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

Looks like you´re having a ball experimenting with that new airpump Ben

I also use air a lot for testing/adjustments, as you mention the cold engine is a neat boon during that phase...and much faster than raising steam.

Having a ball is the correct word Jan!, it runs my D20 just beautiful, I think I ran every steam engine in my collection except my D12 tonight(got to unbox and assemble) the rest are all kits or casting kits that need building. I went thru 1/2 a medicine bottle of oil tonight and only stopped because I need some sleep!
  My new pump is the most helpful accessory I have purchased to date, I want to get some premium tubing like Bruce spoke of to make the most of it.
  It will only run the D20 about 475 RPM but still makes great power on the 2.32 PSI.