Colchester Triumph 2000 taper turning attachment – missing parts

[Sebastian MayfieldParticipant @sebastianmayfield67516]

My lathe is fitted with the taper turning attachment, but part of it is missing, namely the clamping assembly (circled red in picture).

I'm doubtful I'll find this for sale separately any time soon, but it doesn't look too difficult to have a go at making one. Could anyone point me in the right direction? The manual doesn't show any details, but I'm hoping there's someone out there who has one they could measure / send pictures? Thanks.

[Sebastian MayfieldParticipant @sebastianmayfield67516]

[Peter TruemanParticipant @petertrueman]

I have this part but cannot post pictures.

Mail me and I will post direct

[SymonParticipant @symon78657]

Hey,

If Sebastian didn't take you up on your offer (very unlikely) I'd be interested in working something out.

Or if anyone has one and is seeing this thread…join up and let me know 😀

Basically my taper attachment came with the wrong clamp. I think it's a Colchester Student clamp.

Maybe someone out there has a Student lathe that came with a Triumph 2000 clamp *Looks for the pigs will fly emoji*

[Don KinzerParticipant @donkinzer43003]

I realize that this thread is somewhat old but was wondering if Sebastian still has the wrong bed clamp that he thinks might be for the Student. If so, I'd be interested in getting some measurements to see if it would, in fact, fit on my Student.

[Martins SParticipant @martinss32357]

Hi,

I'm also in a same "boat" with apologies about writing in old post… Also have M250/M300 taper attachment without bed clamp. Clamp seems to be same between M250 and M300. And almost always missing.

For a quite a few years I did not managed to find one. Even not to find someone wiling to make pics and drawings… Yes, I can make something similar, but I would like to make as close as possible copy. Or make precise drawings (for others) myself if I manage to get actual part in my hands…

Thanks.

[Antony PriceParticipant @antonyprice56876]

Hi Martin

Where are you in the UK?

I have one, its from an M250 and I've also been advised it will fit an M300

I can easily do some photos for you. Measuring it up for some drawings, will take a bit longer

Send me a pm for contact details

Tony

[Clive FosterParticipant @clivefoster55965]

There is nothing particularly magical about these bed clamp and stay rod systems.

The only truly important thing is that the alignment be such as to place no strain on any of the slides in the taper turning attachment proper. So long as that alignment is held for any position on the bed and and the actual bed clamp doesn't get in the way anything that works will do.

SouthBend, in typical cheap to make but very effective fashion, ensured alignment by making an oversize hole in the bed clamp for the steady bar to go through then casting babbit metal around it to fill the hole with the whole thing assembled on an otherwise complete machine. The steady bar had to be in alignment after that. SouthBend used dovetail slides throughout on their version making it excessively sensitive to alignment errors with, in my view, no compensating virtues.

Although these hung off the back of the apron systems are more versatile in that they can easily be used at any position along the bed I prefer the type bracketed direct to the bed. Simplicity of execution and adjustment outweighing a fairly theoretical flexibility. I'd hate to be without a taper turning attachment but its use averages out at around three to five times a year.

Clive

[Martins SParticipant @martinss32357]

Hi,

Sorry, I forgot to update my details, I'm not from UK… But I have M250 lathe.

Yes, it should fit also M300, most of parts are same between M250 and M300.

Probably Colchester Master 2500 oder Student 1800 also have same bed clamp, but I'm not sure, just from pictures, I saw, seems very similar.

BTW, in fact, this taper attachment is designed for M300 and for M250 it is just poorly adapted. It turned out, that on M250 not full lenght can be used at all. I'm now in process of redesigning so that all works properly on M250 also, but that's another story…

Posted by Antony Price on 19/06/2020 17:14:53:

Hi Martin

Where are you in the UK?

I have one, its from an M250 and I've also been advised it will fit an M300

I can easily do some photos for you. Measuring it up for some drawings, will take a bit longer

Send me a pm for contact details

Tony

[Martins SParticipant @martinss32357]

Clive,

I agree with you, but, as I said, I prefer stick to original factory solution/design/dimensions if it works ok. I case of bed clamp, if I manage to get original part to measure myself, I will make not only one copy, but some batch for others who don't have mill at hand or willingness to make themselves- as you know, when you setup tooling, it's not very big difference to make one or 10 parts.

At the moment, I would be happy to get any measurments at all to make clamp for my present needs.

As I understood, spares for taper attachment are not available from 600group anymore.

Edited By Martins S on 19/06/2020 22:49:56

Edited By Martins S on 19/06/2020 22:50:33

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