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

Announcement: End-of-Year Fundraising Drive In Progress

Our End-Of-Year Fundraising drive is in progress. If you haven't contributed to the operation of the MMD in the last 12 months, this would be a great time to contribute. There's a PayPal link at the bottom of each page on the website.

If you aren't sure when you last contributed, please send me a note using the contact form at the bottom of this page and I'll look you up in my records.

Thank you for your generous support!

P.S. While your support is needed and appreciated, you do not need to contribute to be a subscriber. If you have subscribed and aren't receiving your Digest, please use the contact form at the bottom of the page and let me know. Thanks!

MMD > Archives > March 2006 > 2006.03.27 > 12Prev  Next

Valve Washers of Patent Leather
By Matthew Caulfield

I read with interest Gary Peterford's report on his experience with
patent leather valve facings, because I had purchased a couple of
PPCo's patent leather discs to see how they behaved in use.  The ones
I received were black patent leather, attractively (?) stippled with
green spatters.

The patent finish of the leather seemed to me to provide too much
"grab" onto the valve seat.  So I decided not to risk using them,
on the theory that a properly seating poppet needs to have some wiggle
room to find its optimum seal.  Also the slightly raised spatters were
of some concern.

Matthew Caulfield
Irondequoit, New York

(Message sent Mon 27 Mar 2006, 14:38:05 GMT, from time zone GMT-0500.)

Key Words in Subject:  Leather, Patent, Valve, Washers

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 1995-2017 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

. .