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Member postings for John Stevenson

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

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Thread: What price frustration?
05/08/2010 23:45:51
Posted by KWIL on 05/08/2010 12:17:02:
Who has been the longest in that particular business area?  WARCO and Chester, Chester has apparently a direct connection with their supplying factory.
 .
 
The question should be who has the best working relationship with the factory's?
 
One of the hardest things to find out in China is who ACTUALLY makes the product?  There are many trading companies who say they do but don't. If you go to any of the large shows in Canton or Shanghai you can spot the trading companies easily by what they are selling.
 
A manufacturer will only have his products on the stands and glossy leaflets which always show the factory, usually with rows of CNC's etc.
A trading company will have a variety of products because they are acting as agents for others, so they may have a few lathes, leaflets on mobile cranes and chemical products.
 
All the larger sellers, Warco, Chester, Arc, Axminster have direct connections with the relevant factories, it's only the ebay sellers who deal mail order with trading companies.
 
John S.
Thread: Worm for Myford Changewheels
05/08/2010 16:28:14
To answer the original question you need a worm with a pitch of 6.366 TPI, the tools needs to have a 29 degree included angle and the change wheels to cut this are 55 driving 35 with a 40 driver on the 35 to a 50 on the leadscrew.
 
Do not disengage the half nuts but wind back every time.
 
John S.
Thread: Myford Super 7 power cross feed
04/08/2010 23:17:04
Posted by Ian Strickland 1 on 13/07/2010 16:54:49:
Hi,
 
Does anybody know of a mod to prevent engagement of the lead screw when using the power cross feed?
 
Thanks
 
Ian Strickland
 
.
 
 
WHAT ??
 
You mean to say that that bastion of perfect high priced engineering doesn't have an interlock ?
 
Good heavens what is the world coming too ?
 
John S.
Thread: What price frustration?
04/08/2010 00:58:55
Are we not comparing apples with oranges ?
 
There are no Chinese lathes in the same price / size range as the Myford.
There are lathes the same size but cheaper and there are lathes the same price but larger and better equipped.
 
I have just been on Myfords website to get some relative prices. The Sigma, which is the cheaper model is roughly £6,800 with basic equipment and I mean basic.
 
The Conny Sewer model is round about the £10,700 mark.
 
Now going to Warco's website their WM280 model costs £1,250 which is the same size as the Myford.
Warco's GH1640 lathe, that's 16" swing and 40 between centres is their most expensive lathe I can find at £ 7,800 Still far less than a Conny Sewer.
Geared head with hardened gears, Turcite slides, chucks, coolant, steadies, one shot lubrication
Thread: Myford alternative
01/08/2010 23:24:30
About 8 years ago I wanted a new lathe as we were falling out over the CVA, the ML7 was too small and the TOS SN50 was too big for normal day to day work.
 
To cut a long story short I rang TOS to see if they did a medium sized lathe, Colchester's were too expensive. They did a 14" swing by 39" between centres.
Now TOS whilst being  Czech has a good reputation for machine tools.
 
It came delivered to the door, literally, with every conceivable extra, except taper turning which I didn't want, 4 chucks, two tailstock chucks, two steadies, spare clutch plates, selector forks and cross slide and top slide nuts as standard. All wired up with footbrake, 2 speed motor etc.
 
It cost £5,420 including VAT, £20 more than a bare bones Myford 254 at the time.
 
Tell me how you can justify that difference ?
 
John S.
Thread: Welding Courses
01/08/2010 11:43:05
Another side of the coin is do you get value for money ?
 
Some years ago a friend wanted to go on the model engineering course at West Bridgeford Tech, so he could use machines he had no access to, like many.
 
He asked if I'd go but I declined as  we had a well equipped workshop at the time but I made enquiries about welding and was told I could learn alloy welding so signed up. to their welding course.
 
After three weeks of doing nothing whilst the lecturer set up others I collared him and it became apparent that this guy couldn't alloy weld !! No refunds were offered so I did manage to transfer the the engineering course and make some division plates but it was a let down.
 
My friend was making a 4 turret toolpost for his Boxford which entailed 1/2" wide slots 1/2" deep, he was using a massive Cincinnati model 3 or 4 mill, humongous thing, stood 17 hands high.
He drew a 1/2" side and face cutter from the stores and asked me what depth of cut, I told him to go the whole 1/2" in one pass. he set of doing this and it was thrumming away nicely until the lecturer came rushing up and bollocked him for cutting too deep and made him do it in 1/8" deep passes ????
 
 
I didn't have the heart to tell him we were doing roughly the same job on tool holders for North sea oil rigs that were 7/8" wide and 7/8" deep in one pass on a Victoria U2.
 
If you can do it then do it, if you can't do it then teach it rings true here.
 
John S.
Thread: darjeeling locomotive
31/07/2010 23:15:46
Posted by Dave Harris on 31/07/2010 22:11:52:
 My other questions seem to have been ignored re drawing standards. i will retire from this forum, very confused and dissapointed!
 Sorry ??
 
Is it that the drawings are so messed up that you cannot understand them [ I have not seen them ] or is it that you expect every drawing to be of a standard even though they may have been prepared by  someone more used to making things than drawing things ?
 
If the first then I can understand your concern.
 
If the latter then, no don't bother - forget it.......
 
