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About dikman
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dikman started following Simple cheap speed reducer, Singer Electric Transmitter how old and how save to use ?, Cross draw western rig with progress pics and and 6 others
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Singer Electric Transmitter how old and how save to use ?
dikman replied to Oldiesfan's topic in Leather Sewing Machines
Not sure about that model but older motors often ran in oiled bushings, not bearings, which is why they have oil caps. If it's working ok I would leave it alone, as the wiring insulation gets brittle with age and pulling them apart can cause (dangerous) problems. I had a couple of lovely old Singer motors that I dumped because I considered them electrically dangerous. -
Mine came fitted with a standard domestic needle but it wasn't hard to readjust for 135x16 needles.
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I do it like Dwight, the trick is to keep it damp, as he said. It's much easier than stitching, quicker and no stitches to possibly wear and break.
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I found a similar product here in Oz. By comparing the MSDS of Mop & Glo with what was available I found a local equivalent. It can be sprayed or brushed on and I've also used it over paint on model kits.
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Yes, I know, I thought it would be a great idea for a bench grinder but when I did more research I found that it's not a good way to run a motor. If it was that simple people wouldn't bother with changing their lathe/belt grinder motors to 3-phase in order to use a VFD. Unlike a 3-phase motor a single phase loses torque and overheats as the speed is reduced, making it very inefficient. As Northmount said.
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I agree. While it can be done the question is why bother? Servos provide a much neater, relatively inexpensive solution.
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Hmm, being an electrician I would have thought you'd be aware that VFD's are used with 3-phase motors, all the clutch motors I've come across have been single phase. Toxo is right.
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Still having same problem please help
dikman replied to bigsig11010's topic in Leather Sewing Machines
No, it shouldn't hit the needle! The timing looks like it's out. The hook should be aligned with the scarf (recess) in the needle., the needle bar is too high. -
Sad. Another one gone too soon.
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That's a nice approach, fairly simple and makes for easy adjustment.
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Yep, horses for courses, as they say. Hmmm, soft start on a domestic machine?
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I agree with Gymnast. You refer to them as hobby saws. Maybe, but by definition they are a table saw (a table with a saw mounted in it), there is no rule that states a table saw must be large and have an induction motor. And these smaller table saws inevitably have universal motors, which lend themselves to easy speed control.