Pouring Babbitt using a Hempy cooper jig

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Randall strickland
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Pouring Babbitt using a Hempy cooper jig

Post by Randall strickland » Fri Apr 08, 2022 7:14 am

https://www.youtube.com/watch?v=fd3Hdqq6GSI&t=79s
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Harry Lillo
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Re: Pouring Babbitt using a Hempy cooper jig

Post by Harry Lillo » Fri Apr 08, 2022 10:07 am

Thank you for sharing this Randall.
Can you help me understand the purpose of spraying the jig with what
I assume was water after pouring the babbitt?
Harry Lillo
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Rich Eagle
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Re: Pouring Babbitt using a Hempy cooper jig

Post by Rich Eagle » Fri Apr 08, 2022 11:41 am

It is fun to see that after hearing about it for years.
Thanks
Rich
When did I do that?
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Dan McEachern
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Re: Pouring Babbitt using a Hempy cooper jig

Post by Dan McEachern » Fri Apr 08, 2022 2:23 pm

He is not spraying the jig if you look closely, he is spraying the main web under the fixture to cool the block and chill the babbitt.
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Charlie B in N.J.
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Re: Pouring Babbitt using a Hempy cooper jig

Post by Charlie B in N.J. » Fri Apr 08, 2022 8:00 pm

Explain the peening please.
Forget everything you thought you knew.
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Rich Eagle
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Re: Pouring Babbitt using a Hempy cooper jig

Post by Rich Eagle » Fri Apr 08, 2022 8:24 pm

"peening or compressing the babbitt by hammering is often specified.... to compress the babbitt in a bearing and harden it so that it will give better service."
https://www.911metallurgist.com/babbitted-bearings/
When did I do that?
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Erik Barrett
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Re: Pouring Babbitt using a Hempy cooper jig

Post by Erik Barrett » Fri Apr 08, 2022 9:05 pm

When I pour these I pour from both sides using left and right hand ladles. The quicker you fill the mold the less chance of a cold shut. The water is sprayed to chill the babbitt as quickly as possible which preserves the quality of the metal. I have a helper ready with the squirt bottle handy. If there is a leak in the setup often it can be chilled with water and the pour salvaged. My molds are patterned after KR Wilson tooling but I use a smaller mandrel to give more room to bore for undersized cranks.
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Mark Gregush
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Re: Pouring Babbitt using a Hempy cooper jig

Post by Mark Gregush » Fri Apr 08, 2022 10:29 pm

I under cut my KRW arbor for pouring and have tried pouring with the block vertical. That seemed to work ok. Some people chill some don't.
I know the voices aren't real but damn they have some good ideas! :shock:

1925 Cut down pickup
1948 Ford F2 pickup
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Dan Hatch
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Re: Pouring Babbitt using a Hempy cooper jig

Post by Dan Hatch » Sat Apr 09, 2022 11:24 am

To quote someone famous on here. “If you don’t peen the Babbitt, the crankshaft will do it for you.”
That will result in a loose bearing. Dan
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