How do i make a linkage like this:

Discussion on Stirling or "hot air" engines (all types)
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Wellington
Posts: 143
Joined: Mon Apr 18, 2016 4:02 am

How do i make a linkage like this:

Post by Wellington »

This stirling engine has a link in the middle of the piston rod that allows the rod to connect to the crank shaft without bending. how can I make this kind of connection? Unfortunately the vid does not show the engines link at rest.:

https://www.youtube.com/watch?v=5lth920VUbU

Any suggestions?
Wellington
DLantz
Posts: 14
Joined: Tue Jun 14, 2016 3:30 am

Re: How do i make a linkage like this:

Post by DLantz »

how about a universal joint, like the kind used for a ratcheting socket wrench?
Tom Booth
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Location: Fort Plain New York USA
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Re: How do i make a linkage like this:

Post by Tom Booth »

It looks like it was made out of some parts from some old shock absorbers. Possibly off a motorcycle.
Wellington
Posts: 143
Joined: Mon Apr 18, 2016 4:02 am

Re: How do i make a linkage like this:

Post by Wellington »

good ideas. thanks chaps.
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Owner
Owner
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Re: How do i make a linkage like this:

Post by Administrator »

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NotJustHotAir
Posts: 3
Joined: Fri Jun 24, 2016 11:17 am

Re: How do i make a linkage like this:

Post by NotJustHotAir »

It's an open form of a cross-head bearing using the chamber seal as the guide. Basically moving the wrist pin (gudgeon pin in UK) away from the piston to the bottom of the piston tail rod. This helps reduce side load on the piston as it travels back and forward. Common element on large marine diesels and older steam engines.
Ian S C
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Joined: Thu Dec 02, 2010 5:15 am
Location: New Zealand

Re: How do i make a linkage like this:

Post by Ian S C »

Normally used on GAMMA and BETA motor displacer rods, although I have used a Scotch Yoke instead on a couple of motors.
Ian S C
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