Posted by Daedalus on 25/10/2022 21:04:36:
Jelly, re your post and comment
"I suspect that a rebuilt (and warrantied) DSG or a new "Trens" ex Slovenia would both be cheaper than and more satisfying than a new Colchester (or a new Chester)."
I will have a look at the Trens tomorrow, but I suspect they will be out of my price range. The only one I could find on line was 20 years old and $9,000 almost. I will also give DSG a call, but I think that the majority of their machines, beautiful as they are, will also be too rich and probably a bit bigger than I want. I always recall the headstocks being huge and I'm not sure if they made metric versions.
My guess is that a UK/European Manufactured/Re-Manufactured lathe would probably be pushing at the the limits of your budget, but by the same token you are in the position where you could actually spend your whole lathe budget on a lathe, and be up and running from the day you take delivery, so maybe it's worth it?
The DSG's and the TOS/Trens's are both pretty heavy beasts, just massive (literally) amounts of cast iron used everywhere (especially in the headstock); my TOS toolroom lathe weighs in a 2 tonnes for a 320 x 1000 capacity, and a 13"x36" DSG is about 2.8 tonnes – both comparable in size with a Warco GH1330 which weighs about 580kg.
To match or slightly exceed the Triumph in size (Trens SU50 or DSG Type 15), you're looking at 3.8 – 4.5 tonnes with either of those brands.
DSG did do metric lathes and I would think most re-builds get new metric leadscrews and nuts…
As a near-complete aside in relation to DSG and leadscrews; I did see one (It could have been a Lang, but I'm pretty sure it was DSG) configured with dual leadscrews, a selector, two half-nut levers, and an interesting dual layer thread chasing dial, unsure if that was a factory special or a user improvement but always thought it was cool.
Posted by Daedalus on 25/10/2022 21:04:36:
I have actually used a TOS lathe previously, when I was in the Merchant Navy. One of the ships I was on in the very early 80's, was one of 5 built in Poland and they had TOS lathes on them. They were as I recall quite big machines with probably a 2 mtr bed on them. But the machine had everything you could wish for on a centre lathe. Lots of speeds, lots of threading, and I'm sure a high speed lever for the feeds. You could get the saddle from one end of the bed to the other in seconds. Though I may be mixing that one up with a Stanko on a ship built in Russia.
The TOS's from Trencin, the polish brands from Andrechowska, and the Stanko's all shared the rapid travel feature as part of their generally high specification, the difference (to my knowledge) is that the TOS and Polish lathes have a 4-way joystick on the apron, whilst the Stanko has a conventional feed selectors (two-position, or three when equipped with power top-slide) driven off the feed-shaft, and the rapid feeds are push-button controlled running a separate 3-phase motor mounted directly to the side of the apron.
Edited By Jelly on 26/10/2022 13:35:42