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

Howdy Bob

Very glad to hear that you have got your OKMO R-E up and running now! Cool little engines, are they not!?!?

Yes, the pump does seem weaker than it perhaps should be, but at that scale, pumping at all, let alone running at all, seems pretty amazing to me!

Should you find a good fix for these little pumps, please post your findings and fixings here, so we all might consider making the upgrade.

I suspect the incredibly small scale involved has something to do with these engines tending to run way fast. However, depending on what you are firing with some speed reduction is possible. I just use a bit of water in my denatured alcohol on the tiny little R06, which along with keeping the wick tight and short seems to help some. On the larger gas fired R01 & R02 turning down the gas as far as I can is all I've been able to do, but it does help. Perhaps masking some percentage of the burner face may help reduce the BTUs and thus the speed, but again, I think scale is the main battle being fought here.

BTW ..... fixed your title block by adding (Now Resolved)