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Looking for a motor

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bob minchin - 29 Mar 2009 19:03 GMT
Gents,

For the last 30 years I have been running my ML7R on a DC motor to get
speed control in the days before semiconductor advances allowed the
cheap production of 3 phase inverters. I'd like to convert to such an
inverter fairly soon.I've got inverters in stock but I'm looking for a
dual voltage 3/4 horse, 4 pole (1425rpm) three phase TEFC motor
Ideally a foot mount or combined foot/flange but even a flange only
mount would do as I can make a mount for it.
Ideally one in the south of UK would be good but prepared to collect
from midlands say (if my passport has not run out lol)

More than happy with a second hand one in exchange for a couple of beer
vouchers.

Anyone got anything taking up room under the bench?

I've been looking on fleabay for the last couple of weeks but nearly
everything is 1.5hp and above of stupid money.

Tia

Bob
Charles P - 29 Mar 2009 19:51 GMT
>Gents,
>
[quoted text clipped - 19 lines]
>
>Bob

Bob

I've got a 1/2 horse one needinga good home.

Charles
Bob Minchin - 29 Mar 2009 22:06 GMT
>> Gents,
>>
[quoted text clipped - 24 lines]
>
> Charles

Thanks Charles.  I had a mate travel down from suffolk and we had dinner
together only last night. 'king typical!!
I'm near Southampton so quite a way to your place. John S might have
something suitable too.
Can I see what transpires in the next few days/week and get back to you
please.
Cliff Ray - 30 Mar 2009 09:38 GMT
rles

> Thanks Charles.  I had a mate travel down from suffolk and we had dinner
> together only last night. 'king typical!!
> I'm near Southampton so quite a way to your place. John S might have
> something suitable too.
> Can I see what transpires in the next few days/week and get back to you
> please.

Bob, I don't have a spare motor, but now live in Felixstowe and my
oldest mate moved to Southampton, so do that route quite regularly if
you need something couriered.
Bob Minchin - 30 Mar 2009 20:32 GMT
> rles
>>>
[quoted text clipped - 8 lines]
> oldest mate moved to Southampton, so do that route quite regularly if
> you need something couriered.
Hi Cliff,

Thanks for the kind offer. Looks like John has a motor that is spot on
for my needs so won't need the Suffolk courier service this time.

Cheers

Bob
Bob Minchin - 30 Mar 2009 20:40 GMT
>> Gents,
>>
[quoted text clipped - 24 lines]
>
> Charles

Thanks Charles but it looks like John S has one to meet my needs.
Cheers

Bob
John S - 29 Mar 2009 21:32 GMT
> Gents,
>
[quoted text clipped - 19 lines]
>
> Bob

Bob, Got one here that's come off a Myford, not sure what HP, it's
either 3/4 or 4/4
I can check tomorrow , its dark here and that workshop is bloody
haunted...

John s.
Bob Minchin - 29 Mar 2009 21:57 GMT
>> Gents,
>>
[quoted text clipped - 26 lines]
>
> John s.

quote "that workshop is bloody
> haunted..."
John, you really ought not to lock Gert up in the shop overnight!

If you could have a look sometime I'd be grateful. Charles P has a 1/2
hp but I think the standard fit was 3/4.

Regards

Bob
Richard Edwards - 30 Mar 2009 10:50 GMT
>>> Gents,
>>>
[quoted text clipped - 37 lines]
>
>Bob
I bought a 0.75kw from www.inverterdrive.com for £58 + VAT IIRC for my
lathe. Marelli motor I run on an AB Inverter. Very happy with it.
Actually cheaper today
<http://www.inverterdrive.com/group/Motors-AC/ac-Motor-0-75kw-1HP-4Pole-4-pole-br
ook-siemens/default.aspx
>

Richard
Bob Minchin - 30 Mar 2009 22:26 GMT
>>>> Gents,
>>>>
[quoted text clipped - 41 lines]
>
> Richard
Hi  Richard,

I was very impressed by their prices for new motors considering the eye
watering prices asked by other suppliers.
I've bookmarked them for other applications particularly if I'm
supplying some of my paying customers.
Thanks

Bob
John S - 30 Mar 2009 12:25 GMT
> >> Gents,
>
[quoted text clipped - 37 lines]
>
> Bob

Got a 0.75Hp one here still with Myford pulley on the sticky out bit,
dual wound.
Ten quid sound OK ?

John S.
Bob Minchin - 30 Mar 2009 20:22 GMT
>>>> Gents,
>>>> For the last 30 years I have been running my ML7R on a DC motor to get
[quoted text clipped - 34 lines]
>
> John S.
Very acceptable indeed John. Thank You!
 I'll put a beer voucher in the post to you tomorrow. Not sure when I
can get up to you or maybe there is someone going partway in the right
direction. Maybe you can pop it under Gert's pillow for safekeeping for
a while!
Best regards

Bob
Bob Minchin - 30 Mar 2009 20:50 GMT
>>>> Gents,
>>>> For the last 30 years I have been running my ML7R on a DC motor to get
[quoted text clipped - 34 lines]
>
> John S.
John, I see that Stevenson towers is on Google Street View. Even got the
  'Reliant on Steroids' van on view!!
Fame at last!
Bob
John S - 30 Mar 2009 21:07 GMT
> >>>> Gents,
> >>>> For the last 30 years I have been running my ML7R on a DC motor to get
[quoted text clipped - 39 lines]
> Fame at last!
> Bob

You mean the Donald or the fork truck ?

