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Old Nov 02, 2007, 02:46 AM
Electricky Dicky
Guest
n/a Posts
Harrison M250

I am considering creating a "Hobby" workshop and have the offer of
purchasing a Harrison M250.
Would the group feel that this is too big for model type work? First
project would probably be a small IC engine typically of the Jan
Ridders design.
I spent some years in sub contract machining in the dim and distant
past so have a reasonable degree of experience.
The Harrison is of interest because
1 its local
2 its full metric and imperial
3 its 500
4 Comes with 3 jaw, 4 jaw, faceplate, fixed steady, quick change
toolpost and two holders, additional change gears.

Needs a good clean up and motor changed to single phase.

Any comments? Negative or positive. Any particular points on the m/c
that need checking out?



--

Richard
Old Nov 02, 2007, 03:42 AM
dave sanderson
Guest
n/a Posts
Re: Harrison M250

On Nov 2, 7:46 am, Electricky Dicky <m...@privacy.net> wrote:
> I am considering creating a "Hobby" workshop and have the offer of
> purchasing a Harrison M250.
> Would the group feel that this is too big for model type work? First
> project would probably be a small IC engine typically of the Jan
> Ridders design.
> I spent some years in sub contract machining in the dim and distant
> past so have a reasonable degree of experience.
> The Harrison is of interest because
> 1 its local
> 2 its full metric and imperial
> 3 its =A3500
> 4 Comes with 3 jaw, 4 jaw, faceplate, fixed steady, quick change
> toolpost and two holders, additional change gears.
>
> Needs a good clean up and motor changed to single phase.
>
> Any comments? Negative or positive. Any particular points on the m/c
> that need checking out?
>
> --
>
> Richard


If its not a really tired old hack then Id certainly give it a go. Its
easier to do small on a large machine that large on a small machine...
sounds equiped enough that you could be making things quickly.
Not sure how easy a remotor a modern Harrison, but my L5 was dead
easy. Id consider an inverter drive if you can, I put a newton tesla
on mine and it makes the speed range much more flexible, and has fwd/
rev as well.

Dave

Old Nov 02, 2007, 07:46 AM
Trevor Jones
Guest
n/a Posts
Re: Harrison M250

Electricky Dicky wrote:

> I am considering creating a "Hobby" workshop and have the offer of
> purchasing a Harrison M250.
> Would the group feel that this is too big for model type work? First
> project would probably be a small IC engine typically of the Jan
> Ridders design.
> I spent some years in sub contract machining in the dim and distant
> past so have a reasonable degree of experience.
> The Harrison is of interest because
> 1 its local
> 2 its full metric and imperial
> 3 its 500
> 4 Comes with 3 jaw, 4 jaw, faceplate, fixed steady, quick change
> toolpost and two holders, additional change gears.
>
> Needs a good clean up and motor changed to single phase.
>
> Any comments? Negative or positive. Any particular points on the m/c
> that need checking out?
>
>
>
> --
>
> Richard


Grab it!

Even if beat to heck, it'll outcut a Myford any day.

Small work on a big lathe is way easier than big work on a small lathe.

Like as not, once you have it, you will find yourself with projects
too large to fit comfortably. That is the nature of having a lathe! :-)

Cheers
Trevor Jones

Old Jan 25, 2008, 04:18 PM
pmaddocks@btconnect.com
Guest
n/a Posts
Harrison M250

How do I drain the oil from the apron reservoir?

What is the M10 bolt for which is above the apron on the rhs?

Maddog
Old Jan 26, 2008, 06:43 AM
Toby
Guest
n/a Posts
Re: Harrison M250

On 25 Jan, 22:18, pmaddo...@btconnect.com wrote:
> How do I drain the oil from the apron reservoir?
>
> What is the M10 bolt for which is above the apron on the rhs?
>
> Maddog


Hi Maddog

if I remember correctly, the M10 bolt is a lock for the saddle to
prevent it travelling along the bed when facing, parting off etc.

I can't help with the oil drain right now but I might be able to find
out at work - we have about 200 Harrison M250s but I only use one very
occasionally.

cheers, Toby
Old Jan 27, 2008, 03:23 AM
pmaddocks@btconnect.com
Guest
n/a Posts
Re: Harrison M250

On Jan 26, 12:43=A0pm, Toby <tobybis...@aol.com> wrote:
> On 25 Jan, 22:18, pmaddo...@btconnect.com wrote:
>
> > How do I drain the oil from the apron reservoir?

>
> > What is the M10 bolt for which is above the apron on the rhs?

>
> > Maddog

>
> Hi Maddog
>
> if I remember correctly, the M10 bolt is a lock for the saddle to
> prevent it travelling along the bed when facing, parting off etc.
>
> I can't help with the oil drain right now but I might be able to find
> out at work - we have about 200 Harrison M250s but I only use one very
> occasionally.
>
> cheers, Toby


Toby - many thanks
That would make sense.
The other 2 reservoirs (headstock and screw gearbox) have drain plugs
but apparently not the apron.

Maddog

Old Sep 26, 2010, 03:07 PM
David Hodgson
Guest
n/a Posts
Re:Harrison M250

Hi,
I converted my M250 by fitting a "Same-Size" single phase motor. It was easy
and cheap although still a brand new GEC that I got off eBay. Attaching the
motor was dead easy but once you have done it you have to completely re-wire
the switch panel and unless you are very good with electrical things you
will find the reversing switch a nightmare, also I bought a new starter to
cope with the heavier current flow. I ended up having to make a new steel
switch panel and a new aluminium face panel but the motor part was as is say
dead easy

url:http://myreader.co.uk/msg/134811825.aspx
Old Sep 26, 2010, 03:42 PM
Mark Rand
Guest
n/a Posts
Re: Harrison M250

On Mon, 27 Sep 2010 04:07:01 +0800, "David Hodgson"<bodgemaster@wanadoo.org>
wrote:


>Hi,
>I converted my M250 by fitting a "Same-Size" single phase motor.



Try to stay awake there in the back of the class :-|



Mark Rand
RTFM
 


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