Search found 6 matches

by Stevedigiboy
Wed Nov 28, 2007 9:43 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: problem with power piston
Replies: 1
Views: 4897

From my experiment with pressure sounds like a leak maybe. I'm using graphite with possible exact gap auto shaped upper teflon ring, brass core guide with disp rod and dual heinrici style pp crank arms, I have isolated the top from a 750f heat test with no change over 1hr on burner air cooled. Steve...
by Stevedigiboy
Wed Nov 28, 2007 7:39 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Stirling engine go-kart?
Replies: 12
Views: 26795

I think the west is pretty behind on this stuff, time to get building your go cart! just try. http://www.youtube.com/watch?v=TrOofEwURTA Steve 441rider on youtube I am already at 400psi on my component stirling and have calculated the upper limit with high grade bolts 1500 on a 38mm o.d. hot cap! 1 ...
by Stevedigiboy
Thu Nov 15, 2007 8:13 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Full steam ahead, errrr air ahead.
Replies: 0
Views: 6001

Full steam ahead, errrr air ahead.

I have begun cutting the components to my stirling prototype and want to pressure test it as I am hoping to use hydrogen or helium in the motor. I am aiming for it to hold 50-75psi and fill it to 15psi. Any thoughts on containment? My cold end will be cold enough for nylon bush on displacer rod (bic...
by Stevedigiboy
Mon Nov 12, 2007 7:17 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Diffuser question
Replies: 1
Views: 4631

I am developing a thin layer of stainless scrubber before the exit to power piston now, I think that flow resistance is the most important factor not to slow the movement speed at higher revs. This is why oil and other things can "choke" the cooling area. This is from what I gleaned from t...
by Stevedigiboy
Mon Nov 12, 2007 7:07 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Advice needed on an idea.
Replies: 4
Views: 7173

Hey, maybe the pics are just difficult, I'm new here too hope it is a welcoming group but it is a holiday weekend too. :o) I'll pull my diagrams though as no comments on posts like this make me weary. S -the scotch yoke is a precision job to work right, many creat huge friction with slight errors in...
by Stevedigiboy
Mon Nov 12, 2007 6:55 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Hello, new member and walking beam Q
Replies: 0
Views: 5898

Hello, new member and walking beam Q

Hello all, I am very glad to have found a Stirling forum to bounce some ideas and concepts of seasoned builders. I have built Gamma and a basic beta moto over the last 2 weeks and have machining, CNC and cad trade experience so have a design on the go to utililize water jet cut cylinder with formed ...