Walschaerts 101, the best 45 minutes you'll ever invest.

[hardcoalcase]

I saw this a few weeks ago, the ingenuity behind it all was impressive!!

And it reminded me why I didn't major in engineering!! 

Jim

[wrench567]

 The engineering and design always fascinated me. From the old slide valve to the poppet style. The rotary cam and dual piston were engineering marvels.

     Thank you Ed.

      Pete.

[gmpullman]

I came across this a little while ago. For all the folks that see their tiny stampings and rivets on their model 2-8-2s this will explain alot.

Quite an ingenious machine, you would agree?

Regards, Ed