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Member postings for Nick Clarke 3

Here is a list of all the postings Nick Clarke 3 has made in our forums. Click on a thread name to jump to the thread.

Thread: Weight and transportability of a Myford lathe
27/01/2020 14:59:58

Perhaps look at a graph of half life or capacitor discharge?laugh

Thread: Why does everyone disagree with you
27/01/2020 14:53:30

I don't get it right every time!!!

BUT

  • I accept any information from someone else who has direct experience should be respected - but there may be another way as well
  • Any information from someone else with allied, but not exactly analogous experience may be of interest.
  • Comments that say 'it can't be done' or 'do it this way or you are wrong' should be treated with caution.
  • Contradicting someone from your experience is OK but knocking them isn't
  • Thread drift can often be interesting and fun

And finally anyone who hasn't exactly the same sense of humour as me should be taken out and shot now (That was another joke, by the way!)

Thread: Leaf springs
27/01/2020 14:40:57

A couple of thoughts - firstly the spring material you have bought will, according to some supplier websites, need to be heat treated and secondly you can perhaps work out the loading on each of the six springs on a best guess principle for a maximum water coal and driver load plus sprung weight of the completed tender.

Alternately input Martin Evan's spring design into one of the leaf spring desing formulas on the internet. These springs are of a relatively simple desigh with only one full length top leaf and single leaves of the other lengths so you should be able to obtain an approximation of their deflection under load to compare yours with.

Unfortunately your proposed springs with multiple leaves of each length are a harder problem to calculate (at least to someone who last looked at spring design at Uni nearly fifty years ago and never since!) so doing the same for yours may not be an option.

Thread: Opinion on using blue Loctite (thread locker) on clocks?
26/01/2020 12:25:21

Martin Evans (not the current editor of ME, the one before) came and gave a talk to the society I was a member of then and showed us a crankaxle for his Princess of Wales design built up and Loctited.

This generated a load of discussion and correspondence in the club newsletter with some saying 'Its not engineering, its a bodge' etc etc

This was 1971 ………………. !

Thread: Leaf springs
26/01/2020 12:03:30

Conventionally, when making leaf springs to scale they are far too stiff, so the solutions are either to slot the leaves, replace some or all of them with Tufnol or similar or to replace each leaf with a number of thinner ones, so I suspect your springs, if each leaf is made up of a number of thinner ones will be softer not harder than as drawn.

As a 7 1/4" locomotive the driver sits on the tender so it has to be able to take a reasonable amount of weight (particularly in my own case!!)

The club Highlander is off the rails at present awaiting a new boiler and repairs, but I can have a look at/take photos of the tender next weekend if it helps.

Nick

Thread: What a nightmare
25/01/2020 09:33:11

I asked a police civilian investigating officer about this a bit back and he said that while a clip from a dashcam can be useful in the case of an accident, the ease with which videos can be edited today makes any video evidence without a timecode track to show where it has been edited (or not) of little use if a case comes to court.

Thinking about it, I think it would be perfectly possible to superimpose a time of your choice on the footage and say it was recorded then for example.

Thread: I wish mine was like that!
24/01/2020 15:14:31
Posted by not done it yet on 24/01/2020 14:41:43:

I watch prices of machines I own

I am quite the reverse - If I need it, it is not silly bad value and I can afford it, it gets bought - and after that the price is forgotten - especially in the case of things bought to do one job - any use after that is a bonus!

The only problem is when 'if I need it' morphs into 'I want it'

Thread: Where Can I Get Machine Handles?
24/01/2020 12:05:20

Arc Euro do some, but just the same as those from wds above they are metric thread - look under machine spares

Thread: A change of scale.
20/01/2020 18:30:06

What is the drawing of?

If it is a traction engine or an engineering model then 1" scale is used - but if it is a locomotive then 5" gauge is not always 1" to the foot - as Wikipedia says -

For standard gauge prototypes at 5 inch, the "official" scale is 1​116 inch per foot or approximately 1:11.3. Alternatively 1.1/8 inch per foot is adopted, allowing a scale of 3/32 inch per full size inch.

Thread: Apologies for raising this again
19/01/2020 14:30:39

Attach the flywheel to a faceplate as you suggest but turn the teeth off with a trepanning cut so no intermittent cut. In effect you are cutting off what amounts to a thin 'ring gear'.

 

 

Edited By Nick Clarke 3 on 19/01/2020 14:31:37

Thread: Lathes as bling!
19/01/2020 09:45:26
Posted by larry phelan 1 on 18/01/2020 16:36:01:

Mike, we all know what happened to the English motor bikes, they never moved with the times, but the Japs did !

My Francis Barnett hardly moved at all!

