Mechanical Music Digest  Archives
You Are Not Logged In Login/Get New Account
Please Log In. Accounts are free!
Logged In users are granted additional features including a more current version of the Archives and a simplified process for submitting articles.
Home Archives Calendar Gallery Store Links Info

Our End-Of-Year Fundraising Drive is in progress. Please visit out home page to see this and other announcements:     Thank you. --Jody

MMD > Archives > April 1997 > 1997.04.30 > 09Prev  Next

Band Organ Crankshaft Speed
By Fritz Gellerman

My North Tonawanda Model 188 had a gearmotor installed when I got it.
The organ is more or less equivalent to a Wurlitzer 146 and has the
Wurlitzer duplex roll mechanism installed.  I presume the crankshaft
speeds would be the same.

The gearmotor develops 1/2 hp and runs at 90 rpm.  This would appear to
be the ideal crankshaft speed, but the 1/2 hp motor had marginal torque
so I reduced the speed to about 75 rpm with pulleys.  There was still
enough adjustment left in the roll drive mechanism to run the rolls at
the right speed.  If I was buying a new motor I would get a 3/4 hp 90 rpm
gearmotor and use a 1:1 pulley ratio.

Fritz Gellerman

(Message sent Tue 29 Apr 1997, 14:11:45 GMT, from time zone GMT-0400.)

Key Words in Subject:  Band, Crankshaft, Organ, Speed

Home    Archives    Calendar    Gallery    Store    Links    Info   

Enter text below to search the MMD Website with Google

CONTACT FORM: Click HERE to write to the editor, or to post a message about Mechanical Musical Instruments to the MMD

Unless otherwise noted, all opinions are those of the individual authors and may not represent those of the editors. Compilation copyright 1995-2018 by Jody Kravitz.

Please read our Republication Policy before copying information from or creating links to this web site.

Click HERE to contact the webmaster regarding problems with the website.

Please support publication of the MMD by donating online

Pay via PayPal

No PayPal account required

Translate This Page

. .