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

Interesting. All my Ruby chuffer did was shoot the exhaust down into the smoke box and extinguish the burner, making the loco unusable. It ran fine when I put the original pipe back. To be fair, that Ruby had multiple issues, so perhaps a chuffer was never in the cards.

Also, the Dora shoots a lot less mess out of the stack, so that is a plus.