[modeleng] Re: Curved spokes

Actually my US Navy "foundry manual for repair ships" only says that curved 
spokes are to prevent stress in the spokes and rim when cooling.  An 
alternative to curved spokes is to make the pattern so the spokes intersect 
the hub at one edge, say the left side.  When the casting cools, the hub is 
able to rotate slightly to relieve the stress.  Makes for a mud fence ugly 
handwheel, but would save time over making curved spoke patterns.  This was 
written for handwheels and small pulley castings and no mention was made of 
flywheels, but then probably weren't many if any flywheels on warships that 
were likely to need being recast.  The manual was written with small 
castings, (centrifugal pumps, valves, handwheels etc) in mind.

Jesse the Tennessee Redneck 

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