[SEL] Pouring Babbitt..revisited

[Richard Strobel]

Thanks for the info JB.  The book I have doesn't mention heating up the 
shaft so will try that next pour.  The second pour on the cap went better 
except for a void about half the size of a jelly bean but at least it made 
it all the way to the ends.

  Pouring is no problem as this bearing cap already has a large oil 
reservoir.  I'm sure you know the type.

  IR thermometer shows 143 on the pulley bearing and 120 on the blade 
bearing.  Will cheat and get out the Plastigauge now.  Probably strive for 
~.005 on an 1 1/2 inch shaft.

Catcha later and thanks again!
Rick
PS: Ya'll might be careful when tighting bearing caps with ears.!!! I 
already broke the bolt ear off one cap at 60 ft. lbs.  Lucky I had another 
one.


----- Original Message ----- 
From: <jbcast at charter.net>
To: "The SEL email discussion list" <sel at lists.stationary-engine.com>
Sent: Friday, November 19, 2004 11:33 AM
Subject: Re: [SEL] Pouring Babbitt..revisited


>
> >   Howdy all;
> > Well I'm getting my first on hands experience pouring babbitt for the 
> > saw
> > arbor bearings on the sawrig.
> >
> >   Should I leave the ends partially open so the trapped air can escape 
> > or
> > just dam them air tight?  After a couple pours the babbitt in places 
> > doesn't
> > want to make it all the way to the dams.
> >
> >
> >   Should I heat the shaft also?  I'm heating the babbitt until it chars 
> > a
> > stick.  The casting until I'm sure all the moisture is out.
> >
> > Appreciate any advise and thanks for the threads over the years!!!
> >
> You have to have an in for the babbit and an out for the air. Try to heat 
> the shaft as well as the casting. Form a resrvoir on the pouring side to 
> give it a head little pressure, pour it fast.
> J.B. Castagnos
> Belle Rose, LA
>
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