[TowerTalk] aircraft bearing

[Rex Lint]

They used Lignum Vitae for the blocks on old sailing ships, the ones without
wheels, just multiple holes, for the rigging of the tall ships.

De K1HI

Rex Lint 
26 Brek Dr.
Merrimack, NH 03054
PH:   603-860-7651    FAX: 603-882-6612

-----Original Message-----
From: towertalk-bounces at contesting.com
[mailto:towertalk-bounces at contesting.com] On Behalf Of Michael J. Castellano
Sent: Sunday, July 31, 2005 12:42 AM
To: towertalk at contesting.com
Subject: [TowerTalk] aircraft bearing

I'll go with John W0UN on this one. 

Been using a piece of lignum vitae (sp?) for years on a Telex LP-1002 log
periodic. last inspection indicates I'll only get around another 50 years
life out of it at the crazy rotation speed of 1 rpm!

lignum vitae is what they used to make bowling balls out of back in the old
days...not sure what they use now.
 
I'll bet a nice piece of mahagony would work just as well, its hard and
stable (won't warp). 



Mike KM1R