Recommissioning lathe size of hole to cut for belt

Martin, if you look on the lathes.co.uk website at the Drummond pre 1921 3.5" small lathes sections, you'll just be able to make out the travelling steady originally meant for your lathe - it's a rather peculiar "F" shaped affair. The top slide on your machine is not the original, is the cross slide still as Drummond intended, if not you might find you have to make a travelling steady to suit.

Keith

Ah , Yes the slide. no it came like this am quite happy with it and it works well , I think its from a myford.

By traveling Steady you mean something like this https://www.youtube.com/watch?v=yfATsgSM9E0 . I think it was supplied with the other steady i have because of this.

Thanks Kieth

Hi Frank , this is the spindle with the chuck removed. How did you make the adaptor for the myford sounds quite complicated. This is measured on the shaft the chuck slips over the other is .988"

Here is the thread it attaches too

Edited By Martin Newbold on 13/04/2016 14:42:14

Hi Frank or anyone have been using EP80-90 gear oil to lubricate my bearings but this seems to stick them up . Could you tell me what you are using and if its any better please . I managed to thin it down with jack oil and un bind it but this seems to thin. can you help as not sure what to get

Regards

M

Well have been advised of car oil around SAE30 is better for bearings am trying 25/50 at present which seems a better oil for this. Am still having problems with motor and lathe slowing down and loosing torque

Martin

Edited By Martin Newbold on 15/04/2016 17:07:29

Martin

You have a PM.

Keith

Thank you Kieth , My motor and drive is back in boxes today waiting to see what the supplier will do as I have been experiencing issues with he drive not working under load and producing 2cm sparks on the machine head. The support of this organisation has been trying to make this work for nearly a month

Here is what the Director of the company said was inconclusive about the lathe with the inverter drive and motor they sold me trying to cut a 3mm hole

https://youtu.be/eHi2KdR2s7s

Edited By Martin Newbold on 19/04/2016 21:40:25

Here is the lathe sparking which the company director had no comment about

I wrote to ABB today to see what they will say about this matter

Sent inverter back to ABB for testing and to see if it was faulty. Will not recommend or purchase from the shoddy firm I purchased these parts from again. They have not done much to resolve their goof.

The crappy people I bought the inverter and the motor from have said that people on this forum told me to use a 0.75 kw motor and Drive .

Can anyone find any recommendations from this forum in this regard as don't believe them

Thanks

Martin

That looks scary. I know next to nowt about electricity but it looks like the motor is trying to earth to the stand ?

I would get an electrician to have a look at that before I switched it on again.

Hi Martin I think you have a non standard spindle ! early ones 02-03 had a 3/4 w, late 03 onward 7/8 w spindle nose thread.. A myford type adapter is simple enough just a flanged bush threaded inside to suit spindle nose, thread the outside to 1 1/8 w. while your at it 24x1.5mm is another handy size to have.. As for the tumbler gear not to hard to reverse engineer though you may need oem type L shape banjo. The non standard spindle may make things a little difficult !.......b

Hi John Inverter has gone back to AAB as the dealer would not handle it a well known internet company with supermarket in its name . The Motor TEC have been in contact with them and expecting a call today . Its lucky I had the lamp on it as it took the brunt of the load discharge not me thankfully.

Hi Bodge , Yes have some castings now from a wonderful chap and have started cleaning them up . Have learned that the sleeve at the gear end is 2" and slightly longer than the 1.5" which is normal . I have not taken it off as yet to see why or if it can be shortened. Have seen some conversion adaptors on Ebay for chucks and nose spindels not sure if they would fit then. This was fitted when it came I could not tell you if its been adapted or if its original. either way I believe I can bush the tumbler am making out if this is not something i can shorten

I have put this in my chuck to see how I can clean it up . But will have to use a friends lathe when i can as mine is no longer running with the inverter and Motor current issues.

Edited By Martin Newbold on 29/04/2016 09:46:45

Edited By Martin Newbold on 29/04/2016 09:53:01

Edited By Martin Newbold on 29/04/2016 09:55:04

Hi there Bodge,

Here is thread on my lathe 3/4" w so probably 02-03

Hi Martin

Could you please measure major out side dia of the thread, because your caliper is showing an inch near enough on the register and im not seeing any step down to 3/4 in. the point being if you cut a ten tpi whit thread on 2 inch dia bar your gauge would still fit perfectly showing you had 10 tpi witworth 55* thread, i dont know for sure but i think the dia stamped on the gauge just refers to it being an industry standard in as much as you can buy a tap and die that size ie 3/4 in. As for year of manufacture i think you have a really early one, what might be called a pre production model ........b

Bodge . I think that is the shoulder you are referring to . The thread is.major 09845" or about 25.1mm. The gauge I used was a Draper No 553 BSW 4-62. It was made in West Germany if that helps I think the G is tome German na,e as its TPI as in 10 

Edited By Martin Newbold on 30/04/2016 10:08:24

Martin. As i understand it that would make it a 1 inch by 10 tpi w spindle nose thread, To be 3/4 x 10 the the od of the thread would need to be a few thou less than 0.750 inch.........b

Hi Kieth

Am slowly obtaining these parts for this tumbler reverse gear . They are quite hard to find you are right about that , I just need one more 20T 14DP gear to finish the gear parts. Have been laying them out to see how they will interconnect , Geoff has been lovely and am so pleased to have the castings . Which I never thought I would obtain and have to make from steel block.