Search found 3 matches

by Theoldcodger
Tue Oct 25, 2011 7:12 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: The rider water pump
Replies: 9
Views: 8631

Re: The rider water pump

To Martinnman You should read my earlier comments! The pistons are dry and free in the extreme. The engine is an alpha type with 2 equal pistons and 2 unequal displacers as the many video and stills available on the net will show they are of full working engines not models. I have seen a working mod...
by Theoldcodger
Tue Oct 11, 2011 8:35 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: The rider water pump
Replies: 9
Views: 8631

Re: The rider water pump

Brian replies to Ian sc Thanks for the response. I will post a picture soon, but I will give descriptions now. The engineering is of high quality. The cylinders are cast iron lapped to mirror finish and parallel to a few microns. The pistons are made of amorphous graphite and are almost friction fre...
by Theoldcodger
Sun Oct 09, 2011 8:47 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: The rider water pump
Replies: 9
Views: 8631

The rider water pump

I am a newcomer to this site, a longtime modeler and I have made several sucessful stirling engines, but my latest is not working! Something is very wrong. It is a version of the Hayward rider water pump and I had to guestimate the essential parameters like the bore/stroke ratio, the swept volumes o...