Do make sure that the gears are cut properly … from sheet material, NOT rod

There were some dodgy ones on the market a few years back.

[ Tufnol 'Whale Brand' was the original spec, I think ]

MichaelG.

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https://tufnol.com/tufnol-gears/

Edited By Michael Gilligan on 19/04/2022 20:55:27

Hi Bricky you should have no problems cutting silver steel. I made a tap for my cross slide bush from silver steel. Turned the thread to depth first then cut the cutting edges followed by hardening and tempering.

David

When turning an ACME thread DO NOT plunge cut the tool into the work in a square cut by using the cross slide.

Instead turn the compound to a 14.5 degree angle (half of the 29 degrees for an ACME thread) and only use the compound screw to advance the cutter. This reduces the load on the tool as it is only cutting on the leading edge and 1 side, instead of 2 sides.

Lots of Youtube videos showing this method

Ford and Vauxhall used tufnol camshaft gears in the 1920s. Still good in both of mine. A good long lasting solution to quietening gear drives if engineered correctly.

Michael, try the Myford site instead.
They come under headstock, rather than change gears
https://www.myford.co.uk/acatalog/Headstock-Assembly.html

Parts A2006 & A2007. @ £21.22 each.

The chap I linked to earlier on Facebook, was doing them at £25 a pair direct from him, or @ £27 via ebay
https://www.ebay.co.uk/itm/324815202954   

Bill

Edited By peak4 on 20/04/2022 23:21:05

On paper they may be two separately listed companies, owned by the same person/s.

But in practice, whenever I order genuine Myford parts from Myford Ltd's own website or Myford's eBay shop, those genuine Myford parts from Myford themselves arrive in a box all clearly labelled and packaged as genuine Myford parts, BUT with the sender clearly listed as RDG Tools Ltd of the very same Mytholmroyd address that Myford operates out of ie Unit 7/8 White Lee / Burnley Road, Mytholmroyd.

They are for all practical purposes the same company operating out of the same premises under the same owner/s, with RDG being the dominant half or parent company according to their customs declaration as the sender of genuine Myford parts.

So if the RDG/Myford industrial complex megacorporation conglomerate or its subsidiary components at Mytholmroyd do not have any more gears in stock on either of their websites or eBay stores, Bricky's option is aftermarket or used parts on eBay and take a chance on the quality. Or use a steel gear if available and keep revs below what sounds safe. If it's an ML7, won't be a problem at its top speed. And one fibre gear will still act as a weak point if that is a concern.

It is worth checking both their company websites and their eBay stores. I have found items in the past listed on one but not the other. So you can get lucky. Usually it is the eBay store that has things that are listed as out of stock on the Myford.co.uk or RDG.co.uk sites, but it can be the other way round too.

Edited By Hopper on 21/04/2022 06:14:25

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That’s very interesting, thanks Hopper … and something of which I would obviously have no personal experience.

When I looked at Companies House [a while back], it seemed very clear that there were two distinct Limited Companies: and I have always assumed that this was to the advantage of both.

MichaelG.

Not that I know much about business, but I would assume they were kept as two separate limited companies for administrative reasons. If one went bust it would not take the other down with it. And it would keep the valuable Myford brand intact and reputedly independent. It wouldn't do to have it sharing a website etc with a supplier of import mid-range gear, tainting the image so to speak. Plus I suppose would make it easier to sell the Myford brand/business on in the future if ever required.

Tufnol gears, when I was in Kenya I had an Opel Kapitan, It had Tufnol timing gears, Which failed and the replacement was an Aluminium gear, an easy repair as I undid one engine mount and jacked the enginge up and removed the radiator and was able to access the timing gear through the space opened up.

There is a longer story about this but having showed the Opel agent how I did it was given a nice cash sum as it saved many hours work lifting an engine out.