Spindle Raiser

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?

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

Neil

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

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?

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.

.

... 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.

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).

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 Originally made to turn 10" flywheels.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.

Thanks for posting this EB - v interesting.

Thanks for posting this EB - v interesting.

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