Search found 36 matches
- Mon Mar 05, 2018 3:18 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Noob question - would these parts work?
- Replies: 23
- Views: 16177
Re: Noob question - would these parts work?
I'm not too sure about the clearance in a motor that big, a gap of 2.5 mm/3 mm sounds about right by me, I think maybe 4 mm/ 5 mm for end clearance. Really if you are going to build to this size you should have a machine shop with at least a lathe, and quite a big one at that. Ian S C Unfortunately...
- Sun Mar 04, 2018 4:57 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Noob question - would these parts work?
- Replies: 23
- Views: 16177
Re: Noob question - would these parts work?
Thanks for the tip Ian, glad to hear the crown could be shortened. Am i correct assuming the hot cap itself should be shortened accordingly, containing as low dead volume as possible? This leads me to another question - is there some rule of thumb for crown side clearance to hot cap (e.g. in order t...
- Sat Mar 03, 2018 2:11 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Noob question - would these parts work?
- Replies: 23
- Views: 16177
Re: some alpha engines have displacers
Blaf, some alphas have displacers and since you have not started building yet, I would encourage you to consider the possibility in your design. Usually, this has the result of moving the rings of the the hot piston a good distance from the heat. Directly heating the cylinder and piston is rather p...
- Sat Mar 03, 2018 1:55 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Noob question - would these parts work?
- Replies: 23
- Views: 16177
Re: Noob question - would these parts work?
A power cylinder could be made from an old wet sleeve from a truck or tractor engine, this might give you 120/150 mm bore (there's one under my bench). It's possible your scheme could work, but how round is the stainless AC tube. Adapt your design from a working motor. Ian S C I was also wondering ...
- Fri Mar 02, 2018 11:26 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Noob question - would these parts work?
- Replies: 23
- Views: 16177
Re: Noob question - would these parts work?
Hi, thank you for the reply. You understood correctly, i planned using stainless tube for both hot cap and power cylinder. I choosed such tube because its quite cheap. What would you recommend using for power cylinder instead? Or maybe could you elaborate more about why is stainless steel bad choice...
- Fri Mar 02, 2018 3:19 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Noob question - would these parts work?
- Replies: 23
- Views: 16177
Noob question - would these parts work?
Hi guys and gals, I'm thinking about building a larger alpha stirling for exhibition at one post-apocalyptic (of that stylized kind - Mad Max/Fallout style) event. Since i'm pretty tight on the budget and also have no access to any machining tools, i was wondering if building a stirling from ready-t...