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

Connie, my year-old Roundhouse Millie, ran for an uninterrupted 67 minutes this a.m. The previous record was 58 min. 17 scale mph or less. 60*F with light mist. No wind. No gas or water refills. 60 ml water left in the boiler. The photo shows her cooling down after the record run. The pride of the Midland & Main fleet. 

Amazing amount of time! Did you figure out how far it traveled?

Didn't think of that! Back of the envelope calculation, assuming 17 mph avg speed... ~19 scale miles or ~1 actual mile.

Didn't think of that! Back of the envelope calculation, assuming 17 mph avg speed... ~19 scale miles or ~1 actual mile.

That would have been good exercise following it around the track.   

It has certainly traveled farther than I have (or plan to) today. 

That would have been good exercise following it around the track.   

Well done INDEED ... that must be just the right speed!

Well done. It's good control of the gas that does it and the right valve settings. Some people have the gas up too high and it wastes steam through the safety valve.  .....Allan

impressively long run for one boiler fill , I don't believe I've heard of any longer runs than that.

That's an impressive running time on one fill of gas - butane?

My manual controlled Millie ran for 63 mins last year on one fill of mixed butane/propane gas pulling one small coach on an end to end layout indoors, requiring running round at each end. Later in the year it put in 2 runs of over 50 mins on my small portable layout, which uses Faller eTrain track (15" radius), at a model railway show.

My radio controlled Millie is still running in, and like wise my 45mm gauge Millie which has just been fitted with new slide valves & the timing adjusted, so they do not run for as long (yet).

Chris Cairns