Hi Robert,

Welcome to the forum. You don't say what your budget is but may be a lathe with a 10 in. swing, and I assume you want an imperial version if you cut a lot of imperial threads. If you want a new lathe the Warco 250V is one option and seems to be available in an imperial version. A second hand British made lathe in good condition would be another option.

Thor

The Imperial 250 does not secifically list 26tpi on it's chart but it should not be too hard to work out a gear train to give it.

Really any lathe will cut 26tpi or very close to it depending on what gear train you use.

Not sure of the pitch, I think it may have been 20tpi, but it was the second job I did on my metric BV20.

Sadly the thread cutting chart on the lathe gave me the wrong change wheels so I had to have a second attempt using the wheels given in the instruction manual!

The very first job was making a smaller pulley for the lathe so I could slow it down to cut the thread.

Most of the import lathes at the moment with knob type gearboxes are designed to give some metric and some imperial threads for any given arrangement of change wheels unlike a Norton box giving you all imperial or many metric at one set-up. Inevitably when you want two threads on one job the second thread will require wheel changes.

Rather a poor show for Warco to say the gears are not available. They should be making sure they are available.

It's not clear if you are spending your own or the company's money. If it was your shop burned down then commiserations. I think as a pro you should be looking at an M300 or Colchester.

I love my chipmaster, cut both 19tpi (1/4 bsp) and 13 tpi (1/2 unf) straight off the gearbox. Mine replaced a Boxford AUD and I’ve never looked back.

£8900 + vat for a new Boxford and they put cheap crappy hand wheels on the machine!

.

My apologies for drifting off-topic, but I continue to find this assertion [from Dave's linked page] 'interesting'

[quote]

The only manual lathe you can buy which is still truly Made in Britain

[/quote]

.

MichaelG.

My Bantam had 26tpi on the gear chart.

Am sure that a Chester Craftsman would do what you want. You may be able to find a secondhand Warco BH600, or Engineer's ToolRoom BL12-24. All have a 38mm bore Mandrel (5MT, but should come with a 5MT – 3MT sleeve).  All three are almost identical other than the paint job.

As I recall the BH 600 was available either Imperial or Metric, the Craftsman was Metric, and the BL12-24 is Metric, but dual dialled. (I work in Imperial almost all the time)

The swing is 12" over the bed, with 18" if the gap is removed.

They are heavy, 300Kg and should come c/w 3 and 4 Jaw chucks, Faceplate, Fixed and Moving Steadies.

Bedways are Induction hardened.

In standard form these are 12 speed machines, a 2 sheave Motor pulley driving a 3 sheave pulley from countershaft to the Mandrel, plus Backgear.(which gives a range of 6 lower speeds)

(Having VFD, my BL12-24 has only 6 speeds + Backgear, all varied by the VFD).

On one of these, with a 3mm pitch Leadscrew, the gear set up, for the Norton Box for 26 tpi is

40:120/127:40 C -7.

With a 8 tpi Leadscrew the set up is

40:127:40 with the Norton box set to C – 7

The Leadscrew is only used for screwcutting, for Power traverse, there is a separate power shaft.

If you need the warning, Cycle threads are 60 degree, whilst B S Brass are 55 degree Whitform.

Howard

Edited By Howard Lewis on 15/01/2019 21:48:23

.

From the Myford home-page https://www.myford.co.uk

[quote]

New high speed Super 7 Connoiseur lathes are made here, on site, in the UK

[/quote]

.

Can both be right ?

… or are we in the realm of 'weasel' definitions ?

MichaelG.

Edited By Michael Gilligan on 15/01/2019 22:03:58

Maybe it has something to do with:

Where castings are poured, where they are machined, where the machined parts are assembled or simply where new stickers were carefully placed on the otherwise finished product?

In other words, does ‘manufactured’ mean ‘made’, or not?