Caprotti Valve Gear

[James C MullaneyParticipant @jamescmullaney68276]

[James C MullaneyParticipant @jamescmullaney68276]

Hi All,

 

I am thinking about building a model of 71000 Duke of Gloucester.  Given that 71000 has Caprotti  valve gear I am wondering where to start .

 

Regards and Thanks,

 

 James C.

 

 

[Sean CaveParticipant @seancave62792]

Hi James,

         Information in English on poppet valves is pretty thin on the ground. There is a brief explanation with a quite useful drawing in “Steam Locomotive Design: Data & Formulae”, available from Camden.                                                                                           

         If my memory serves me correctly, LBSC, who was somewhat of an authority on valve gears, gave a description and drawing of both oscillating cam and rotating cam types in The Model Engineer during 1950. If you are stuck, I could probably dig it out for you.

 

 

Regards,

 

Sean Cave.

[James C MullaneyParticipant @jamescmullaney68276]

Hi Sean,

 

I’d appreciate that and thanks, I hope it’s not too much bother.

 

 

 Regards,

 

 

James C.

 

[Sean CaveParticipant @seancave62792]

Hi James,

 

I have found the relevant pages in The Model Engineer, Vol 102, No. 2561, June 22nd, 1950.

 

I have scanned them into my computer, but am sorry to have to admit that I am better with old magazines than I am with computers! I literally don’t know how to post the images onto this website (or any other website for that matter).

 

If you can be patient for a day or two, I will contact my local computer expert who will show me what to do.

 

Sorry about that.

 

Regards,

 

Sean Cave.

 

 

 

 

[Brian OldfordParticipant @brianoldford70365]

Try http://www.dukeofgloucester.co.uk/?page=British%20Caprotti%20Valve%20Gear

 http://www.sarsteam.co.za/downloads_valve.php

 

[Sean CaveParticipant @seancave62792]

Hi James,

 

Check your message inbox.

 

Regards,

 

Sean Cave.

[Author]

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