After The Tinning Part Two
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- Опубліковано 15 вер 2024
- After tinning the shell of a Babbitt bearing, I share my set-up / process to pouring the upper half cast iron shell that uses a thin thickness of Babbitt as the bearing. Just like the 5-inch bearing we re-poured last week this 6-inch bearing is for a marine shaft. One other difference between sizes is this run in an oil bath versus the other being a grease lubrication.
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Made in China is a warning!
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Yes, as long as the shell is tinned and you have a good bond between the babbitt and the shell you'll get a nice "ring" out of it. We used to sonic - check bearings with a transducer and scope before either taking a skim cut on the bearing and tigging it up or if it had no bond we would machine it all out and spin-cast it. You have a nice bond on that shell! The bond is what transfers the heat from the babbitt to the shell while in use. Keep these videos coming. It's a lost art.
Keith, When I was in the Navy in Groton, CT we referred to that waxy putty as monkey shit, too. We used it to seal electrical connectors and cable penetrations through bulkheads. It was a common reference in those days. Just like tattoo parlors, strip joints and locker bars outside the main gate of most Navy bases, that reference will likely soon be lost to history.
8:22 Reminded me of an experience at Benihana, a Japanise Sushi and Steakhouse restaurant. The Chef would provide all kinds of hammering entertainment while the food cooked. All you had to do was flip the hammer around and, crack an egg..
Shop talk is what it is. My Dad was a Marine in Vietnam. Holy #4%6 the stuff that came out of that guys mouth !!
Sounds like he learned from some of the best guys around!
Our mechanic was a U.S. Marine vet who had fought at Guadalcanal. He was a good mechanic, and a world-class curser. I learned inter-syllable cursing from Sam.
E.G.: Thirteen becomes thir-f^^^ing-G**D***-teen!
Bom trabalho amigo Keit,h!!!Acompanhando!!!
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Yeah, metal 'ASMR'!
Short n Sweet Awesome ...
I have a question for you Keith, how many pounds of Babbitt did you use for this entire job? Seems like a bunch when you see your crucible full, and that’s a big lead pot.
I think it was less than 50 LB's, back on the double bearings with smaller bores but thicker walls took over 50 LB's.
Ok, I have a second question after watching all these videos from this series, I watch you pour your excess Babbitt into the smaller molds after the pour is done, wouldn’t the Babbitt melt quicker if you left it in the crucible? Seems like it would have more contact with the pot and the initial melting would happen faster without all the air gaps. Thanks for sharing!
It may be or not be faster melt, but having ingots to weigh and know the quanity your going to melt or store, more of a benefit