Member postings for old mart

Royal Mail will deliver batteries in certain circumstances. I have sold two cameras which included their removable batteries. I was asked what was in the box, and replied "a camera with its battery fitted". That was ok because the battery was in its intended place. I have had batteries delivered via Royal Mail several times and strongly suspect that the senders had not been honest when posting them.

I wonder if the guarantee was longer than a week?

The hole in the front of the chuck body maybe an oiler. Shame about the front of the jaws, I would carefully face them back using a carbide tool, and reshamfer them. Do you have the outside jaw set?

Edited By old mart on 19/02/2023 16:26:21

My Royal Enfield twins had bronze valve guides, they must not have any sort of seal fitted like most cast iron ones do.

Bronze and stainless steel are not the best mixtures because of the chrome in the stainless.

Edited By old mart on 17/02/2023 21:08:03

Is electrolysis the source of the hydrogen that will power the super clean motors?

The first thing I noticed about the lathe pictures is that it has no sign of being abused, in fact, it looks almost unused.

I'm a sucker for something unusual and cheap, so now I have bought a 98mm diameter rotary table top and have to make into something useful. Maybe it could go on a tilting angle plate, or be drilled underneath for indexing, say 64 and 50 positions. Any suggestions? The hole in the middle is 3/8"

**LINK**

Edited By old mart on 16/02/2023 18:11:36

The only thread that size that I was able to find is the er25 collet nut thread, not quite the best mount for that chuck. 33mm is the closest I could find, but the pitch is much coarser.

3hp or 1/2hp as the motor plate indicates? With the lower power motor, you would be best advised to get a new motor. The mounting and spindle would probably be different so it would not be a straight swap with the old one.

**LINK**

There are capstan attachments made for some of the Smart & Brown lathes which probably could be modified to fit your lathe, you would need a mill for the mods, though.

**LINK**

This is where having thread gauges in inch and metric would come in useful. 1.5mm pitch is 16.933 tpi and that would be relatively easy to gauge, but not easy to measure an internat thread.

Edited By old mart on 14/02/2023 13:48:27

I looked on Lathes UK at Hauser and their rotary tables and couldn't find a match. Too many differences between the 160mm and your 6".

Very clever, I had never thought of such a thing.

**LINK**

I have milled a block of aluminium in a similar fashion to Diogenes II one, but I hadn't thought of the "flexure" design and may have left the gap too wide relative to the bed width. I will find out tomorrow when I go back to the museum. The collar on the rod is also a useful thought.

Back when I smoked, the Rizla red and green papers were 0.0015" thick and the blue were 0.001".

Rotring, Edding and Pentel make paint marker pens which would be worth looking at, easier than a brush for some tricky jobs.

Anyone noticed the set true chuck?

Thats a tragedy, it will cost people quite a lot to bring their vans and bikes over to the UK mainland to compete. I had never thought about the insurance needed for the sport. I assumed that each competitor had insurance.

I agree with needing a proper switch, I would add a no volt on off with an emergency button. A lot of Myfords came from the factory with just the reversing switch, my boss when I was an instrument mechanic bought a brand new Super 7 long bed and that only had the reversing switch. It was used as is and we knew no better at the time. The reversing switches are expensive and parts are not that easy to come by, that is a good reason to add a proper switch and only set the reversing switch when switched off.

https://www.axminstertools.com/kedu-kjd17b-nvr-switch-230v-1ph-102532?glCountry=GB&gclid=EAIaIQobChMI7fTagcaL_QIVycLtCh0Y7g1bEAQYBiABEgKMpPD_BwE

Edited By old mart on 10/02/2023 18:09:12

I am thinking of a variation on the 254 stops which can be locked at any point along the bed rather than a bolted on fixture at the left hand end. The fixed type would be more suitable for a shorter lathe, the Atlas is 24" between centres. I made two for the museum's Smart and Brown model A to go either side of the saddle, but they fit on the inverted vee of the bed and are simpler to design.