwanzig

I'm starting to work on my parade organ project after leaving it
sit for a while.  The current problem is figuring out how much air
do I need, thus how big a blower.  The first version will only have
a short rank (48 notes) of a stopped flute, probably operating at
about 4-5" pressure(*).  Later versions will have more ranks.

I've seen various surplus blowers from copy machines and tape drives
in the local junk shops, they're usually good for 20-30 cfm at 10".
Is this enough?  How does one figure air consumption in general?

* I'm going to measure the mouth on the pipes to figure the
likely design pressure based of Johan Liljencrants' chart (at  Of course, I'm open to
other suggestions.

Carl Zwanzig

(Message sent Tue 25 May 2004, 19:55:02 GMT, from time zone GMT-0700.)

Key Words in Subject:  Blower, Determining, Organ, Pipe, Size

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