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

Hi Tommy
I believe your pioneer and my Weeden 121 are identical engines, only the name changed. My flywheel is just under 5 1/16 at 5.052” and the width is just under 7/16 at .430”   Unfortunately this flywheel isn’t for sale, just trying to help you identify the one you need. Good luck.

        Thank you Mr. Tom for those dimensions. When Weeden bought out Edgar Side they used up all of the parts on hand which is why they are almost identical, almost. I see your's has the typical Weeden site glass, the Edgar had none. Your's is electric, first over type of this style from Weeden that I've seen with that, and the bearing caps are different. Other than that they made a beautiful engine didn't they. Much cleaner then what Weeden later put out. I have like three Weedens and when they set next to "Old Edgar", my eye's go right to him. Thank's again Mr. Tom.