- Joined
- Feb 18, 2013
- Messages
- 411
- Reaction score
- 238
I was impressed with Jeroen Jonkman's Stirling '60' and decided to have a go.
This is my second Stirling and I wasn't keen on the two tier arrangement (everyone has their own preference), so I decided to keep it at one level and do it all in brass.
I have transferred the idea into SolidWorks to make things easier.
With hindsight I should have amended a few details to make construction easier.
At first I wasn't keen on the idea of brass on brass for the piston/cylinder combination but hey it does work.
I think the finning should be greater as there is a fair amount of heat getting up there.
The base was the biggest dilemma.
I chose to do a sort of tiered base which if fabricated would have cost around £30 here in the UK. Machining from solid was out of the question as I don#t have CNC (In progress!)
So, I decided to have a go at casting the main form and then cleaning it up with various lathe mill techniques.
I had cast aluminium before but not brass so this was a new experience for me.
First attempt lead to a short pour and too low a temperature.
Second resulted in the casting I used. I know it has defects but hey.. I would never finish the project if I was to attain perfection.
[ame]http://www.youtube.com/watch?v=3xMl4lokQpg&feature=c4-overview&list=UUnHIQQMyv3UwEX2dY4B__EA[/ame]
Overall I am very pleased with this engine and my gratitude goes to Jeroen for providing the plans.
[ame]http://www.youtube.com/watch?v=TjkI6os0mU8&feature=c4-overview&list=UUnHIQQMyv3UwEX2dY4B__EA[/ame]
This is my second Stirling and I wasn't keen on the two tier arrangement (everyone has their own preference), so I decided to keep it at one level and do it all in brass.
I have transferred the idea into SolidWorks to make things easier.
With hindsight I should have amended a few details to make construction easier.
At first I wasn't keen on the idea of brass on brass for the piston/cylinder combination but hey it does work.
I think the finning should be greater as there is a fair amount of heat getting up there.
The base was the biggest dilemma.
I chose to do a sort of tiered base which if fabricated would have cost around £30 here in the UK. Machining from solid was out of the question as I don#t have CNC (In progress!)
So, I decided to have a go at casting the main form and then cleaning it up with various lathe mill techniques.
I had cast aluminium before but not brass so this was a new experience for me.
First attempt lead to a short pour and too low a temperature.
Second resulted in the casting I used. I know it has defects but hey.. I would never finish the project if I was to attain perfection.
[ame]http://www.youtube.com/watch?v=3xMl4lokQpg&feature=c4-overview&list=UUnHIQQMyv3UwEX2dY4B__EA[/ame]
Overall I am very pleased with this engine and my gratitude goes to Jeroen for providing the plans.
[ame]http://www.youtube.com/watch?v=TjkI6os0mU8&feature=c4-overview&list=UUnHIQQMyv3UwEX2dY4B__EA[/ame]