supernova2 adaptors

[Random Orbital Bob]

Chaps/chapesses

I'm going to change lathes sometime in the next 6 months and am already casting the net around trying models out amongst friends. The goal is simple...more capacity and stability for larger work...natural progression I guess.

I'm just thinking should I sell my chucks etc or try and adapt them. Specifically, amongst others, I've got a SN/2 which I've had from new and always liked. Well made, well machined, rather nice chuck with various jaws and accessories which I don't really want to lose if I can help it. I think its directly threaded 1" x 8tpi and then adapted to my CL4 with the 3/4" x 16tpi adapter ring. Can I get an adapter ring which would convert it to the M33 x 3.5 spindle size ie that of the bigger jets? I've had a wiz through Records site and couldn't see that particular combo. If anyone happens to know this it would save me trawling through a lot of rubbish. Thanks

 

[marcros]

i dont believe so- when i looked at the SN2, the m33 x 3.5 were an option that was directly threaded. you may be able to get an exert, but from my understanding, you would be better to sell the chuck and buy another in the correct thread, than to live with the compromise, particularly for large stuff.

http://www.charnwood.net/shop/product/1 ... uck?cid=74

It might be worth having a adapter instead of replacing all chucks, but i dont really like the idea from a runout perspective- there are cumulative errors that could creep in.

 

[Bodrighy]

I got adaptors for two old lathes from Peter Childs for the same chuck. Price of a new decent chuck it was worth it. Both adaptors cost less than a single new chuck would have.

Pete

 

[Random Orbital Bob]

OK thanks chaps...so there is an option then. Were those adaptors off the shelf or made for you Pete?

 

[Random Orbital Bob]

i dont believe so- when i looked at the SN2, the m33 x 3.5 were an option that was directly threaded. you may be able to get an exert, but from my understanding, you would be better to sell the chuck and buy another in the correct thread, than to live with the compromise, particularly for large stuff.

http://www.charnwood.net/shop/product/1 ... uck?cid=74

It might be worth having a adapter instead of replacing all chucks, but i dont really like the idea from a runout perspective- there are cumulative errors that could creep in.

My primary reason for upgrading is the capacity and stability for heavier work and I too feel risk about adding "flimsiness" to the setup so I appreciate direct threaded is the best option.

 

[Bodrighy]

To be honest I can't remember. I rang them and inquired and they were really helpful. I don't personally finds any discrepancy using the adaptors but maybe I have been lucky.

Pete

 

[Random Orbital Bob]

Thanks Pete. At least it gives me an option doesn't it. Purely out of curiosity what was the chuck you kept (which you adapted)?

 

[CHJ]

Personally if you are changing up for increased capacity then I would try and sell on existing chucks with the lathe as buyer is in for hassle doing what you had to do, or individually if they don't want them 1" X 8 is a popular size. and start afresh with the bigger threads. Either same make and hold back some of your accessory jaws or take the opportunity to buy into a large accessory jaw pool to go with your expanded capacity.

 

[paulm]

There's an adapter listed here Rob part way down the page

http://www.toolpost.co.uk/pages/Chucks_ ... ories.html

Cheers, Paul

 

[Random Orbital Bob]

thanks Paul :-0

 

[midnightlunchbox]

I ordered a new patriot chuck for the lathe at my work and just ordered the correct sized thread adaptor/insert along with the chuck. It is an old Union Graduate lathe with an old imperial thread and the chuck runs perfectly true with the adaptor. What I don't like about this set up is that the adaptor protrudes from the chuck quite a bit and is a sizeable chunk of steel, this makes the chuck very heavy and awkward to mount. But considering you have a few hundred pounds (by the sounds of if) of chucks and jaws, an adaptor might be worth a try before replacing the lot.

But I'm hardly an expert!

 

[Random Orbital Bob]

thanks....er.....midnight

It's as much about all the accessories as it is the chuck. For example the button jaws for the SN2 cost £70 on their own! Even if I weren't able to adapt the chuck it might make sense to buy the direct threaded one as Chas suggested so I can reuse the sunk investment in jaws.

 

[Paul Hannaby]

hi Bob,
Yes you can get an adapter from M33 x 3.5 to 1" x 8 tpi. Axminster sell one made by Jet (Stock No 709960). http://www.axminster.co.uk/thread-adaptor-m33-x-3-5mm-f-to-1-x-8-tpi-m

However, if you are using the adapter it obviously extends the chuck away from the spindle by another couple of inches so with bigger work, that might cause problems.

 

[CHJ]

thanks....er.....midnight

It's as much about all the accessories as it is the chuck. For example the button jaws for the SN2 cost £70 on their own! Even if I weren't able to adapt the chuck it might make sense to buy the direct threaded one as Chas suggested so I can reuse the sunk investment in jaws.

You could go the Versa Chuck route, that way carriers are available for your nova accessories.
Just make sure you order the correct set of carriers.

Not quite up to the old Axy precision chucks but I would rate slightly better than the early nova I had for weight and rigidity.

 

[marcros]

I would have another supernova- you know and like the quality. If you can't get one with no jaws, sell the old one with the standard jaws and I bet you won't lose much at all. I have seen rutlands chucks on eBay sell for way more than they cost.

 

[Random Orbital Bob]

Thanks again chaps...good set of options all round there. I don't feel quite so cul-de-sac'd now

Just as an aside....I spent a couple of hours on the Jet 3520B on Tuesday. What a beauty that thing is!

 

[midnightlunchbox]

thanks....er.....midnight

It's as much about all the accessories as it is the chuck. For example the button jaws for the SN2 cost £70 on their own! Even if I weren't able to adapt the chuck it might make sense to buy the direct threaded one as Chas suggested so I can reuse the sunk investment in jaws.

Aye that's been my username on various forums/sites for years. It combines my two favourite RC trucks, Tamiya Midnight Pumpkin and Lunchbox.

I agree with the point about the adaptor extending from the rear of the chuck, the works one sticks out a good 50mm, it's pretty unsightly and very bulky.

Craig

 

[Random Orbital Bob]

Yeah I couldn't cope with that idea. The whole idea behind this upgrade is heavier work and that's surely going to put a lot of strain on the bearings.

 

[duncanh]

When I upgraded from a DVR to a Wivamac (M33 thread) in 2013 I had the same dilemma. Unfortunately I had 3 chucks (2 supernova and supernova deluxe) and maybe 7 sets of jaws and was used to the luxury of having 3 sets of jaws set up at all times, so I figured I'd get one new chuck (a patriot) for handling big stuff and get an exert for use with the other chucks. In the past I was a little dubious about the idea of using exerts because of the extra extension from the headstock but I haven't had any issues at all. Yes, you loose a bit of length but you also gain more working space close to the headstock.
I've since bought a used exert on ebay for less than half the price of a new one.

I generally don't use my super nova deluxe with the exerts as it's bigger and more suited to large work. A shame really as it was my first chuck and it's fantastic. I'm not sure why they stopped making it.

 

[Duncan A]

Another option is to buy a direct threaded Sorby Companion chuck and use your existing jaws on that. The Companions are about £105.

As stated earlier in the thread, a Patriot with an excert is pretty solid and does give a bit more clearance around the headstock than a direct threaded chuck.

Duncan