Piston and conrod movement in FreeCAD

Piston and conrod movement in FreeCAD

This topic has 3 replies, 3 voices, and was last updated 8 May 2022 at 22:03 by Huub.

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8 May 2022 at 19:28 #21382
lee webster
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@leewebster72680
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8 May 2022 at 19:28 #597477
lee webster
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@leewebster72680
I designed a small engine in FreeCAD and then wanted to see if I had left enough room in the crankcase for the conrod to rotate freely. I drew a sketch of the piston and conrod, created a circle where the middle of the crankshaft would be to represent the crank throw, constrained the center of the big end to that circle, constrained the little end to the piston and constrained the piston to only vertical movement. I didn't know what was going to happen, but I expected to have to move each part to a new position several times to see if the conrod would foul.

I tried to embed the video here, but couldn't get Youtube to allow me to alter the width to suit. Just copy the address below and paste it into Youtube. I hope it works.

https://youtu.be/sbHIeUcM5sY

Edited By lee webster on 08/05/2022 19:43:20

Edited By JasonB on 08/05/2022 20:04:53
8 May 2022 at 20:06 #597483
JasonB
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@jasonb
I never bother bolter the default Youtube width, seems to fit fine.
8 May 2022 at 22:03 #597491
Huub
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@huub
You could run this automatically by using the Freecad assembly Animation feature
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