[SEL] white metal for bearings (Babbitt)

[Peter Lowe]

Hi All
I know we have been through this before, but I just want to clarify a few 
points.

1. What is the tolerance between the crankshaft and the bearing ID. The 
crankshaft is 1 1/2" dia. and the bearing is about 4 1/2" long. How many 
thou. do I allow.?
2.  The oil groove in the bearing, should it be on top of the bearing where 
the oil comes through and is there a need for one on the bottom. The 
bearings I took out of my vertical R&V also have a groove around the end, I 
guess to hold the oil before it finally comes out, if it does. Would you try 
and direct oil that comes to the bottom back into the engine via a spiral 
directional groove at the bottom of the bearing. You might say, who cares it 
will not be run that often, but it is an exercise for me in machining also.
http://www.oldengine.org/members/plowe/rv-engines/my_main_bearings.htm
There will eventually be a complete restoration guide for the vertical R&V 
when I finally think of the format I want to use at:
http://www.oldengine.org/members/plowe/rv-engines/my_vertical_restoration.htm


The email reply below was from a bearing company in Victoria, Oz, I bit 
pricy on their metal or am I out of touch $$$$?

Regards
Peter Lowe
R&V Engine Registrar
Australia
Ph: 61-266453455
http://www.oldengine.org/members/plowe/rv-engines/rvpage.htm
http://www.oldengine.org/members/plowe/rv-engines/rv-register.htm



>>Hi Peter
>
> Our recommended white metal is a stock line called DSL, This is most 
> suitable for high & low speed applications & high load factors.
> Composition:
> SN - Tin           88.20%
> AG - Silver       0.10%
> CD - Cadmium 1.00%
> CU - Copper    3.05%
> NI -  Nickel      0 .15%
> SB  - Antimony 7.50%
>
> More important is that the oilways and clearance are correct.
> If the finished bush is 1KG I would suggest you make allowance for OD, ID 
> & length finish machining.
> Price per Kilo is $42.50 plus postage.
>
> Regards
> Ian Hill.