Re: Sewing Machine Motor w/foot pedal?
Hi Bob, It's really far simpler than all that, at least for Unimats and similar sized machines. Yes, series wound universal motors have poor speed characteristics, but are adequate for these little
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Keith S. Angus
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#56873
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Re: Sewing Machine Motor w/foot pedal?
This shows the different world we are looking at here. This motor is a bit smaller than the usual U90 and similar, but is rated at 3 kW! It is also quite expensive compared to the common aero/marine
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Keith S. Angus
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#56872
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Re: Sewing Machine Motor w/foot pedal?
Hello, just in case, there are folks out there, that would like to get into the experimentation field of using a brushless motor for radio control hobby use, for powering their minilathe, here you
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Avio Mac
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#56871
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Re: Sewing Machine Motor w/foot pedal?
Right then - keep it simple. The 24 V DC motors we keep talking about are fine for the job. Power in the range 100 to 150 Watts is fine. I was running my SL on 130 W, and that worked nicely, much
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Keith S. Angus
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#56870
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Photo Tailstock updated
#photo-notice
The following photos have been updated in the My upgraded Unimat SL ( /g/Unimat/album?id=266860 ) album of the [email protected] group. * Tailstock (
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[email protected] Notification <noreply@...>
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#56869
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Re: Sewing Machine Motor w/foot pedal?
I just want a quiet, controllable, small motor capable of zero to 4000 rpm or so. I have a 90 DC controller that I could use but don¡¯t know how to match it up to a motor. I am not knowledgeable in
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OldToolmaker
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#56868
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Re: Sewing Machine Motor w/foot pedal?
We are talking a lot, and I am not sure that there have been definitive answers, at least that I understand. Who here has a Unimat currently operating with a normal sewing machine motor? Not some
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John Hutnick
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#56867
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Re: Sewing Machine Motor w/foot pedal?
Well, the other option that has been discussed before, and never brought to a conclusion, is to use a brushless motor from the radio control field. They pack a lot of power into a small volume.
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Keith S. Angus
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#56866
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Re: Sewing Machine Motor w/foot pedal?
Hello, BLDC motors and its servo-drives are a more expensive alternative solution to replace the original motor on a mini-lathe. However, their higher costs is plenty justified, if you plan on taking
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Avio Mac
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#56865
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Re: Sewing Machine Motor w/foot pedal?
I was hoping to find a small BLDC motor and speed control. ?Maybe something similar to the 500 watt BLDC minilathe motor but smaller to suit the DB 200. -- http://www.homemadetools.net/ forum/?OFF-
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OldToolmaker
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#56864
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Re: Sewing Machine Motor w/foot pedal?
Hi Gang: I had some shaded pole gear motors that I needed to reverse rotation on like this one: AC Gearmotor 230 Nameplate RPM 5.8 RPM Max. Torque 35.0 in-lb Enclosure Open Roll over image to zoom.
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Carl
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#56863
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Re: Sewing Machine Motor w/foot pedal?
In essence you need to reverse the wires to the brushes, OR the wires to the field,whichever is simpler. If you reverse both you will be back to CCW. If you can conveniently bring the wiring out to a
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Keith S. Angus
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#56862
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Re: Sewing Machine Motor w/foot pedal?
Hi, it happens that very recently I was wondering just your same questions, regarding universal type motors and how to reverse its direction of rotation. Its seems to be be very possible and easier
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Avio Mac
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#56861
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Re: Sewing Machine Motor w/foot pedal?
I would like to have a circuit which ramps up to the preset working speed rather than being a sudden jerk - just a half second would do. Resistive braking would also be nice, but would need to be more
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Keith S. Angus
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#56860
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Re: Sewing Machine Motor w/foot pedal?
I use a foot pedal speed control with the bigger Consew motor, in the back, to run the Unimat size lathe here. I like it a lot, I just set the top speed for whatever I¡¯m doing using buttons on the
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Clark Panaccione
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#56859
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Re: Sewing Machine Motor w/foot pedal?
Hate to be a downer, but that VFD doesn't include the keypad you need to program the VFD. Nor a manual on how to program it. Gotta admit I didn't look very hard, but I didn't find a manual for that
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Bill in OKC too
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#56858
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Re: Sewing Machine Motor w/foot pedal?
That motor is still a bit big for the standard motor bracket. It also has ventilation holes, so it will eventually get swarf inside it (especially? steel) and get jammed. But the biggest problem is
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Keith S. Angus
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#56857
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Re: Sewing Machine Motor w/foot pedal?
Hi Gang: Here is a smallish motor for $20:
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Carl
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#56856
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Re: Sewing Machine Motor w/foot pedal?
A quick look here shows a 35 W motor, the smallest three phase with the higher 2600 rpm (50Hz) output, as being bigger than the 100 - 150 W DC motors and it would certainly not fit in the available
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Keith S. Angus
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#56855
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Re: Sewing Machine Motor w/foot pedal?
Have you searched in this motor manufactures database? Check out https://www.globalspec.com/industrial-directory/smallest_3-phase_induction_motors It may require a little searching but they have ALL
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Paul McDaniel
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#56854
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