Backgear for a Chinese 920 lathe?

Hello Neil, I don't mind paying to get a sight of the article in the archives. Can one do that?

Regards,

Andrew.

P.S. I can't find the ME articles that were referred to.in my collection of MEs. They finish in 1986, when work and other pressures finally caught up with me. So if anyone can scan those for me I would be very grateful!

Andrew,

Send me a PM with your email address. I've already scanned them for my own interest so it's no bother to email them to you.

Peter G. Shaw

For a variable, low speed, why not make a Mandrel handle?

The limit on availability of torque is your strength and the length of the handle.

Howard

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Howard,

May I refer you to Andrew's post ^^^ on the previous page.

MichaelG.

It's not something I can arrange at this time, access is just alongside a digital sub.

Neil

If you have a decent scan, send it to me instead and I'll 'officialise it'.

Then I won't have to send the goon squad after you

Neil

(I typed 'top sned teh' - that's what coming in from an ice-cold telescope does to your fingers...)

Edited By Neil Wyatt on 29/11/2017 22:50:49

Ive been reading an artical, slowing down the 9x20 lathe, MEW 219 page 8.

Edited By BOB BLACKSHAW on 30/11/2017 00:35:00

Andrew

Regarding the article slowing down the 9x20 lathe MEW 219 page 8,it seems a lot of work to achieve this. I also have a 9x20 lathe and fitted a VDF which was quite simple, and took about 5 hours to do. If you need any info how to fit one on the 9x20 send me a PM, I'm glad I fitted one on mine.

Edited By BOB BLACKSHAW on 30/11/2017 02:31:57

Edited By BOB BLACKSHAW on 30/11/2017 02:33:04

Hi Andrew;

Ok - I understand about turning chucks by hand.

One of my Compact-8s was measured by yours truly for Graham Meek for his screw-cutting clutch.

Although I do have his initial plans, they might not be up to date. This second Compact-8 was acquired to CNC it. It is still not finished... maybe I'll make the clutch after all, and forget the CNC. Something to be decided.

You can see the Myford version of this clutch in MEW, and other places on-line. Someone here might be able to pass along Graham Meek's email address, if you are interested in possibly making this clutch from Mr. Meek's drawings.

Just a thought.

Andrew,

Maybe some ideas here:

**LINK**

Mahgnia

Hello Magnia,

I think this was where I came in! The only geared set up I could find initially was an epicyclic drive using gears from a car auto transmission. Not having access to such gears, I chickened out. I most certainly would not want to make a similar set up for scratch!

A screw cutting clutch is on my list of to dos, but a long way down the list at the moment! I will try out my DC motor, I already have a variable electronic DC supply on the shelf, so I will try it out. Again I have a DC motor and variable DC PSU on the shelf and the lathe is peanuts, so I don't have much to lose.

If it goes pear shape, at least I can try a 3 phase motor and inverter. That solution will however cost considerably more. Not too sure if it is worth it for a cheap 9 x 20 lathe, but it is in reasonable nick and could with a few simple mods could become a reasonable lathe.

Thanks once again everyone,

Andrew.