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Author Topic: Increasing gap on a Myford.  (Read 12612 times)

Offline caskwith

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Increasing gap on a Myford.
« on: April 10, 2012, 12:14:47 PM »
First off, hello. Been a lurker here for a long time and always enjoy reading the projects and learning new things. Rarely have anything useful to contribute so this is my first post.

Wanted to know if anyone has increased the swing on a myford (super 7). The current 3.5" swing isn't quite enough sometimes for me and it would be nice to make the most of the extra space the gap provides however the chuck I use bridges over it so I am thinking is it a crazy idea to chop a little bit of bed out and lengthen the gap?

Thanks in advance for any help.
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Offline Jasonb

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Re: Increasing gap on a Myford.
« Reply #1 on: April 10, 2012, 03:20:20 PM »
Use a faceplate instead of the chuck and you will get the full benifit of the gap. If its longer work you want to do then there have been several designs to increase the capacity of Myfords



J
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Offline caskwith

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Re: Increasing gap on a Myford.
« Reply #2 on: April 10, 2012, 03:36:09 PM »
Quote from: Jasonb on April 10, 2012, 03:20:20 PM
Use a faceplate instead of the chuck and you will get the full benifit of the gap. If its longer work you want to do then there have been several designs to increase the capacity of Myfords



J

Can't use a faceplate, tried it before and it takes far too long to set up and since this is going to be used several times a day it needs to work with my custom chuck, also can't use a spindle riser since I need to be able to drill as well as turn. Thanks for the suggestion though and thats a cool video.
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Offline Fergus OMore

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Re: Increasing gap on a Myford.
« Reply #3 on: April 10, 2012, 03:51:57 PM »
'Martin Cleeve'- the photos are in his Screwcutting in the Lathe.

The write up was in ME in the 1950's

I reckon that if you are going along that line, you should change your top slide to a steel one- as Hart did.
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Offline caskwith

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Re: Increasing gap on a Myford.
« Reply #4 on: April 11, 2012, 08:44:40 AM »
Quote from: Fergus OMore on April 10, 2012, 03:51:57 PM
'Martin Cleeve'- the photos are in his Screwcutting in the Lathe.

The write up was in ME in the 1950's

I reckon that if you are going along that line, you should change your top slide to a steel one- as Hart did.

Does anyone have the pictures? I don't have that book I am afraid.
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Offline Fergus OMore

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Re: Increasing gap on a Myford.
« Reply #5 on: April 11, 2012, 09:47:46 AM »
I suspect that Pete( Miner) will have the appropriate ME's with all the
dimensions.

If not- come back, please

Norman

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Offline Fergus OMore

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Re: Increasing gap on a Myford.
« Reply #6 on: April 11, 2012, 09:54:29 AM »
Somewhere else( my memory is playing tricks) is  an attachment which was professionally made- not by Myfords. My guess is High Turn or High Rise.

It might jog other memories. Pete, can you throw any light, please?
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Offline Bluechip

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Re: Increasing gap on a Myford.
« Reply #7 on: April 11, 2012, 10:08:13 AM »
I only remember this one ....

Many years ago there was an exhibtion in Derby, '72 or '73 .. memory shot ..

Saw one  in the flesh and it struck me as a bit of a bodge ...

http://www.lathes.co.uk/myford/page18.html

BC
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Offline Jasonb

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Re: Increasing gap on a Myford.
« Reply #8 on: April 11, 2012, 10:14:27 AM »
What chuck are you using? you may be able to save a bit of room with a slim body chuck, I've a bison slimbody 4 jaw and its half the thickness of the 4 jaw supplied with my lathe. May be the answer if you only need a little extra length as I would not want to go cutting the bed as one it could weaken it and two may release stresses and it will move.

You may have to wait a while for Pete, as he works something like 3 weeks on, 3 weeks off and does not have internet access when he's at the mine.
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Offline Jasonb

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Re: Increasing gap on a Myford.
« Reply #9 on: April 11, 2012, 12:18:12 PM »
Just looked through Cleeve's Screwcutting book and can't see anything to increase the gap or swing of a myford in there, what page are you looking at Furgus??
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Offline Fergus OMore

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Re: Increasing gap on a Myford.
« Reply #10 on: April 11, 2012, 12:28:02 PM »
i don't have the book in front of me but find the 'workhorse' as he described his lathe.

Then look at the tailstock and the 'plate' is deeper.Then look at the headstock and you will find it has a spacer. Of the record, this is a 3/8th increase.

If you look at this minutely, you will find that this is only part of a ML7. Cleeve couldn't afford to buy the whole caboodle.

Long story, so much information was stopped and is probably lost.

Somewhat sadly

Norman
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Offline websterz

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Re: Increasing gap on a Myford.
« Reply #11 on: April 11, 2012, 01:32:08 PM »
Quote from: caskwith on April 10, 2012, 03:36:09 PM

... also can't use a spindle riser since I need to be able to drill as well as turn...

Can't you make a riser block to lift the centerline of the tailstock to match the chuck? We're machinists...we MAKE things work!  :thumbup:
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Offline caskwith

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Re: Increasing gap on a Myford.
« Reply #12 on: April 11, 2012, 01:43:08 PM »
Quote from: websterz on April 11, 2012, 01:32:08 PM
Quote from: caskwith on April 10, 2012, 03:36:09 PM

... also can't use a spindle riser since I need to be able to drill as well as turn...

Can't you make a riser block to lift the centerline of the tailstock to match the chuck? We're machinists...we MAKE things work!  :thumbup:

Well I am very much an amateur machinist and the lathe is really my only machine tool, no mill or anything (yet lol)
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Offline caskwith

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Re: Increasing gap on a Myford.
« Reply #13 on: April 11, 2012, 01:43:57 PM »
Oh and the chuck I am using is a custom made 2 jaw so it can't be replaced.
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Offline Fergus OMore

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Re: Increasing gap on a Myford.
« Reply #14 on: April 11, 2012, 01:47:18 PM »
Actually, Jack Radford made 'Elevating heads' and these are detailed in his book.

They followed the Murad Bormilathe principle or vice versa :loco:
--------------------------------------------------------------------------------------------

Your post after came after I'd written the above.

So go out and buy Radfords book and add the two Thomas ones.

All are specifically written for the Super7 which you have.
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