[TheForge] babbit bearings

[Ralph Sproul]

	Tod, Roger's offering some good info as I watched a tape similar years ago
and it was very informative - I'm sure Roger has just put it to DVD for
convenience.  You could watch a DVD and print out an article on it with
preheats and sequence all written out and just add notes from the DVD where
they apply and go for it.  I'll bet between the two resources you'd approach
it with a lot more confidence........and for $7 it doesn't sound like you
could go wrong.

Ralph

-----Original Message-----
From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net]On Behalf Of Roger R Degner
Sent: Monday, January 16, 2006 1:21 PM
To: 'Sponsored by ABANA'
Subject: [TheForge] babbit bearings


The UMBA library has a DVD-R with Fred Craylor rebuilding a 25# LG
including pouring the Babbitt
Cost is $7 shipped and a full list and details are at www.umbaonline.org
then on the left click on library.

Roger R Degner
	Last winter I hadn't done any babbit pours for about two years -
so I printed out the article and followed the process I'd written up the
last times I'd done them while it was fresh in my mind (another great
example of why you should document your work!).......and did two power
hammers in one
Saturday as far as preping, rough shiming, and pouring the babbits.   So
your hammer is really only a day away from babbit bearings done - then
scrapping & fitting the bearings is another days work to get the shaft
to clearance for oil and make contact on about 80% plus of the surfaces
in the housing and caps with the proper shims (and scraping).  To fit
the shaft - spray the babbit with bearing blue or some folks call it
blue dykem.  Set the shaft in(dry), turn it, then scrap away the high
spots and try it again.
	This is also another case if you go to far........melt it out
and try again - so there is nothing you can really screw up so terrible
you can't
fix it with another day or two's work.   If you go slow and keep
fitting,
blueing, and scraping - you'll find the shaft will spin freely and when
you add oil it's amazing how smooth it will roll for you.


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