John S.
Thread: Jacobs Gear Hobber
25/07/2010 21:35:01
Posted by Richard Parsons on 25/07/2010 10:24:26:
 

Some moons ago I wrote a challenge to the Editor on a similar topic. I what it said was that if you could read the rotational speed and (position) of a shaft (say of my milling machine) and factor this into a stepper motor which could then drive a shaft with a gear blank on it. Behold you have a gear hobbing machine.  The problem for me my ‘electronic’ stopped with the introduction of the pentode valve. Any one out there want to design the black box to do it?


 
Already been done.
Read MEW 108, article by Brian Thompson  also includes the circuritry.
 
John S.
Thread: Massey Ferguson Tractor on front cover of ME 4382
21/07/2010 22:58:29

Posted by David Clark 1 on 21/07/2010 15:35:02:

 
I have certainly said in MEW, not sure about ME, that I take a lot of articles, pay out about £2,000 to contributors, add another 2 or £3,000 worth of value editing them, correcting photos, redrawing, printing and delivering to Smiths. This is around £5,000 of value then we sell it to you for £2.95. If the odd articles is not to your taste, there is still another £4,500 worth of content for you to read.
 

regards David

 
 
 David,
 
You have quoted this before but can we have the figures in a true context .
You pay out £2,000 to contributors and value add [ note the buzz word ] another £2 - £3,000 making a total of £5,000.
 
Now can we deduct all the advertising revenue from this figure?
 
Last months copy had 26 full pages of advertising so not counting the cover this was 41 pages of reading material.
Now deduct the editorial and scribe a line and we are left with 39 pages.
 
Those 39 pages, as you say cost £2,000 at £50 per page.
Now I dare say you won't want to publish advertising rates, which are variable depending on position in the mag but it's not possible to buy the cheapest page for £50
 
If we take a guess and an average and say each advertising page is worth £400 then that's £10,400 before you even sell a copy

 
John S.
 
 
Probably be edited or deleted before cock crow.
Thread: Bridgeprt on an inverter
20/07/2010 22:17:16
Hugh,
To be correct the Transwave unit is a CONVERTER not and INVERTER slightly different animal.
 
John S.
Thread: Suds vs neat cutting oil
19/07/2010 22:54:28
My CVA lathe is on neat oil and it's borderline on the size of the machine.
I tried the small TOS, 14 x 40 but it works too hard and the place fills with smoke so that had to go back onto soluble.
I use Castrol  Cooledge mixed over strong, about 15:1 with about a pint of disinfectant added to 5 gallons,
Smells better and stops the health and safety guy I drowned in the coolant tank from smelling too bad.
 
The big horizontal is on oil as it spends most of it's life as a gear hobber, power saw is also on oil, but everything else is on soluble because of them working hard.
 
If I was running a hobby shop I'd use neat oil all the while because I would be able to take my time.
 
John S.
 
 
Thread: Massey Ferguson Tractor on front cover of ME 4382
16/07/2010 19:42:25
It must have been a model to fit on an A4 sized cover.
 
John S.
Thread: MEW Archive
13/07/2010 23:42:00
I have noticed this addition of the home page string before on here.
You have to do a bit of cut and paste, bit like a one armed paper hanger ?
 
John S.
11/07/2010 23:45:31
 
Posted by Sid Herbage on 11/07/2010 22:36:34:

 
Odd thing to happen on this, normally very stable, website
 
 
 Yes right.  
 
John S.
11/07/2010 22:05:44
This is what I see.
 
 

 
Edited By John Stevenson on 11/07/2010 22:07:27

Edited By Katy Purvis on 01/06/2015 12:52:02

11/07/2010 12:52:01
What's happened to issues 146 to 162.
That band of mags is missing.
 
John S.
Thread: Moving machinery
05/07/2010 21:50:27
Posted by Doug Jordan on 05/07/2010 18:20:48:
Help!!!
I've just acquired a Bridgeport milling machine and I am having major problems finding someone who can move it to my workshop. Is there anyone in the Nottingham area who can recommend a good machine movers.
Yours very frustrated.
Doug.
 
 
Yup me.
 
I'm in Nottingham, have moved 8 or 9 Bridgies now, 7 of which was done on my own.
07966 376085
 
Have to give you the mobile as I'm at Shrewsbury tomorrow picking a Conquest lathe up.
 
John S.
Thread: In search of Peter Rawlinson
03/07/2010 22:29:05
Posted by Jeff Dayman on 03/07/2010 01:44:22:
Posted by John Stevenson on 02/07/2010 22:46:30:
 so unless he's like the best whores and is ex-directory
 
 
Uh, pardon?
 
JD
 Jeff,
Bit of an in-joke.
Apparently all the high class call girls are ex directory, you  have to make contact by recommendation, or so I'm told.
 
I use this as a stock phrase as my engineering repair business isn't in the phone book either, nor does it have any signs at all, all work comes as recommendation.
 
John S.
Thread: ME Binders
03/07/2010 12:28:57
I also use the Ikea holders but not for MEW.
I use them to store folders and other trade leaflets in the main office where they are stained to match all the shelving.
 
MEW's are stacked in the  old RS boxes that the catalogues come in, not as neat but they hold about 50 copies per box.
 
John S.
Thread: In search of Peter Rawlinson
02/07/2010 22:46:30
Now that it's mentioned I can remember his doing the print on demand books.
However a quick web search doesn't show anything so unless he's like the best whores and is ex-directory he's making it hard for anyone to buy his product.
 
John S.
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