ned
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| posted on 12/6/06 at 07:49 PM |
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second hand pillar drills..
looking for a pillar drill and would rather buy something solid and second hand than new, small and made in china.
There are a lot of 3 phase about, how easy are these to convert to single phase? new motor or converter box, what sort of price am i looking at and is
it worth the hassle?
also any tips on sites selling off second hand industrial and/or single phase stuff at sensible prices? or auctioneers in the south that do machinery
auctions?
cheers,
Ned.
[Edited on 12/6/06 by ned]
beware, I've got yellow skin
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Wadders
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| posted on 12/6/06 at 07:58 PM |
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Plans aplenty on tinterweb to Build a rotary phase converter. Mine cost me less than £50 to make and works a treat. However inverter phase converters
are so cheap now, its hardly worth the hassle, plus you get stepless speed control, (very handy) chap on here, sells inverters cheap
http://www.homeworkshop.org.uk/latest.html
3 phase gear is slowly rising in price as its so easy to convert now.
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mark chandler
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| posted on 12/6/06 at 09:20 PM |
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Get a few AC 250V 10uF oil filled capacitors off Ebay for a fiver, a three phase motor will present you with three poles to connect to, two go to the
mains, the third goes to the capacitors an either live or neutral (depends which way you want the motor to spin).
Start with a 10uF, if that fails to start the motor double up to 20uf (wire in parallel), keep going until it starts cleanly.
The capacitors make up the third phase, you do not need to overdo it or the motor will get hot. Fine for pillar drills, its only constant use you may
have an issue and need to sort out extra capacitors for a starter.
A decent meddings pillar drill will cost around £50 !
Regards Mark
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paulf
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| posted on 12/6/06 at 09:24 PM |
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Look for an old FOBCO drill , I have a pillar drill with no 1 morse taper spindle and tilting table .They are dearer than the cheap imports but you
should be able to pick one up for less than £100 and it is easy to change the motor as it is a foot mount motor fitted with 4 bolts.
Paul
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NS Dev
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| posted on 12/6/06 at 09:48 PM |
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was going to say, easiest to buy a new motor, a 2 or 3hp single phase one wont break the bank
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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paulf
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| posted on 12/6/06 at 10:02 PM |
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Ive got a 1/2hp motor on mine and it is ample for most jobs as long as the drill is sharp.
Paul.
quote:
Originally posted by NS Dev
was going to say, easiest to buy a new motor, a 2 or 3hp single phase one wont break the bank
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NS Dev
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| posted on 12/6/06 at 10:10 PM |
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good point! was getting muddled up with my lathe! My drill is 1/2 hp too!!!
Doh!
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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ned
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| posted on 13/6/06 at 06:25 AM |
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quote:
Originally posted by mark chandler
A decent meddings pillar drill will cost around £50 !
where from!?!
either of these look any good:
http://www.gandmtools.co.uk/cat_leaf.php?id=3264
http://www.gandmtools.co.uk/cat_leaf.php?id=3263
[Edited on 13/6/06 by ned]
beware, I've got yellow skin
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PaulBuz
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| posted on 13/6/06 at 12:38 PM |
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quote:
Originally posted by mark chandler
Get a few AC 250V 10uF oil filled capacitors off Ebay for a fiver, a three phase motor will present you with three poles to connect to, two go to the
mains, the third goes to the capacitors an either live or neutral (depends which way you want the motor to spin).
Start with a 10uF, if that fails to start the motor double up to 20uf (wire in parallel), keep going until it starts cleanly.
The capacitors make up the third phase, you do not need to overdo it or the motor will get hot. Fine for pillar drills, its only constant use you may
have an issue and need to sort out extra capacitors for a starter.
A decent meddings pillar drill will cost around £50 !
Regards Mark
This method will reduce the available torque from the motor by about 20%.
The main problem, however is the starting torque required.
It is normally used in very light applications which are further reduced through a reduction box.
[Edited on 13/6/06 by PaulBuz]
ATB
Paul
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Gav
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| posted on 13/6/06 at 07:27 PM |
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Just worth a look perhaps?
http://www.chesteruk.net/store/drills.htm
they also have motors on their site too
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ned
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| posted on 22/6/06 at 08:44 PM |
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just bought a 3 phase fobco star bench drill so any more info/tips on where to source single phase motors to fit it? where did you get yours paulf?
cheers,
Ned.
beware, I've got yellow skin
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David Jenkins
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| posted on 23/6/06 at 07:30 AM |
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Have a look if there are any electric motor rewinders in your town - I've always had good service from the small privately-owned companies.
They will often have some old motors lying around that you know will work when you rig one up.
I'd be surprised if you paid more than £20 for a scruffy but working example. Take the old 3-phase motor in and he can match up the base with a
1-phase example.
Otherwise, if you;'re feeling flush with cash, I believe Machine Mart will sell you a suitable motor - but it'll be a Chinese jobbie.
Personally I'd go for a second-hand one from a rewinders.
rgds,
David
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paulf
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| posted on 23/6/06 at 05:50 PM |
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I just used one I had lying around the workshop , machine mart would be a good source for a cheap motor or as suggested try a local rewinders who may
have a used one or will be able to supply a decent quality new one at a reasonable price.
My drill is also a fobco star and has been very good, a much better buy than a cheap import.
Paul.
Paul
quote:
Originally posted by ned
just bought a 3 phase fobco star bench drill so any more info/tips on where to source single phase motors to fit it? where did you get yours paulf?
cheers,
Ned.
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