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Rollo Elf

Advice

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Malcolm Stubbs16/12/2013 21:35:23
7 forum posts

I have just acquired a Rollo Elf lathe, it is basic, but on the whole a fair piece of kit.

Can any one advise on the best way to check the nose spindle internal taper it seems to be too small to be a standard morse taper and can any one advise on a supplier for a mandrel so I can get a four jaw chuck.

JasonB17/12/2013 13:05:16
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This would seem to suggest it had MT tapers

IanT17/12/2013 17:05:55
2002 forum posts
212 photos

I have a Rollo Elf (hand cranked version) that I've "loaned" out to a friend (so I don't have it to hand) but from memory it has an MT1` taper.

Regards,

Ian T

Russ B17/12/2013 18:31:11
615 forum posts
26 photos

Mines MT1 yes

They're pretty dam nifty for such a small machine, reasonable distance between centres (mine the long bed), 3 speed plantary gear box allows you to change speed without stopping, screw cutting, what more do you need cheeky

Michael Gilligan18/12/2013 08:31:47
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Posted by Russell Bates on 17/12/2013 18:31:11:

... 3 speed plantary gear box allows you to change speed without stopping ...

.

I've never owned a Rollo Elf, and probably never will; but I always thought their use of the Sturmey Archer hub was a stroke of genius.

MichaelG.

Malcolm Stubbs18/12/2013 13:37:41
7 forum posts

Thanks for that Gents. All the information I have received tells me it is MT1, however all the books are telling me that MT1 is to big has the "mouth" of my spindle has a diameter of between 7.5 and 8 mm. Has any Rollo Elf owner bought an arbor to fit into the headstock spindle.

Malcolm

Keith Long18/12/2013 14:35:45
879 forum posts
11 photos

Malcolm

That sounds more like a MT0 taper - one size down from MT1. Seems a bit odd unless someone has fitted a new spindle. I might be worth looking very carefully at the end of the spindle to see if you can see a line running around on the face of it to suggest that there is an adaptor sleeve stuck in there. MT0 is pretty small and I don't think you'll find a great amount of tooling about to fit that apart from possibly watch or clock making tools, I think I'd be pretty wary of mounting a chuck on a MT0 arbor unless you've got provision to secure it with a draw-bar through the lathe spindle.

The good news is that according to the information on the lathes.co.uk website, the Elf was made with a MT1 socket in the spindle so you should have enough material to machine out to that size.

Has the spindle got a threaded nose - that usually how you fit a faceplate or a chuck via a back-plate.

Keith

IanT18/12/2013 15:34:02
2002 forum posts
212 photos

My 'Rollo' has the round bed and a simple gear train in the headstock assembly. From what I can recall though, the spindle is a simple plain one (e.g. no external tapers) - so it would be a fairly easy matter to make up a new one. The Elf nose is threaded and mine had a rather nice Burnerd scroll chuck fitted that was promptly moved to my EW when it was acquired (which is why I loaned out the Elf!)

I had originally intended to make a new spindle for the Elf with a different nose thread. The bearings are just plain CI bores (e.g. no external tapers) and this would be fairly simple to do on a larger machine (although I'd lap the new spindle to fit the existing bores).

So if you do want a different spindle, I'd suggest that you make a new one, rather than risk messing up the original. I'm not sure what the Elf 'nose' thread is but it might make sense to make any new spindle to match a more popular/modern small lathe (maybe a Sieg C0 baby lathe?)

Regards,

IanT.

Malcolm Stubbs18/12/2013 20:01:24
7 forum posts

The Elf nose thread on my lathe is 5/8 BSF, which I did not want to change as the 3 jaw chuck that came with it is adequate. As the tailstock and spindle internal tapers are the same being sure of the size is important, I will continue to investigate.

Malcolm

Michael Gilligan18/12/2013 21:48:38
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20289 forum posts
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Malcolm,

Could the taper be MT1 Stub ?

Have a look at Table 1a in this book.

