4 cylinder steam engine

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un1corn
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4 cylinder steam engine

Post by un1corn »

Horizontal 4 cylinder rotary valve steam engine.
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4CVR 3.JPG
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4CVR 2.JPG
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4CVR 1.JPG
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bitacovir
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Re: 4 cylinder steam engine

Post by bitacovir »

Spectacular!
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triplus
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Re: 4 cylinder steam engine

Post by triplus »

Nicely done!
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dubstar-04
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Re: 4 cylinder steam engine

Post by dubstar-04 »

That looks fantastic! Thanks for sharing!
user1234
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Re: 4 cylinder steam engine

Post by user1234 »

Looks very good! But are the teeth of the bevel gear functionally?

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ickby
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Re: 4 cylinder steam engine

Post by ickby »

Nice one! What is the reason to have the 180° differential of the pistons, and not 90°? As it is now you have a dead point where no force can be created (the situation shown in the pictures), but with each piston rotated by 90° you could have continuous force, which allows a smaller flying wheel.
herbk
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Re: 4 cylinder steam engine

Post by herbk »

ickby wrote: Mon Aug 19, 2019 6:55 am As it is now you have a dead point where no force can be created (the situation shown in the pictures), but with each piston rotated by 90° you could have continuous force, which allows a smaller flying wheel.
Hi ickby,
if the force of the pistons is at 180° (like it is) the force is straight to the direction of the piston movement.
If you work with 90° you get aditional bending forces and oscillations, which needs a much more strong case. - May be the vibrations gets so strong that it's not possible to deal with...

Thats also the reason why a reguler 4 cylinder engine never has the working order 1 2 3 4.
Last edited by herbk on Thu Sep 05, 2019 7:28 am, edited 1 time in total.
Gruß Herbert
un1corn
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Re: 4 cylinder steam engine

Post by un1corn »

As well as agreeing with Herbk comments, this is how the model is presented in the plans.
realgrm
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Re: 4 cylinder steam engine

Post by realgrm »

Hi, nice project.
Since I'm new here, I'm wondering if there is a way to download the 3d model to open in FreeCAD. I can only see the images.
I'm taking motor combustion classes and play with this model would be nice!
triplus
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Re: 4 cylinder steam engine

Post by triplus »

realgrm wrote: Thu Sep 05, 2019 12:20 am Hi, nice project.
Since I'm new here, I'm wondering if there is a way to download the 3d model to open in FreeCAD. I can only see the images.
I'm taking motor combustion classes and play with this model would be nice!
Indeed, it looks like @un1corn didn't share the FCStd file. Best to wait for his response, regarding that.
Last edited by Kunda1 on Thu Sep 05, 2019 9:29 pm, edited 1 time in total.
Reason: edited to remove superfluous discussion
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