Ryder Ericsson Hot Air Pumping Engine

[Harry]

This is a pumping engine that runs on hot air from a gas or coal flame on one side and cooling well water on the other side. The two cylinders are timed so as to control the air flow between them, alternately reversing temperature and therefore pressure and then suction on the pistons which are exposed to atmospheric pressure on the top side.



Photos from the 2003 Rollag, Minnesota show, engine owned by Jerry Swedberg.

[James K. Gehringer]

Hi harry .

Thats a neat engine ,never seen one like it.

James K. Gehringer
Blackberrymodels.

[David Tsr]

I made a model of one of these H A engines last winter and showed it at several shows last summer, it was quite a crowed pleaser. I made a small propane burner and a water tank for it. It will run about 20 hours on one tank of fuel. It runs good and pumps lots of water. It is about 27 inches high and has a 2 inch bore.
Dave

[Steve Shearman]

I,am lucky enought to have 2 6in Rider Ericsson hot air engines one I have restored and operating this one is serial No12246 and the other one I have to restore yet and get or make parts for is seial No18883