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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: Myford Mod
08/08/2020 08:42:34

I like the idea of the timing belt as it uses the standard leadscrew. Bought a Hemmingway kit years ago, but never built it due to other life issues and I had converted the lathe to metric, which meant making a 2mm pitch LH screw. This method removes that issue. Have both imperial and metric screws, the lathe is currrently set to imperial.

What size timing belt and pulleys did you use?

Thanks

Peter

Thread: 33mm Spanner
26/07/2020 13:22:47

Try 1 5/16" af, I used to use 3/4" Whitworth for the tow ball nut, which is actually 1 5/16" af in Australia.

Thread: The 2038 computer bug
13/07/2020 14:10:10

This has long been know. I remember reading about it in the 1990's. The issue is caused by the Unix operating system calculating time by using the number of seconds since the the first Unix computer was turned on in 1970. It can be mitigated my the OS kernel correct the clock when the 32bit time integer rolls over. Remember that we started with 8bit computers, then 16bit. 32bit only came in the windows world wit the 80386.

How many of you have a 80286 or older 8086, so don't worry about.

If you are worried about this remember there is a calendar correction due in about 2000 years time, extra day if I remember, read it many years ago.

That is someone elses problem, if humans are still here.

Thread: stuck chuck again
05/06/2020 12:32:48

Remive the locking pin for the chuck. then you can have a look through the pin hole. Use a piece of wire, welding rod etc, to feel the hole in the pulley. You should be able to see how far the wire goes in the hole.

If tehre is nothing jammed in the pullley hole use a bolt that is smaller than the locking pin to lock the pulley.

Never use a chuck key to remove the chuck and NEVER hit the chuck key. I use a strap wrench which will not damage the chuck. The strap wrench I have uses 25mm webbing. I had to put a longer lenght of webbing in to go around the 6" chuck

Peter

Thread: Braze Welding Gear Tooth Repair
01/06/2020 11:45:25

To Bronze braze you need either Oxy acetylene or Oxy LP gas. The LP Gas of any form without Oxy are good for silver brazing. Acetyle is required to Oxy weld.

Back in the early 70's that was what we were taught by the boiler making apprentice instructors. Where i was working at the time, repairing gears by bronze brazing to repair broken cast iron gears was regulary performed.

Peter

Thread: Die grinder or dremel - relieving cast iron
12/05/2020 11:32:41

Use a die grinder with a HSS burr. I have both a dremel and an compressed air die grinder. I had to remove some iron on the cast iron on the counter shaft support of a 1958 mk2 S7 to allow a link belt to be used. You can pick up cheap burrs online with either 6mm or 1/4" shank to suit your die grinder.

Peter

Thread: Myford Mk1 Super 7 restoration
11/05/2020 11:52:00

I have a Mk2 1958 S7. Did a recondition a couple of years ago. Still have a few bits to do and it missed out o a repaint as we were getting ready to move. Ahave been too busy after the the move to do much.

I had the bed reground. The hardest issue was finding a surface grinder long enough. ground the bed top and tehn converted the saddle to a wide bed. Also fitted taper roller bearings instead of the Angular Contact bearings. If you do the taper roller bearing conversion, make sure that you get bears from SKF, NSK or similar. The Taper Roller bearings are common as thehy are used on a lot of cars. Most are rubbish with too much noise/vibration. SKF have a higher speed rating.

Ended also replacing the bearing in he clutch as there was a lot of noise there. Still habe to replace the Clutch Thrust bearing and the Oilit bushes. I have the parts now, just need time.

Peter

Thread: wide guide conversion
11/04/2020 14:26:29

I futted teh gause plate a just over a year a go. No issues with the lead screw alignment

Peter

Thread: Pocketmags withdraws support for Windows 10
24/02/2020 11:52:02

The browser does not let you view it offline, which was Limpet's problem and is a common issue with the browser version.

Thread: Is there as Raspberry Pi expert in the house ?
11/02/2020 11:44:22

For reliability set the Pi up to boot and run from an ssd drive. Improves the performance and reliability of the Pi.

SD cards do not survive well the amount and will fail early. From the Pi 3 you can boot directly to the SSD drive.

