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Member postings for Clive1958

Here is a list of all the postings Clive1958 has made in our forums. Click on a thread name to jump to the thread.

Thread: 5 inch 0-4-0 Shunter
16/02/2020 19:04:49

Well done Ron, Ive only just seen this thread, its an excellent read with lots of info. Im hoping to build something similar in 7-1/4" and I feel a bit happier as how to go about it now, keep on building and again an excellent read.

Clive

Thread: Hot air and stirling engines
10/04/2010 17:26:09
Hi,
      yes i am still reading this thread, just thought i would mention 8mm x 0.75mm are definitely available as i have one that i acquired in my last job, it was used to tap a hole for water fittings on obara welding guns  which are of japanese origin, hope this helps.
 
Regards
Clive 
07/10/2009 13:00:44
Hi Mark, i'm still here, i've been trying to spend more time in the workshop and will hopefully post some picture of the results, I have been following the thread with interest.
15/07/2009 13:05:21
Ian, probably not much use to you but ive just seen 12mm carbon arc rods on ebay.
14/07/2009 19:46:22
Ian, The piston on my ltd is a plastic diaphragm, have you thought about the carbon rods used for carbon arc welding, or possibly the ferrite rod used in old radio tuners, other than that motor brushes should work fine.
 
Clive
14/07/2009 12:15:50
Ian S C, thanks for your reply, it has given me a few things to think about, I think my first engine will be either a Beta or Gamma and will be built as a test bed for experimenting, I intend to try pressurisation, regeneration and diaphragm pistons, although i dont think i'll use pressurisation and a diaphragm on  the same engine.
 
Clive
13/07/2009 11:33:36
Ian S C, I was thinking of a Gamma engine with the power cylinder below the displacer and partially filling the power cylinder with oil, although if it ran at any great speed, the oil would probably get thrown into the displacer cylinder so maybe not one of my better ideas.
Another (probably stupid) idea I had was to use a s/steel displacer cylinder with a lightweight steel displacer/regenerator moved by a magnet driven by the flywheel, along with a diaphragm power cylinder this would allow a totally sealed engine and no friction due to piston rods, although there would be some drag between the displacer and cylinder, I realise I could get similar conditions with a marble engine but was wondering if this might give greater speed althought  i'm not sure how the displacer would react at higher speeds, any thought's?
12/07/2009 13:05:55
sorry folks posted it twice

Edited By Clive1958 on 12/07/2009 13:07:37

Edited By Clive1958 on 12/07/2009 13:08:55

12/07/2009 13:05:37
Hi folks, its great to see people with an interest in stirling engines, I myself have only built two from kits, a low temperature differential and a thermal lag (both working), I have both James G. Rizzo's books, Roy Darlington and Keith Strongs, stirling and hot air engines and an Andy Ross book called stirling cycle engines which is very good (and only cost 50p at a steam fair), so as you can see ive read a fair bit. Anyway, carry on building and reporting, I am just about to build my own from scratch and hopefully will report the progress as time permits, incidently with regard to minimising dead space, has anyone considered putting the power piston below the displacer piston and filling the power cylinder and dead space with a thin oil which would be virtually non compressible, any comments welcome.
 
Regards
Clive
Thread: MMA on thin metals
30/05/2009 13:45:11
I agree with the above regarding the carbon arc attachment having used one very successfully, it may also be worth trying your existing set-up but with a piece of copper held in place to the rear, this acts as a heatsink and makes it near impossible to blow a hole through as long as the plate is thick enough, ive used the method several times with success.
 
Clive
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