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

It looks like the cylinders and pistons re aluminum . There may be piston rings too but unknown material . I coud see excessive drag if cast iron. I might suggest converting to Teflon rings. My little steamer has them they are square  Teflon angle cut at the gaps  this reduces friction to near 0 . These will work ok on steam if not too hot 400 deg f  compressed air should work very easy . I’ve not seen gear eccentrics but assuming they are adjustable I’d hunk they would be ok . I’m just getting into timing issues .   I’m hoping to be able to make a second test run today . The Allen driver set came with the one driver I needed  cut too.  small to work in the hex screw .  I got a customer satisfaction request today by email . Well being un happy was putting it very gently
I ordered a replacement today . I only have one Mickey Mouse bent Allen wrench that will work for now . So I’ll see what happens in the next day or so . I may be able to salvage a temporary tool from the misc box the too small hex is tapered so I may just cut it off so the larger part fits I hate doing this as I then will have a modified tool that just takes up valuable space.