March 12, 20188 yr Popular Post comment_143196 some gozillion years ago I was given a twin state Sgt Welsh rotary vein vacuum pump that fell of a truck. No really it fell off the truck & got damaged ( just the belt shroud) but there was an insurance claim and this one was unclaimed so the shipper gave it to me. And a decade or so later I'm finally trying to put it to use. I got a small air tank and welded bungs to it so I can run 1" piping to it. It is the vacuum reservoir in case of power failure. Then mounted it and the pump together around a corner on the other side of a wall and ran 1" copper to the lathe with a parker needle valve and a vacuum gauge and LOOKY MA I can hold a great vacuum and even lower the hold to what ever HG I want with the needle valve . AND When I shut it off it holds the vacuum for a good long time. The reason for the large piping is over a long run ya gotta have a big pipe a small one just doesn't work well Report
March 12, 20188 yr comment_143200 12 minutes ago, Cliff said: The reason for the large piping is over a long run ya gotta have a big pipe a small one just doesn't work well Gives more volume too. Just like air pressure more volume never hurts. I like the you set-up. Report
March 12, 20188 yr comment_143208 Looks like a nice set up. What is your intended use? A vacuum chuck for your lathe? Steve Report
March 12, 20188 yr comment_143213 Cool! Are you still using the generator? I see there's another bit of snow headed your way. Report
March 13, 20188 yr comment_143245 Nice work Cliff...pretty good pump to pull & hold 27" especially for the price you gave. Edited March 13, 20188 yr by Grandpadave52 Report
March 13, 20188 yr Author comment_143302 10 hours ago, Fred W. Hargis Jr said: Well done. Like Steve asked: what's the intended use? to hold things on the lathe and any other vacuum need in the shop like laminating. Report
March 13, 20188 yr Author comment_143311 I rather like my vacuum coupling. It's an industrial bit o' kit I got for next to nuthin' on the flea bay. I can go pretty fast - - not mind you that I'd trust vacuum with high RPMs. I welded up a rig to go on the coupling to prevent it from spinning. Apparently it is overkill and unnecessary because the hose is stiff enough to keep it still the_pump_vid.mp4 vacuum_at_1241_RPM.mp4 Report
March 14, 20188 yr Author comment_143339 1 hour ago, lew said: Looks like a mighty fine setup to me. Thanks, Imagine my surprise when my bung welding held vacuum. Report
March 14, 20188 yr comment_143347 Nice Cliff. Love the tank. Don't see that in too many set ups. Report
March 14, 20188 yr Author Popular Post comment_143409 well looky a bowl gosh darn the blasted thing works. Ya know multiply those 15 pounds per sq inch really add up to substantial force~!!! I played with pulling that sucker off all through the pressure range and it was unmovable without destroying the bowl way down to a lousy five inches of mercury. I think I'll like this gizmo AND THERE's a VIDEO but when up load them they only show as a link. bowl on vac chuck-01.mp4 Edited March 14, 20188 yr by Cliff Report
March 14, 20188 yr Author comment_143417 here is a vid of the coupling I took the fixture off that I had on it. the hose seems plenty stiff enough to hold it under power The pipe thread into that aluminum disk is a left hand thread. Hard to find a left hand pipe tap. If you need one I got one you can borrow so long as it won't be used in steel. I turned the aluminum disk so that it's double as a pulley for my slow speed rig. vacuum coupling.mp4 Edited March 14, 20188 yr by Cliff Report
March 15, 20188 yr Author comment_143529 the coupling There are plenty for cheap sold as rotary unions https://photos.smugmug.com/Tools-I-made-or-Purchased/i-HgWhLPB/0/c69641d8/1920/vacuum coupling-1920.mp4 Report
March 15, 20188 yr comment_143541 This is a good thread and I'm glad you shared it, have you got a link to buy those unions? Steve Report
March 17, 20188 yr Author comment_143823 On 3/15/2018 at 4:16 PM, Steve Krumanaker said: shared it, have you got a link to buy those unions? I got it on the flea bay https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313.TR2.TRC0.A0.H0.Xrotary+union.TRS1&_nkw=rotary+union&_sacat=0 Report
March 17, 20188 yr comment_143828 48 minutes ago, Cliff said: I got it on the flea bay https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2380057.m570.l1313.TR2.TRC0.A0.H0.Xrotary+union.TRS1&_nkw=rotary+union&_sacat=0 Thank you sir!! Report
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