I see there has been some confusion as to the gauge/size. Model is 1/3 scale, to run on 15 inch track (for convenience..actual should be 12"). All other dimensions are 1/3 off of original blueprints form the California RR Museum records.
. I hope to have the boiler on the chassis later this month and plumbing completed in about 2 months. The behemoth should weigh in about 1 ton when complete. Boiler has been pressure tested to 200 psi for 4 hours without any leaks. Pics earlier in post showed a mock up with the jacket.