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#11
02-03-2021, 10:58 AM
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I am hoping to go with the K profile because of ease of availability at any car parts store or auto dealer. I may be machining another one, but I have other things on the fire at the moment so trying to bypass that.
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Gerry You got freedom of speech, if you don't say too much. Aaron Neville. The virtue is always a cover for the sin. That's the key to understanding the modern left. Whatever they're accusing you of doing, they are doing themselves but more enthusiastically. And that's definitely the story of Justin Trudeau. Tucker Carlson 
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#12
02-03-2021, 12:56 PM
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If you have issues finding shorts of pipe close to the right dimension, check with your local oilfield supply. Casing couplings can be bought separate from the pipe bodies.... in the larger sizes, 5/16" - 3/8" wall thicknesses are common measured from the thread root to OD. Just checked my old (35 years) Browning catalog. That catalog includes a poly vee section, but jumps directly from J profile to L and skips K. Another thought.... every pumpjack has at least a pair or triplet of B or C section vee belts driving the gearbox. The sheaves/pulleys are changed routinely to change the speed of the jack. Most supply stores will have sources for double and triple groove pulleys. Whether or nor you can afford oilfield pricing is another issue.
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Design to 0.001", measure to 1/32", cut with an axe, grind to fit.. 
Last edited by camdigger; 02-03-2021 at 01:19 PM.
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#13
02-03-2021, 04:11 PM
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Would there be such a thing as a coupling that was 11" OD?
Would that be for 10" pipe...do they even use that size?
__________________
Gerry You got freedom of speech, if you don't say too much. Aaron Neville. The virtue is always a cover for the sin. That's the key to understanding the modern left. Whatever they're accusing you of doing, they are doing themselves but more enthusiastically. And that's definitely the story of Justin Trudeau. Tucker Carlson
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#14
02-03-2021, 05:43 PM
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Get a piece of dom tube. Probably be $150 for a foot, or more
 Sent from my iPhone using ShopFloorTalk
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Brian You don't know what you don't know.  "It's what you learn after you know it all that counts." John Wooden
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#15
02-03-2021, 05:49 PM
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Quote:
__________________
Design to 0.001", measure to 1/32", cut with an axe, grind to fit..
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#18
02-04-2021, 07:28 AM
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I am no help on the pulleys,but i buy belts from "the V Belt Guys"
They have all kinds of belts and they have great prices. I make an alternator kit to replace a DN50 on a Series 60 engine in buses. I needed a belt,12 rib that the auto stores could not supply. V belt guys have them in stock for 20 bucks or so. I have 60,000 miles on one of those belts now,no wear to be seen,so the belts are good stuff.
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#19
02-04-2021, 06:15 PM
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A post by Three Piece triggered a thought. Could you machine an old compressor flywheel to serve as your drive pulley? I 'm guessing this is for the Witte to run a generator head so it's low RPM.
__________________
"Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery." Winston Churchill
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