MichaelG.

julian atkins18/12/2013 22:05:31
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1258 forum posts
353 photos

i do like these old lathes! a most interesting post and links!

cheers,

julian

Keith Long18/12/2013 23:29:37
879 forum posts
11 photos

Malcolm

I'm a bit confused as to what you want a "mandrel" for so that you can fit a 4 jaw chuck. If the Elf has a threaded nose on the spindle, what you need is a back-plate that you can machine to go on to that thread. Then you machine a suitable land or spigot on the back-plate for the 4 jaw chuck of your choice, and drill and tap for the bolts to secure the chuck to the back-plate. Again have a look on the lathes.co.uk website, fitting back-plates to spindles and chucks to back-plates is explained in simple terms and in detail there.

As to the socket being for a MT1 stub taper - no chance. If the small end of a normal MT1 won't enter the mouth of the socket a stub taper won't even begin to look at it as it's the "thin" end of the taper that is truncated to form the stub. Still think you might just have a MT0 to MT1 or some other adaptor stuck in there as a possibility. Is the lathe spindle hollow ie drilled through?

Keith

Michael Gilligan19/12/2013 04:31:58
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Posted by Keith Long on 18/12/2013 23:29:37:

As to the socket being for a MT1 stub taper - no chance. If the small end of a normal MT1 won't enter the mouth of the socket a stub taper won't even begin to look at it as it's the "thin" end of the taper that is truncated to form the stub.

.

I stand corrected.

MichaelG.

Ian S C19/12/2013 12:13:35
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7468 forum posts
230 photos

It could have a taper similar to the Super Adept, there is much discussion on this one, some say it is 0 MT, others say it's near to 0 Jacobs taper, just as the spindle thread seems different on some machines, mine is 3/8" BSF, on the box it has 3/4" with the 4 over- stamped with 8, while others say it's 5/8"BSF, or 1/2" BSF.

I made new centres, using hit and miss methods, and bearing blue. Sorry a bit OT, but similar problem. Ian S C

Malcolm Stubbs19/12/2013 14:41:02
7 forum posts

I only require a small chuck, so a chuck/arbour combination as supplied by companies like RDG Tools would have been the easiest solution. But it looks like I will have to go down the back plate route. As to turning centres I have not done that since I was an apprentice, but it is a possibility. The search will go on however.

Malcolm

anthony bryant04/01/2014 12:07:02
5 forum posts

I have a Rollo ELF (hand crank, flat bed )the nose thread is 5/8 BSF .I think the taper is a Brown & sharp 1 or 2 . Sadly the lathe came without a chuck. Has anyone got a manual for the Elf.

Stub Mandrel04/01/2014 19:21:03
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4315 forum posts
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Hi Malcolm, Anthony,

Welcome to the forums! I tried to find out more about the Rollo Elf from Lathes.co.uk but the site keeps asking me for a username and password!

Most odd... still it looks a neat wee lathe.

Neil

Michael Gilligan04/01/2014 23:35:58
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20289 forum posts
1064 photos

Neil,

You should be able to get to the home page ... where you will find this explanatory message:

  • Site temporally unavailable due to technical problems being suffered byFasthosts.co.uk the hosting company. It is hoped that it will be back up later today. However if you need to order manuals or parts, etc.store.lathes.co.uk is on a different server and working

MichaelG.

Russ B10/03/2014 09:09:51
615 forum posts
26 photos

I'll quickly correct myself for the benefit of others who may dig this up in the future.

The tailstock is MT1, I went to put the centre in the nose.... no chance, it's tiny - whoops!

Sorry for the bad advice Malcolm!

I'll try to gauge exactly what it might be the next time I have a need for it - One sold on ebay for £125 odd recently with a cracked bearing housing and what looks like a complete box of original accessories - I might try and get in touch with the winner and see if they can help out

- maybe they can sell me a faceplate too, if they're breaking it, as mines gone AWOL......

cheeky

Edited By Russ B on 10/03/2014 09:13:01

Neil Wyatt10/03/2014 21:53:19
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19076 forum posts
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Well, I finally got to view the pages on Lathes.co.uk - actually I have seen one of these in an old advert.

I remember endlessly adjusting those Sturmey Archer links to get reliable gear changing on many a bicycle!

I like the two arrangements of the single speed gear - gear up with a motor, down for hand cranking but use the same two gears! The hand cranked version must have been deathly slow to use!

Neil

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