Supporting > Casting

Flywheel patterns

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PatJ:
I ran across some guys who are using 3D models that can be downloaded from Grabcad to make CNC patterns for steam engines.

I downloaded the files just to see if I could get at the models, and sure enough, you can download the models and open each one, or the entire assembly.

The flywheel just did not look right to me, so I took ten minutes to open the sketch, tweek it, and modify the part.

Grabcad is the brown flywheel, my tweek is in gray.

Which one do you prefer?

chucketn:
Looks good, Pat. Can you scale the size up and down? I need an Ericsson flywheel at 3 1/2" in dia.

Chuck

b.lindsey:
Chuck, are you making a 1/8 scale version and if so will the rest of it be cast or bar stick?

Bill

chucketn:
Bill, I'm just completing my foundry and will try to cast the major parts of the Rider-Ericsson. And, yes, it will be 1/8 scale.
At the moment, the cold weather has me shut down, so I'm trying to make patterns. Also working on the '47 PS Vertical Woodson.
Chuck

PatJ:
Yes, I can scale it to any size, but be careful as those spokes will be a little thin at that scale, you may want them slightly thicker.

I assume you want a factor of about 1.02 for shrinkage of aluminum?

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