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Thread: Am I mad
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9th March 2014, 03:45 PM #61
I'd be checking what the base frequency is first-mine was set to 400 out of the box. Does the motor hum?
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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9th March 2014 03:45 PM # ADSGoogle Adsense Advertisement
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9th March 2014, 05:54 PM #62I break stuff...
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I'm assuming everyone caught the drift (unless I've misunderstood something) that Welder is attempting to run his motor which is still wired 415v star off a 240v output VFD? Now I'm not sure what exactly happens when you do that, but I'm sure that there is a reason we're always digging the star point out of our motors...
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9th March 2014, 06:00 PM #63
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9th March 2014, 07:12 PM #64future machinist
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Well I reset the Vfd to factory setting and it works. I have stalled the wheel once but you can't really notice the decrease in power. I spent the afternoon making a diamond dresser for it.
BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE
Andre
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9th March 2014, 07:43 PM #65
Hi Andre,
Glad to see you got it sorted.
I was asking my son-in-law, ( the motor rewinder. ) he says the standard charge out rate for a star to delta conversion is 1 hours labour, and for the place he works at, that's $82.50 per hour. The actual job usually takes about 1/2 an hour.
Ray
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9th March 2014, 07:50 PM #66
Good to see it working. I would say though that unless you were taking a .010" cut or something as crazy that you should not stall the motor.
The offer still stands to come down and do it here when we can line it up.
Cheers,
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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9th March 2014, 10:08 PM #67Senior Member
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9th March 2014, 10:17 PM #68
Nope, half hour is plenty of time, they do a full rewind in around 4 hours. All internal joins are brazed with lpg/oxy, fibreglass sleeve, nylon laced and varnished. When you have a workbench set up with everything at your fingertips, and you've done it a hundred times before, you get pretty good at it.
Ray
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24th April 2014, 10:40 AM #69
Andre is visiting on Saturday so we can pull the start point. I have marked a likely starting point on the photo. Anyone spot anything i'm missing?
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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24th April 2014, 12:11 PM #70
Looks like a good starting point Ew. This one seems to have lots of internal individually sleeved connections. Can you see why?
Cheers,
JoeCheers,
Joe
9"thicknesser/planer, 12" bench saw, 2Hp Dusty, 5/8" Drill press, 10" Makita drop saw, 2Hp Makita outer, the usual power tools and carpentry hand tools...
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26th April 2014, 09:25 AM #71future machinist
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Well I am headinv up to Ueee's place now. Should be interesting as I lost his adress so hopefully I get there :doh:
BETTER TO HAVE TOOLS YOU DON'T NEED THAN TO NEED TOOLS YOU DON'T HAVE
Andre
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26th April 2014, 09:30 AM #72SENIOR MEMBER
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I can PM Ewans address to you if you like Andre.
Phil
PM sent anyway
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27th April 2014, 01:06 AM #73
I finally got out of bed this morning in time to send Andre my address....
Anyway, the conversion was plain and simple, not sure why the rewinders wanted so much. The spot i circled was the one, simple cut the wires out, split and then add the new wires and cover with woven spaghetti. Some twine and lacquer and it was done. The reason the rewinders may have been touchy about it is the motor and spindle housing/spindle are all one piece. You cannot take the rotor out without pulling the main spindle bearings out etc etc. Not that the rotor needed to be removed to do it.....
Cheers,
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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27th April 2014, 12:29 PM #74future machinist
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Well I got the motor put back on,dressed the wheel and had a test grind there's a 0.004 mm deviation.
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27th April 2014, 01:07 PM #75
Hi Andre,
Good to see it's up and humming along.. you might want to take a lick off the chuck and you should get that last 4 microns with a bit of care.. cleaning is important...
Ray