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chucketn
10-25-2014, 12:43 PM
I am researching making patterns to cast al flywheels. Ifound a drawing from Elmer Verberg’s info at the Jon-Tom website. How do Imachine the tapered spokes, shown in thedrawing below, on a rotary table? I can understand the setup for drilling thecorner holes for the cutouts, but how do I offset for the taper of the spokes?

Chuck
Tried to add attachment but it didn't work.

Fasttrack
10-25-2014, 12:51 PM
You offset the center of rotation. Have a look here for a more detailed description:

http://rick.sparber.org/FWp.pdf

CCWKen
10-25-2014, 12:57 PM
Is there supposed to be a picture? I don't see anything.

chucketn
10-25-2014, 02:48 PM
You offset the center of rotation. Have a look here for a more detailed description:

http://rick.sparber.org/FWp.pdf

Thanks, that is what I'm looking for. I'll go print that out and study it! Thanks.

Yes, there was supposed to be a picture. I'll go back and correct that.

Chuck

Richard P Wilson
10-26-2014, 04:30 AM
I just marked out the spokes, drilled the corner holes and cut away the waste with a hand held jig saw. Followed up with a rounding cutter in the router, and a bit of hand work with a Dremel. These were curved spokes on a 14" 35lb flywheel. No complicated maths at all.