5:38 am
Club President
April 2, 2003
7:45 pm
Club President
April 2, 2003
12:56 am
It's actually a little better than I thought. My limit will be the caster wheels I get. I think I'm gonna get 290 lb/caster ones that are step. You get a friction insert to the tube and it seats the flange very well. No welding needed.
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Stem Caster: Friction-Grip Stem Caster W/Brake, 5" X 1-1/4" Rubber, 7/16" X 1-3/8" Stem, 290#Cap
http://www.mcmaster.com/#stand.....rs/=mjwpve
Simulating 1200 lbs on the top shelf (for the heck of it) and as point loads. Single axle is roughly 500 lbs.
Deflection is just under 3/16" and roughly 16 ksi. Consider yield at 36 ksi for mild steel.
I think I'd like to make an adjustable shelf in the middle. Accomplished by sleeving solid round rod through the legs just like how a book shelf works. Something like that.
Yeah, I'll have an adjustable member for securing the pinion.
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