Stephenson valve gear for Derby 2P

Stephenson valve gear for Derby 2P

This topic has 4 replies, 3 voices, and was last updated 5 January 2010 at 12:11 by John Rothwell.

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31 December 2009 at 21:15 #46854
John Rothwell
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@johnrothwell
I was wondering if one of our valve gear experts could be persuaded to design Stephenson’s valve gear for Don Young’s Derby 2P design? I have a liking for this design but, for me, the non-prototypical Joy valve gear is off-putting. This is not a criticism of Don’s design which I am sure is a great performer. It just a personal view that valve gear is part of the essence of the prototype.
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31 December 2009 at 21:15 #919
John Rothwell
Participant
@johnrothwell
1 January 2010 at 10:56 #46869
John Baguley
Participant
@johnbaguley78655
Hi John,

I will probably be able to do it for you if nobody else volunteers. I have the original LLAS articles with the drawings etc. Designing valve gears is pretty straightforward nowadays with the help of the work of Don Ashton etc.

John
1 January 2010 at 11:38 #46872
David Clark 13
Participant
@davidclark13
Hi John and John

Don Ashton is willing to do the basics but you will need to flesh it out and clothe it.

If interested, email me direct and I will put you in touch.

regards David
5 January 2010 at 12:11 #47041
John Rothwell
Participant
@johnrothwell
Hi John and David,

I am somewhat embarrassed because I realise belatedly that my post was, in effect, asking for someone to do some work for me! This feeling is compounded by the fact that the 2P is on a “wish List” and not on my workbench. I will send David a private mail, as requested. I have a copy of Don Ashton’s book myself, which adds to my embarrassment because I guess I ought to be able to have a go at designing the gear myself.

Maybe in the back of my mind I was thinking that there might be others interested and that an article in M.E. might be appropriate and the author could accordingly be remunerated.

I am very grateful for the helpful offers but I really don’t want to put anyone to any trouble on my behalf.
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