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Member postings for Peter Sansom

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

Thread: Davy Tandem Blowing Vertical Steam Engine
08/05/2022 13:19:50

Davy Bros, Sheffield was the manufacturer of the blower. . There was also a 3 cylinder Davy Mill Engine that came out of Lithgow and and operated in Port Kembla Steelworks until the mid 1980's. Remember watching it operating in the early 70's.

The Davy Blower scrapped in 1928 when the Blast Furnace was shutdown. The horizontal Thompson blower was transferred to Port Kembla.

Someone in the UK may be able to provide more details on the general arrangement of the Davy vertical blower.

Peter

Thread: model engineers work shop
25/04/2022 13:17:58

Thanks, will ignore.

Peter

25/04/2022 13:08:05

Just downloaded MEW 315 on PocketMags and noticed there is no Page 56, it is a duplicate Page 53 including the page number.

Is this error in the print edition or just the digital edition? Is the problem page part of an article or advertising?

Peter

Thread: Why aren't carbide chop saws used?
31/03/2022 12:16:00

2 years ago I purchased a Fein -Slugger 355mm carbide saw. great fro cutting rhs, have cut up to 125mm. I have not tried it on round bar. It requires a different blade for aluminium. It is fast and accurate. They run at 1300rpm. Evolution list a chop saw at a similar speed.

Thread: Myford S7 countershaft bush temperature
25/03/2022 07:22:06

The bush dimensions are in the original units, both bushes are the same outside diameter and bore. In Australia I could only find Oilit bushes that were available were too long and expensive, but no long enough to get 2 bushes out of the one length.

OD 1.1/8"
ID 7/8"
Length short is 3/4" Long 1.25"

Peter

22/03/2022 11:31:23

I have a pair of new oilit bushes for the S7 in the shed as well as the thrust bearing. They are the last bearings I need to replace, just no time.

Will measure them in the morning. I bought them from Myfords because to purchase locally I needed to purchase 2 longer lengths of oilit which was going to cost almost the same as purchasing from Myfords.

Peter

Thread: Bench grinder to polisher
04/01/2022 09:30:33

I converted an old 6" grinder, needed to polish brass handles. Have not had any issues of the grinder stalling but if you are not careful the item being polished will go flying. The grinder is a 30 y.o. Ryobi,

Thread: Myford super7 saddle / tight toward tailstock
20/12/2021 12:37:48

You should find the top of the front shear and under the back of the rear shear. The forces of turning push the carriage down on the front shear and pull it up on the rear. Measure the thickness of the front shear along the front edge of the front shear. Maximum wear will be 4 to 6" from the headstock.

17/12/2021 12:02:21

Your lathe appears to be suffering a common problem with old lathes. Most of the wear in the lathes occur close to the head stock. If you measure the thickness of the shears you will find the front shear has more wear than the back.

The best way it to put the bed upside down on a surface plate, but this is not usually practical. A camelback can be used , if you can find one the length of the bed. I found a 900mm straight edge and with feeler gauges could determine the wear, worst spot was about 0.010". Wear is on the top of the bed.

If you look around you may find a shop with a suitable surface grinder. It needs to be able to grind the full lend of the bed, travel needs to be longer than the bed including the head stock. I ground the bed on my 1958 Super 7 this way and it solved a lot of issues. Also did the wide bed conversion at the same time.

Peter

Thread: Windows 10 "upgrade" to Windows 11 Anyone tried it?
05/12/2021 11:17:14

I purchased a new laptop 2 weeks ago, motherboard failure. It came with Win10. During the setup I was prompted to upgrade, all worked fine.

Have had more issues with Debian. old Debian 10 image would not boot. Issue was new hardware, had to install Debian 11 and upgrade the kernel to 5.14. All good but my old Win 10 image will not boot.

Thread: An unusual thread size- Stanley 78 rebate plane
30/11/2021 06:51:43

It is a US thread form 60 degree. Stanley were notorious for using proprietry thread forms.

Do you know the age of the plane? Is it US or UK manufacture.

I have a No 78 plane at home but am away for a couple of days. Also have a No45 plane with one screw missing, the hole was also stripped.Found a screw 1/4-24. Standard size, fitted a helicoil, new screw was loose, but others the same size fittted.

Will check my 78 plane when I am home.

Peter

Thread: Super 7 questions
18/10/2021 12:38:17

I remember reading a number of years ago that Myford changed at least some of the 1/4" bsf cap screws to M6 due to the old Super 7's used 2 sizes of heads, large and small. The large head 1/4" Cap screws became unobtainable and the M6 Cap screw is between the 2 bsf head sizes. The large head we used to attach the carriage to the apron.

I would assume that Myford stopped all 1/4" bsf at that time but not sure when this occured. Check the manual if you have one, else get one.

Peter

Thread: Stanley combination plane
30/08/2021 12:58:30

I have a Stanley No45 plane. It definitely uses 1/4-28 for some of the threads as I had 1 thumb screw missing and the thread was stripped, Found a screw online and used a 1/4-28 Helicoil to repair the thread. There is also a smaller size used but I never checked the actual thread.

Peter

Thread: Backing up computers across a network
23/08/2021 13:27:02

For network backups, you could purchase a NAS (Network Attached Storage). Otherwise backup to a disk attached to another pc, I use a Raspberry Pi with a couple of disks attached.

Thread: Jammed shaft key removal
22/08/2021 12:59:29

As Roy said, use a chisel to lever it out. You could clean the key with a file. The better way is to get a piece of key steel of the correct width and height, available in both metric and imperial. cut to length and finish with a file to fit. teh keyway.

You can also sometimes find a pre-made, but key steel never goes astray and lengths as relatively cheap.

Thread: Which grade of stainless steel
28/06/2021 12:24:30

303 Stainless is free machining version of 304. 304 is great for cryogenics, BOC used to make its cryogenic plants with 304 SS.

316 is better for Salt water corrosion, 321 for heat.

Peter

Thread: Myford Super 7 Motor Pulley
11/06/2021 13:38:54

The early pulleys were aluminium alloy, current ones are cast iron. Not sure where they changed.

If you are not desperate, keep looking. I ran one for years with a piece missing out of the side of the pulley, alloy. Bought a replacement that is iron, but kept the old in the case I ever purchase a 3 phase motor which would be metric and require the pulley to be bored.

Thread: Availability of a T33 & T34 Myford Change Gears?
06/06/2021 11:59:12

RDG periodically have stock. I you contact them they will let you know when they are expecting more.

Peter

Thread: Adept No 1 or Mal-adept?
19/04/2021 11:53:15

Michael

I have one the same as yours, purchased mid 90's, missing the lever mechanism. Has been sitting in pieces for 20 years due to moving house several times and family issues.

On the list to reassemble over the next year.

Peter

Thread: Anyone else having problems printing from Pocketmags this month?
13/04/2021 13:00:46

In which case Pocket Mags would be better to admit the issue is theirs rather than blaming the publishers.

Peter:

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