John S.
Bob Minchin - 30 Mar 2009 21:13 GMT
>>>>>> Gents,
>>>>>> For the last 30 years I have been running my ML7R on a DC motor to get
[quoted text clipped - 37 lines]
>
> John S.
The red one! That is yours I think?

Bob
Mark Rand - 30 Mar 2009 21:28 GMT
>> John S.
>John, I see that Stevenson towers is on Google Street View. Even got the
>   'Reliant on Steroids' van on view!!
>Fame at last!
>Bob

Looks like it needs a clean, the paintwork is all blurry :-)

(is it possible for someone to make a complaint about a picture of their
property being blurred out?)

Mark Rand
RTFM
Andrew Mawson - 30 Mar 2009 22:24 GMT
> >> John S.
> >John, I see that Stevenson towers is on Google Street View. Even got the
[quoted text clipped - 9 lines]
> Mark Rand
> RTFM

Still not shifted all those paving stones I see John !!!!

AWEM
John S - 30 Mar 2009 23:48 GMT
On 30 Mar, 22:24, "Andrew Mawson"
<andrew@no_spam_please_mawson.org.uk> wrote:

> <nos...@falseaddress.com>
>
[quoted text clipped - 19 lines]
>
> AWEM

I've laid about half of the lorry load, got about 5 more pallets to
lay and then there will be about 18 to go on Ebay.

Pictures here.

http://www.stevenson-engineers.co.uk/files/patio1.jpg

http://www.stevenson-engineers.co.uk/files/patio2.jpg

http://www.stevenson-engineers.co.uk/files/patio3.jpg

http://www.stevenson-engineers.co.uk/files/patio4.jpg

John S.
Mark Rand - 31 Mar 2009 00:49 GMT
>I've laid about half of the lorry load, got about 5 more pallets to
>lay and then there will be about 18 to go on Ebay.
[quoted text clipped - 10 lines]
>
>John S.

Isn't your lad a bit on the big side for playing on trampolines and paddling
pools?

<G>

Mark Rand
RTFM
Andrew Mawson - 31 Mar 2009 08:10 GMT
> >I've laid about half of the lorry load, got about 5 more pallets to
> >lay and then there will be about 18 to go on Ebay.
[quoted text clipped - 18 lines]
> Mark Rand
> RTFM

It's a "stress management facility" <G>

AWEM
John - 30 Mar 2009 23:00 GMT
> Gents,
>
[quoted text clipped - 19 lines]
>
> Bob

Hi Bob

Peripheral to your question, I wonder if you, or anybody else could
help; I have a DC motor and controller from a washing machine which I
would like to use on my lathe to obtain speed control. The only
problem I have is I haven't got a wiring diagram and have no idea
where to find one although I have trawled the net.

If I junk the existing controller, what I would like is information so
I can make or buy a suitable controller.

What I presumably need is a method of rectification and a speed
controller. The only controllers I have found have been too expensive
to make the project worthwhile.

Any assistance gratefully received.

John
Peter Fairbrother - 30 Mar 2009 23:42 GMT
>> Gents,
>>
[quoted text clipped - 25 lines]
> help; I have a DC motor and controller from a washing machine which I
> would like to use on my lathe to obtain speed control.

Could be grunty enuff, depending on the lathe - let's assume a Myford or
similar, needs about 2/3 HP, mebbe even a Boxford at 1.5 HP or so - but
I've never come across a DC main motor in a washing machine. Are you
entirely certain it's DC?

I guess I only get to look inside old washing machines, but I've looked
at quite a lot of them...

The only
> problem I have is I haven't got a wiring diagram and have no idea
> where to find one although I have trawled the net.
>
> If I junk the existing controller, what I would like is information so
> I can make or buy a suitable controller.

make is not really practical, even if electronic genius, easier to earn
money and buy one.

buy yes, but it will take time and looking if you want a cheap one, see
below.

> What I presumably need is a method of rectification and a speed
> controller. The only controllers I have found have been too expensive
> to make the project worthwhile.

I bought a 3/4 HP Leeson Speedmaster DC motor controller for £12.71 on
fleabay a fortnight ago - been looking for a bargain for six months or
more - and bought a 650W 90V DC motor for £14 several months before that.

But there have been several 0.5-1.0 HP inverter drives going at sub-£40
prices on fleabay recently, rather than the £90 or so they were a few
months ago, maybe worth a look?

However, you will then need a dual-voltage 3-phase AC motor ... come to
think of it, I need to buy one too, as I just bought a 3/4 HP inverter
for £19 odd ...

:)

-- Peter Fairbrohter

dam cant speel my one name

> Any assistance gratefully received.
>
> John
Mark Rand - 31 Mar 2009 00:47 GMT
>> Hi Bob
>>
[quoted text clipped - 6 lines]
>I've never come across a DC main motor in a washing machine. Are you
>entirely certain it's DC?

Hotpoint (Cough, spit) use universal motors. Bought one. Got a company
discount (part of GEC in the good old days). Will never buy another one. Any
washing machine that needs new motor brushes every 6 months is defective by
design.

Mark Rand
RTFM
Harry Bloomfield - 31 Mar 2009 17:31 GMT
John has brought this to us :
> Peripheral to your question, I wonder if you, or anybody else could
> help; I have a DC motor and controller from a washing machine which I
> would like to use on my lathe to obtain speed control. The only
> problem I have is I haven't got a wiring diagram and have no idea
> where to find one although I have trawled the net.

This might give you some ideas about the circuit theory.

http://homepages.which.net/~paul.hills/SpeedControl/SpeedControllersBody.html

Signature

Regards,
       Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

 
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