crankshaft orientation question

Discussion on Stirling or "hot air" engines (all types)
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lvspiano
Posts: 10
Joined: Tue Jul 26, 2011 2:21 pm

crankshaft orientation question

Post by lvspiano »

Hey all, I'm building my first stirling, finnaly :P

So I've made the linkages from the displacer and piston from paper clip (yes this is a ghetto soup tin engine). My question is, does the rotation of the shaft depend on how the linkages are connected to the shaft? It's hard to phrase my question so I'll upload a picture. The picture is a side view of the crankshaft.
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Ferraccio
Posts: 188
Joined: Thu Jan 27, 2011 10:57 am
Location: Italy

Re: crankshaft orientation question

Post by Ferraccio »

I try to well understand, my english is poor:
Yess yoy can.
The arm bearing the displacer must be paid in advance of 90 degrees (approximately), respect to the movement of the piston engine. of course depending on the direction of rotation.
So if you are arranged with opposite direction of rotation of axis (as you designed) the system of levers must be specular (as you shown).
If the two directions of rotation were inverted (to how indicated), the levers would be facing inwards instead of outwards.
Repeat: (ask support to Jan) when the displacer reaches the top point (dead point) the piston engine reaches it 90 degrees after.
Ian S C
Posts: 2218
Joined: Thu Dec 02, 2010 5:15 am
Location: New Zealand

Re: crankshaft orientation question

Post by Ian S C »

Your lefthand crank will turn anticlockwise, and the right hand one, clockwise. Ian S C
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