Denny Hot Air Pumping complete

[propclock]

Just finished The 1/4 scale Denny Hot Air pumping engine.
No paint yet. YouTube, my first, is available here.

https://youtu.be/YADgoHTfmuI

Castings from

Wade Eisner <[email protected]>

 

[Mechanicboy]

Also it is a Ericsson hot air engine. Nice work.

 

[propclock]

No it is a Denny Hot air pumping engine.

http://www.google.com/patents/US538068

 

[Mechanicboy]

No it is a Denny Hot air pumping engine.

http://www.google.com/patents/US538068

The two engines are very similar with some minor changes.

http://www.google.no/patents/US226052?dq=john+ericsson+patenter+hot+air+engine&hl=no&sa=X&ved=0ahUKEwik29yVnufMAhWD3SwKHR9GCd4Q6wEINzAD

 

[cam081]

Where did you get the castings from?

 

[propclock]

The castings are from
Wade Eisner <[email protected]>
The Denny obviously is an Ericsson clone, but the symmetrical nature , flywheel in the center of both arms etc.
and some displacer improvements.
Wade Eisner has or had an original Denny and his father made the patterns for the cast iron model.
He still has some castings and as most of us know, castings are not cheap and soon not to be available at all.