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Member postings for David Clark 1

Here is a list of all the postings David Clark 1 has made in our forums. Click on a thread name to jump to the thread.

Thread: Jan Ridders Pressure-controlled Two-stroke engine
20/05/2009 07:58:31
Hi There
I will see If I can contact Jan Ridders.
Sounds like a problem with a design fault perhaps.
regards David
Thread: Ayesha 2 1/2" articles
19/05/2009 19:55:45
Hi There
Plans are available from the designer, Tony Weale.
I can't post his details until I have asked him.
regards David
Thread: valve springs
19/05/2009 16:30:51
Hi There
I can't help you with the springs but there are a couple of minor errors on the Zephyr plans.

Errors are (as reported) the piston will not fully uncover the exhaust and transfer ports in the cylinder liner. To correct the error, the con rod should be 1.320in. centers, not 1.375 in. as drawn.

To avoid excessive clearance in the cylinder head after shortening the con rod, the combustion chamber should be reduced to 0.125in. depth and the spark plug seat should be spot faced 1/16in. deeper to suit the plug.

The spring steel blade is 1/32in. but is to stiff so 0.018 spring steel should be used.

Use these modifications but be careful. Double check as you go.
regards David

Thread: lathe tool cutting oils
19/05/2009 14:39:10
Hi There
I use cutting oil.
Arc Euro Tade sell MWC I think which is Metalworkers cutting oil.
Soluble is not ideal especially if you have a digital readout.
The modern synthetic soluble oils can sting if you have a cut as well.
regards David
Thread: Machining cast iron
19/05/2009 12:53:14
Hi There
Stuart castings are excellent.
I doubt you need to worry about the tool going blunt.
When that book was written I suspect they were still using carbon steel tools.
Modern high speed tools should be fine.
Thread: Titanium
18/05/2009 18:20:55
Hi There
You could try posting a classified wanted advert.
Titanium is not that bad to machine. It is soft but abrasive. it dents easily if you hit it with a hammer. Use about half the speed you use for steel and you should be ok. Don't try to drill it unless it is clamped downor in a vice.
regards David

Edited By David Clark 1 on 18/05/2009 18:21:37

Thread: brazing/siversoldering
18/05/2009 15:21:00
Hi There
Depends on the size of the job.
For very small jobs, you can buy a torch from B&Q that runs on propane but with something added to make it burn hotter. I think the fuel is in a yellow can, could be called knap gas or similar I think. The can has a threaded end to take the torch. Basically it is a blowlamp.
I think that would comfortably handle up to a gauge one boiler.
regards David
Thread: Material Suppliers
18/05/2009 15:17:33
Hi There
If still trading, Dorset Metals.
I think they are at Ferndown Industrial Estate Dorset.
regards David

Edited By David Clark 1 on 18/05/2009 15:17:51

Thread: GWR Metro pdf copies of the orginal articles in ME
18/05/2009 10:12:09

Hi There

We can put PDF's up.
Watch this space.
regards David


17/05/2009 17:13:16
Hi There
I did say PDF's would be on the web site.
Should be easy to host but there are no facilities on this web site to do that.
It is a custom built site and PDF's were not considered.
We are looking into it and hope to put PDF's on soon.
regards David
16/05/2009 21:39:48
Hi There
I have all the magazines but it will take a while to turn them into articles.
I don't think there are facilities to host PDF's on this site.
regards David
Thread: Congratulations
16/05/2009 12:38:54
Lots of articles that have been printed in past issues of the magazine will be scanned and OCR'd into articles on this web site. The site does not offer the easy option of putting up loads of PDF's. Only articles that we own copyright to can be put on the web but I do have lots of letters from readers that allow me to put their articles onto the web.
regards david

Thread: Articles in MEW magazine - total noob here - what type of material used!!
16/05/2009 12:33:17
Hi There
Welcome to the forum.
Clamps are best made of mild steel.
regards David
Thread: Charlie - A southern Railway Q1 locomotive in 3 1/2in. gauge
15/05/2009 18:44:13
Model Engineer 4353 sees the start of another new locomotive design series.
Nick Feast starts the description of Charlie his Southern Railway Q1 in 3 1/2in. gauge. This is designed as a beginners locomotive and the drawings are in metric dimensions rather than the more usual imperial ones.
Feel free to post constructive comments as the series progresses.
Castings are available from Polly engineering.

Edited By David Clark 1 on 15/05/2009 18:45:54

Edited By David Clark 1 on 21/05/2009 21:21:29

Thread: Stockport Vacuum Engine by Anthony Mount
15/05/2009 18:39:27
Model Engineer 4353 will see the start of a model 'Stockport Vacuum engine' designed by Anthony Mount. This is a fairly simple engine with only about 50 components to be made. It can be made on a small lathe such as the C3 Mini-Lathe.
Castings are now available from Polly Engineering.

Edited By David Clark 1 on 21/05/2009 21:20:24

Thread: I/C Topics pages in Model Engineer
15/05/2009 18:34:36
I would like to find an I/C Topics writer for Model Engineer.
Do you have lots of experience building small I/C engines?
If So I would like to hear from you.
Thread: Writing Articles For Model Engineer
15/05/2009 17:55:38
Model Engineer is looking for people to write articles for Model Engineer and Model Engineers' Workshop. We do pay for articles used. Almost any model engineering or tooling subject is welcome but feel free to ask before spending many hours on writing up your latest project.

A set of guidelines  for prospective authors is available from
Request contributor's guidelines.
The guidelines are not written in stone, rather they just offer a bit of help to first time authors.

Edited By David Clark 1 on 15/05/2009 17:56:24

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