Search found 5 matches

by jhead
Fri May 18, 2007 6:47 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: increasing displacer 'dwell' time
Replies: 14
Views: 21342

the track idea sounds great but how do you make it work without friction... router in a piece of wood? Would a roller (bearing) at the top and bottom of the cam work? I was planning on a slower but more powerful engine geared to a higher speed fan. I have also toyed with the idea of a water pump tha...
by jhead
Wed May 16, 2007 9:03 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: increasing displacer 'dwell' time
Replies: 14
Views: 21342

that is exactly what I am talking about. I have toyed with the idea of a roller on the bottom with a counterweight to keep the displacer in contact with the cam OR a sort of hooK going around the cam and rolling on top of it and let the weight of the displacer work the downstroke and the cam would p...
by jhead
Thu May 10, 2007 12:51 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: increasing displacer 'dwell' time
Replies: 14
Views: 21342

I am currently building an engine with a cam on the crankshaft that works the displacer. It is similar to the way a cam works a valve in a internal combustion engine. The way I plan to raise the displacer to stay in contact with the cam is with a counterweight. The cam I have designed resembles a tr...
by jhead
Wed Feb 07, 2007 1:00 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: piston weight
Replies: 2
Views: 6783

piston weight

I am building an engine similar to this one http://www.quirkyengines.com/html/build_it.html and I found a piston and cylinder that seal perfectly out of some old air tool. The piston is 2cm across and about 2cm high and solid steel (pretty heavy). I can drill out the center and cut the weight by 1/2...
by jhead
Fri Feb 02, 2007 10:37 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: heater fan
Replies: 1
Views: 5354

heater fan

I am new to the forum and stirling engines in general (just saw the first one on wednesday). I have seen the heater or wood stove fans that sit on the hot surface and run advertised for around $300. I would like to build something similar to this. My surface temp is around 250 degrees F (I guess sin...