Member postings for G.E.M.

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

01/08/2012 15:40:04

No need to reply just realised the barrel pin is for a pony type bogie where their is a leverage back to the pivot pin, on a four wheeled bogie the loads are equal either side of the pin.

Regards Gordon May

Thread: Loco Design Co

31/07/2012 18:14:13

Build it with piston valves as Nigel Gresley did if you really want it to perform.

Regards Gordon may

Thread: Wheel crank pin

31/07/2012 09:18:19

Basically a flat washer of dia 1/8" larger than the crank pin dia, c.s.k. to take a 2ba c.s.k. screw. The crank pin of course tapped to suit, Locktite in. Hope this helps.

Regards Gordon May p.s. washer thickness 0.070"

Thread: 4 WHL BOGIE CENTRE PIN

29/07/2012 16:24:27

Designed the above for 5" gauge but have just seen a drawing where the pin is radiused on the diameter where it fits into the slide block, i do not see how this works as the slide block is up against one of the main frame stretchers or have I just got a blind spot ? Hope someone can help.

Regards Gordon May

Thread: VACUUM GROOVES

11/09/2009 17:58:15

Thanks for the info, Ian all is now clear

Regards Gordon.

11/09/2009 11:06:05

HAS ANYBODY ANY INFORMATION ON VACUUM GROOVES IN SMALL VALVE PISTONS. RATHER THAN FIT O RINGS OR PACKING YARN. ie HOW THEY WORK AND WHAT SPEC, IS REQD.

REGARDS GORDON MAY

Thread: Separating oil from steam and condensate

28/07/2009 20:31:57

I am currently designing a 5" V2 type loco where I hope to return the exhaust steam back into the tender via a heat exchanger, but before I can accomplish this I need to extract the hot lubricating oil from the exhaust steam. Can anyone suggest a fast way of accomplishing this.

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