I would make the assumption that they are both for noise and sacrificial.
Both of mine have been replaced with aluminum gears, and I think that there
is only one or two fiber gears in the train. you may also want to visit
http://groups.yahoo.com/group/Sheldo...yguid=75282800

There is the group dedicated to the Sheldon's. There is also a good
write-up on Sheldon's at the http://www.lathes.co.uk/sheldon/index.html
site.

lg
no neat sig line

wrote in message
oups.com...
Thanks for the quick replies.
What is the reason for the fiber gear(s)? Are they "sacrificial" parts?
Can you get replacements for them, if they are damaged?
Are all of the gears fiber, or just one in the train?

I am going to look at this tomorrow. Anything else I ought to look at?


Thanks very much for the replies!

-AL