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Member postings for Johnboy25

Here is a list of all the postings Johnboy25 has made in our forums. Click on a thread name to jump to the thread.

Thread: Brook Compton 1 phase motor KP6345
28/03/2020 18:49:30

Are they ‘crush’ washers to take up end float on assembly? Smooth side out the crush against the end housings?

just a thought - I haven’t strip one these before...

Thread: Colchester Student Mk1 Won't Start
25/03/2020 18:53:21

Hi Richard. I agree with ‘Phil on this. 👍


24/03/2020 17:45:42

Sorry - didn’t see your latest post before hitting ‘send’ button. It’s 3 phase and if you’re in the uk or Europe, it will be 400V.

As Phil said - you could use 230v if you’re got a Neutral on hand in the control box or where it’s fed from but that will need a bit of modification to the wiring.
Again as Phil implied it would be easier to get a 400/440V coil or change the contactor out for a 400V version.


P.S. Don’t use it as it is - you’ll burn the coil out. 😳

P.P.S. Chana are Telemecanique knock off’s.

Edited By Johnboy25 on 24/03/2020 17:47:00

Edited By Johnboy25 on 24/03/2020 17:52:01

24/03/2020 17:37:03

Is your lathe single phase or 3 phase? Could you send a photo of the motor info plate?

Thread: Boxford AUD clutch
24/03/2020 16:08:10

If my memory serves me... I seem to remember see a clutch fitted as an optional extra. If I can find any other details I’ll see another notification across.


Thread: At my wit's end - need help please
16/03/2020 19:29:09


Any photos of the wiring you have? That will help to determine what it is. You will need a multimeter for measuring continuity and winding resistances. If you don’t have can you borrow one?

Regards John

Thread: Electronic Lead Screw Project
27/02/2020 11:32:36


‘Thanks for that - I’m just starching the surface with C++ so this is helpful to me.


27/02/2020 09:45:38

Hi Dias

If you’re looking for the fast scroll mod/hack it’s here:-


It took me a while to get the code inserted correctly - I had help from a friend who’s an experienced C++ programmer as my C programming skill are a lot be be desired! 😳

I will look at the code file to find where it inserted for you.

I really think this is a useful mod.


Edited By Johnboy25 on 27/02/2020 09:48:10

Thread: Cable Gland
25/02/2020 15:59:44

Clive if it’s ran before and you can switch of either by the stop or E-stop - you must be pretty close to finishing it.👍Don’t give just yet! I don’t know how far you are away from me but if your local-ish I’d happy to pop over to check it out. If not you could PM me with a short video?


p.s. If you don’t ask you won’t learn by your endeavours


Edited By Johnboy25 on 25/02/2020 16:02:26

Thread: What sort of things inspire you?
25/02/2020 15:19:11

What inspires me - seeing a highly detailed model in a working condition. Watch & clock makers come close too. I take my hat off to them...

Thread: What sort of things DO NOT inspire you
25/02/2020 15:15:38

Yes - I can not see the point in ‘body art’ on the basis my human frame is deteriorating quickly enough with old age without having tattoos making it look worse! Who or what designed the human body did in my option a pretty good job without embroilIng it with what ever someone thinks that ‘it looks good”! 😋

(yes I know - I’m an ‘old git’🤭

Thread: Cable Gland
25/02/2020 14:58:05

On some of the overload relays/trips the red button can be configured to auto reset or manual reset. I can’t remember if your type of DOL has this but if your using this to stop the machine there won’t be be a problem with having to manually resting the trip or by using any of the E-Stops (hope that makes sense 😳

Good point Emgee regarding the control coil A1 connection - it may be connected - it needs to be checked so that the contactor does ‘holds in’ when starting.


P.S.. Looking at the photo I think the red needs to be linked across NO to A1 that comes from the push button. So that the coil holds in once your finger is removed from the on button. 
Disclaimer: I can see the top of the connector block. 😳

Edited By Johnboy25 on 25/02/2020 15:05:12

Thread: Electronic Lead Screw Project
25/02/2020 14:31:15

Has any else made the mistake I made with led & key module? I measured the pitch of the led’s & tactile switches a couple of times and convinced myself they were on an 8 mm pitch! - Wrong! The switch are on the ‘industry’ standard grid of 0.1” (2.54mm) so the pitch for the switches & led’s came out to be 0.3” I only noticed this after I had milled the box lid in what I thought was quite an expensive little box! Should have know better - still ‘can’t win ‘em all’!

I’ve added the software mod from JonWoellhaf on github for the push button fast scroll mod - works great. A useful hack which I think improves functionality. The original hardware worked first time out of the ‘box’ after head some scratching with the TI ccs software. 👍Now to procure synchro belts & pulley’s to fit onto my metric Boxford 4.1/2” lathe. This is a great project it’s kept my attention from the first few YouTube videos. Well done James at Clough42!


Edited By Johnboy25 on 25/02/2020 14:32:52

Edited By Johnboy25 on 25/02/2020 14:35:59

Thread: Cable Gland
25/02/2020 08:06:12


that’s fine - your diagram concurs with what I was trying to describe.👍


24/02/2020 22:10:59

Photo Sorted. 👍

the cabling to the E-stop would better in two core flex. 3182Y if you haven’t got two core standard 3 core 3183Y and ignore the green/yellow earth.


Edited By Johnboy25 on 24/02/2020 22:16:33

24/02/2020 22:10:43


24/02/2020 21:58:09


it’s consider good practice to keep control and power separate and i’m being a bit old school 😳 The middle terminals are only the connections between the contactor and over load relay - no wiring should be connected to these terminals.

can’t get the marked photo to load up...

24/02/2020 08:52:34

Hi Clive

you mention the motor is rated at 1.5HP Full Load current of 6.9 A. A 1.5 mm flexible cable would be fine.

have a look at **LINK** for cable ratings.

i would prefer motor supply separated from the control/E-Stop circuit.


23/02/2020 18:52:44

Clive, Emgee beat me to it!
I concur with Emgee’s configuration. It’s good to see e-stops being fitted. The size of earth or as its known these days - circuit protective conductor (CPC) only requires to be 1.5 mm (squ) green/yellow. This is to provide a sufficiently low low resistance to take the trip/fuse out if a short occurs.

Keep us posted on your progress.


Thread: Best Milling Machine Ever????
23/02/2020 17:38:01

I bought what I considered the best - a Bridgeport BR2J2 Series 1 👍

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