Spindle Raiser

[Ian Robinson 4Participant @ianrobinson4]

There is an interesting video on You Tube – "Using the Spindle Raiser on a Myford Super 7" (David Piddington 1.10.12) – that doubles the centre height of the series 7 lathes and allows components of upto 14" dia to be machined. Sounds great but what are going to be the long term implications for the lathe bearings, slides, motor, drive etc, etc from the increased loads that will result?

[Ian Robinson 4Participant @ianrobinson4]

[Sub MandrelParticipant @submandrel]

Much reduced rigidity, so reduce cuts and feeds to match. Only use as a temporary expedient.

Neil

[V8EngParticipant @v8eng]

http://www.myford.co.uk/acatalog/info%5f1394%2ehtml

Noticed the above picture when browsing the Myford website recently.

Looks interesting, but I do not think I will be trying anything like that on my ML7.

 

 

Edited By V8Eng on 15/05/2013 18:58:58

[Ian Robinson 4Participant @ianrobinson4]

Thanks for the replies and for V8Eng's liink.

Apparently this Myford lathe had approx 6" centres and were specials made for the brake company, Ferodo in the 1950's.

Going back to my original point/query; when you say you don't think you will be trying it on your ML7, does your concern relate to damage that might result to your lathe or to a likely lack in rigidity or both?

[V8EngParticipant @v8eng]

I mostly seem to turn small stuff up to about 75mm dia, so nothing more than the standard ML7 can handle (as yet).

My lathe is now 43 and it generally gets treated (fairly) gently, I would probably get a larger machine if the requirements changed.

It's interesting to hear why the pictured item was produced and Myford must have known what they were doing making it in the first place.

[Michael GilliganParticipant @michaelgilligan61133]

Posted by Ian Robinson 4 on 15/05/2013 20:54:31:

Apparently this Myford lathe had approx 6" centres and were specials made for the brake company, Ferodo in the 1950's

.

… and it looks ideal for the job of skimming the linings on Drum Brake Shoes.

Ferodo used to offer that service, for Motorcyle Racers et al.

MichaelG.

[Chris HeapyParticipant @chrisheapy71135]

I seem to remember Chester sold an 'oriental' lathe/mill combo with a huge swing, and it would likely cost far less than any factory mod to a Myford. I can't say anything about the quality other than when I saw one in a shop I wasn't impressed (as a do-all machine) – but at the same time it was certainly a solution for turning large diameters and would at least be functional with a bit of fettling. It was cheap (which helps).

[Engine BuilderParticipant @enginebuilder]

I made up this one a few years ago. Originally made to turn 10" flywheels. Then I needed a bigger flywheel so the spindle raiser got a raising block.

As it was only for occasional use i didn't bother making up a raised toolpost but used a couple of angle plates bolted together. As there is no matching tailstock I need to rough drill a centre hole before mounting on the faceplate and then the centre can be bored out.

[Ian Robinson 4Participant @ianrobinson4]

Thanks for posting this EB – v interesting.

[Ian Robinson 4Participant @ianrobinson4]

Thanks for posting this EB – v interesting.

Edited By Ian Robinson 4 on 18/05/2013 09:57:12

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