Thread: Electric welder at Lidl
18/01/2020 13:09:12
Posted by Dave Halford on 17/01/2020 21:05:53:

Usual issue with cheap welders - a high-ish minimum current so it might be a hole blower on thin or rusty stuff.

Gasless wire is nearly as messy as stick welding.

Totally agree with the comment on gasless wire, but horses for courses - if you are lying on the drive trying to repair a rusty car the shield gas can disappear with the slightest breeze while a gasless weld, although far more grotty to look at, will have welded OK.

Its what angle grinders were invented for smiley

The issue with cheap gasless welders is that they are often gasless because you don't pay for a regulator or a bottle of gas in the box and that all helps to make them that few quid cheaper.

Thread: Lathes as bling!
17/01/2020 13:56:40
Posted by JA on 17/01/2020 13:30:16:

When I go to Slimbridge to look at the ducks there are people wandering about the place carrying £10,000+ of camera equipment around their necks so I feel the money is there. OK, I know it is bling. Perhaps we should do the same!

JA

I agree - Slimbridge is not too far from here so I shall make a point of going there with my lathe hanging around my neck smiley

Thread: Online ME index
17/01/2020 13:48:07

Indexes for the magazines used to be available printed on paper for a nominal sum plus SAE from the publishers - references in the online ME index to indexes appear to be exclusively to announcements of their availability, not an index as an article in the magazine. The online index at **LINK** suggests that indexes exist for many years from volume 4 onwards.

Bound volumes usually, but not always have the printed indexes included - that is what they were produced for so the easiest way is to find a bound volume and look for the index in there. Some ME clubs have complete sets of bound volumes.

My local library used to be able to get loan volumes from the Library for Science and Technology at Boston Spa in the UK, but I don't know if this even exists anymore. A local university might be another option.

Thread: Steam operated drain cocks
16/01/2020 22:00:09

Looking at the index to Model Engineer at **LINK**

There are two references to 'Steam Operated Draincocks' but that doesn't mean there are not others under references to particular model designs.

Model Engineer 2007 Volume 198 Issue 4292 Page 143
Model Engineer 1985 Volume 155 Issue 3758 Page 165

Thread: why does my makita go pop occasionally ?
16/01/2020 21:50:33
Posted by gerry madden on 16/01/2020 19:49:51:

I found the original instruction booklet at home from when I bought the tool and the diagram in respect of the switch and capacitor didn't match with reality very well at all. Its almost as though my variable speed version was a short-term upgrade that wasn't expected to be in production for long so they didn't waste too much time on documentation But if some OE parts are still available I might just buy them to keep the old girl going.

Gerry

Have you had the drill from new?? Although not the same brand, it was not uncommon to add the variable speed switch to B&D drills that were originally single or two speed - I have done several myself.

Edited By Nick Clarke 3 on 16/01/2020 21:50:57

Thread: Windows 7 support ends
16/01/2020 12:15:04
Posted by SillyOldDuffer on 16/01/2020 11:11:12:

................. hideously dangerous if you bank online, do lots of online shopping, blab on Social Media and buy porn from the Russian Mafia...

Dave

Buying porn????? - I have a hard enough job avoiding the stuff falling into my inbox as spam without going out and actually wanting to pay for it.

16/01/2020 10:17:29

If you are a club secretary, treasurer or similar you may need to update to receive security updates to be seen to be ensuring data security under GDPR - but that is an entirely seperate minefield still!

16/01/2020 10:15:50
Posted by Bandersnatch on 15/01/2020 22:01:08:
Posted by Windy on 15/01/2020 11:08:41:
PC World recommends not using IE if still on Windows 7 as not security supported on that 7 system.

FWIW, according to Microsoft, security updates for Win-7 are only ended through Windows-update. They will still be providing Win-7 security updates via a paid subscription. (I won't bother).

I am not certain these are available for retail or OEM customers - only volume licencing or Cloud Solutions

Thread: British Transport Canteens...
14/01/2020 13:53:55

At school 50+ years ago the school Railway Society (an amalgamation of the Locomotive Society and the Model Railway Club) used to meet Friday lunchtimes and several times a year we used to show British Transport Films - free to the school except for the return postage. All are now availble on dvd and many on Youtube or BFI as well.

We used to charge a nominal fee as far as I can remember, but as projectionist (they were all on 16mm) I got in free.

Favourites included 'Elizabethan Express', 'Giants of Steam', 'Snowdrift at Bleath Gill' and 'Lets go to Birmingham' and of course 'Night Mail' if the Benjamin Britten score is not too modern for you.

'A Letter for Wales' is only available on dvd but has some good shots of steam locos and a Hunslet quarry tank at work in its original setting.

An amazing film showing exactly what NOT to do to stay safe near the railway is 'The Finishing Line' Full version is 20min with lots of fake blood and gore!'

Nick

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