Peter

Thread: Myford Super 7b lead screw end float
17/12/2019 11:20:42

I have allos fitted the Hemmingway leadscrew thrust bearing as part of reconditioning a 60yo S7. Certainly improved the leadscrew movment, negligible now.

Would say it is a worthwhile modification.

Peter

Thread: Extending router shanks
14/11/2019 13:28:28

If you look around the specialist woodworking stores sell router extensions with collets to hold the router bits, can be found with Google.

Thread: PC problem #2
23/09/2019 14:56:31

WiFi is best line of sight with no obstructions, even structures in teh house, chimneys, electric cable locations and water pipes as well as wall materials will impact the signal.

The 2.4Ghz range has better distance than 5GHz as well. We moved house recently and I decided to use the higher speed WiFi in the firewall. Bad move, the laptop gets no signal inthe office and the rest were flaky. Laptop only worked if I used another Access Point (AP) to use as a bridge. Dug out an old Cisco Wireless AP, signal better but low speed, connections more stable, laptop still does not work without the bridge.

Purchased a new high speed AP, mostly stable, work laptop still needs bridge.

Best option relocate internet point to Office, and hardwire work laptop. WiFi AP will be closter to center of the house, all should be fine.

Don't troch the antenna in the laptop, you can do nothing, if possible use an ethernet cable.

I am speaking as a senior network engineer employed by a major US telco supporting Data Center networks, I used to be Cisco certified on wireless but let it lapse as it was nto needed.

Thread: Myford 33t and 34t gears for metric threads
22/08/2019 12:42:40

RDG finally have 34 Tooth gears in stock. They are showing on their websie but not the Ebay store.

I have ordered one and it is currently in transit.

Peter

Thread: Myford Super 7 Bed for Power Cross Feed
06/06/2019 13:33:57

Just ge the bed reground. Others in your region will be able advise as to where to get ths done. If nothing else locate a shop with a surface grinde that will accomodate the bed.

I believe that there is a difference in the bed castings, certainly between the pre and post power crossfeed Super 7's. don't know if the ML7R bed is the same as the Power Crossfeed Super 7.

Thread: An old Shaper found in Phuket Town
22/05/2019 13:05:18

The machine shop where I spent my 1st 3 months as a trainee Mechanical Engineer in the early 70's had a muchl arger Butler planer. It was in regular use. That shop was built in the early 1960's.

The old machine shop, about 1928 had a vertical wall planer, also in constant use att he time but was gone by the mid 80's.

That is a small planer.

Thread: Machine moving recommendations.
17/05/2019 13:39:04

I have moved machines previously on a trailer, using either an engine hoist or chain block to load and unload. Lifting chains and web slings are used assist.

Last machine I moved like that was a 1.2t, 18" Alba Shaper.

I the next couple of months I will, be hiring a 3t trailer to move the lathe, shaper and what else I can fit on the trailer, without overloading it, 1800km.

1.5" pipes make wonderful things to move machines on a concrete floor, in conjunction with a br.

Thread: Where can I get a 2 step pulley
16/05/2019 13:11:04

If it is the Motor Pulley for a Super 7 or ML7R, Myford has it.

If you look around you will also find a 2nd hand pulley.

Thread: Myford Clutch Lever fouls the Belt Cover
13/05/2019 14:29:48

Somehting is wrong, when the clutch is disengaged, it moves away from the cover.

I can open the belt cover on my Super 7, 1958 early cone clutch when both the clutch is engaged and disengaged.

What is the age of your lathe and if an early lathe, which clutch?

Thread: Issue Reading New Digital Viewer
13/05/2019 11:20:11

Please bear in mind, that you can only store a limited number of issue with Pocket Mags app, before you need to clear all the stored issues, before you can download more on an device with fixed storage such as an Ipad or Android tablet.

Yes the tablet is better reading the current issue, but not convenient for older issues that you are trying find an article in.

When it works the archive can be better for the older issues, the inability to print is a retrograde step. I Australia we could probaly argue that consurer law has been breached by removing feature that was available whe we subscribed.

I do not know if the same would apply in the UK, perhaps someone else could comment.

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