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Member postings for George Jervis

Here is a list of all the postings George Jervis has made in our forums. Click on a thread name to jump to the thread.

Thread: Coolant pipe seals
08/11/2018 13:38:35
I've put a picture in my gallery and I've just measured the diameter of where the pipe goes into the elbow and it is roughly half inch. The rubber seal looks like it's supposed to pass partly through the clamping nut and squashed into place but leaving the elbow joint partly flexible.
I'm not having much joy putting pictures on here but their is one in my album
08/11/2018 13:03:45

Hi everyone,

I have recently brought a coolant pipe (epay) for my lathe, so I can replace the leaking plastic thing I have. I need to replace the seals on the elbow joints but for the life of me i can't seem to find any where to buy them?

Would any one be able to offer any help please?


Thread: Forum message system
04/11/2018 11:33:33
Hi Bill,
Your not the only one having problems with the messaging system. I've tried several times to enquire about items most recent the raglan 5 for sale and only had one reply out of several messages sent so have given up trying

Thread: Taper turning
30/10/2018 12:06:20
I don't own a boring head (yet) and theirs plenty of other ideas for my projects in the future? Has anyone made their own taper turning attachment? I seen a few ideas on YouTube I know on the little John lathe I'd have to remove the cross slide nut for it to work.
30/10/2018 08:00:21
Hi everyone,
I have a raglan little John mk2 lathe and I need to cut a long taper for a project. The taper turning attachments for my lathe are as rare as hen's teeth and cost more than my lathe is worth. I was considering a mt2 taper adapter for the tail stock but had the thought why are tail stocks made to be off set for this kind of work but are so difficult to recentre after use? and why not put a basic scale on them that could be used at a rough/set distance from the chuck to produce a said taper angle?
Just my thoughts
29/10/2018 18:33:27
Hi everyone,
This might be a silly question? If you need to cut a long taper and it's not practical to use the topslide, why is it that most manufacturers if any? don't put graduation on the back of the tail stock to make it easier to off set them for taper turning?

Thread: 3 phase converter help needed please
06/10/2018 10:23:01
Hi John,
My apologies everyone for not treating. everything is almost sorted now I can control the speed with the potentiometer which makes things a lot easier controlling the speed. The only issue I have is translating the motor plate and inputting the parameters into the converter? I used my rpm meter to find the top speed of the motor (1300rpm) and set that into the HSP setting so not to damage the motor. But at the moment it's usable but I'm taking it easy as I learn more about 3 phase
Many thanks for all the help given
29/09/2018 15:46:32
Hi everyone,
Well I finally got it wired up and running it did indeed need a switch wiring in. I've now got a potentiometer to work out how to wire in and it'll all be all done?
25/09/2018 15:47:14
Hi John,
I've already got a cabinet to put it and a on off switch just waiting for a potentiometer now, I found it jumped from one speed to the next as I adjusted SFP. I made the mistake of turning it off when it was still on full power testing it, when I turned it back on it made me jump going straight to full speed. I've adjusted the ACC to 4.0 sec and DEC to 4.0 sec instead of the original 0.3 it was on. so it Accelerate and decelerate slowly now all fun and games sorting it out
25/09/2018 11:41:27
Hi John,
I think it's fantastic that people can come together on here and help one another. I feel a bit lost when it comes to electronics now. Since I lost my dad he was fantastic with things like this he was a electronic engineer on the missile testing range on benbecula. So anything electrical or mechanical/lathes work was just a phone call away
But it's nice to have the help again from everyone
25/09/2018 10:19:00
Hi everyone
Well I've put a switch on today and the motor now RUNS finally, just need to buy a potentiometer now to control the speeds as the motor is running at a slow speed.
I would like to thank everyone on the forum for helping fixing this with me
24/09/2018 22:33:41
Hi everyone,
I live in mid Wales (Newtown Powys SY16) my friend (sparky) who supplied the vfd had sent me a message saying to try a switch like suggested he has a couple of spare converters identical to mine and earlier he put a switch on and it worked so hopefully in the morning I'll try and see if it works for mine
24/09/2018 18:30:59
Hi John
Just before I left for work I did try lo+ to +24 but again nothing happened I have been given another combination to try but that'll be tomorrow morning as I don't finish work until 22:30
Thank you for the continued help
24/09/2018 12:46:58
Hi everyone,
I've put some more pictures in my album to show were I'm up to.
I've been in touch with my electrician friend who gave me the it, and we've been slowly going through his list of things to try. There's still no luck with it so far but thought I'd keep everyone updated as to how it's going or if anybody else has any more input that can help

Edited By George Jervis on 24/09/2018 12:48:17

Edited By George Jervis on 24/09/2018 12:48:55

23/09/2018 20:37:38
Hi Martin,
The converter is plugged straight into the house mains via a 13amp plug and the motor is wired directly to the converter with no switches inbetween.
The original switch on the mill you may see isn't connected to anything anymore.
in my rush to get the 3 phase motor on I cut the wire to the single phase motor and and switch that was on the mill originally
23/09/2018 18:57:11
I'll have to try that tomorrow morning and I'll let you know what
happens, fingers crossed

Thank again everyone for trying to figure this out
23/09/2018 18:39:32

This is were I could have gone wrong ? Does this mean I have to have a separate on off switch?

I had a few years ago a 3 phase converter on a large drill press that I just pressed the enter button for on or off and used the arrows up and down to increase or decrease the speed but I have sold that now. I had assumed that this 3 phase converter would be the same??


23/09/2018 17:43:19

Hi Martin,

I've put some more pictures in a album of the wiring to the motor and converter

The wiring I've used is 1.5mm2 sc 4 core

Converter wiring as follows

U is wire 3

V = 2


E tm earth

And the motor is wired too

U1 is wire 3

V1 is 2

W1 is wire 1

Earth is E

I'll try and write what the parameters I have on the converter at the moment but this might not be on here until later or tomorrow morning.

Many thanks again for the help


23/09/2018 16:48:21
Hi everyone,
Thank you for the continued help I've managed to check and it's set up to 50Hz and L2A is on YES as well, but still no joy?
One of the parameters say I have 235 to 236 volts going into the converter so I have enough voltage going in.
Knowing my luck, it'll be something really simple lol (I hope)
23/09/2018 13:05:39
I've managed to print out a copy of the Manuel and followed it best I can but still no joy it seems like the parameters are locked and can't be changed? So inputting the motor plate info can't be done? I checked the wiring again today that's okay. The motor is brand new from "the motor company" aka (TEC) which are about a miles ish from my home so no postage to worry about damage.
Has anyone got any ideas please

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