Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

Marvelous steering. I am surprised that I haven’t seen that in practice on big steamers. Very clever.

Where did you get a ready supply of chain?

The steering, bit of a challenge, is as per full size. If you google Robey Tandem Roller you should get full size machines.

The chain is stainless from Meccano Spares in uk -- https://www.meccanospares.com  Gears are meccano.

Thanks to all for the favorable comments.