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

Quote from: St Paul Steam on May 19, 2021, 10:07:55 pm

So that answered my question, he did this intentionally.

Yes, the two times I have seen it they replaced a clear glass with a Redline tube, so they are teaching and improving the engine at the same time. They show us how to cut the glass and seal the tube and the proper way to warm the glass being the boiler is already warm and full of steam.