If you're using , say, 1040 cr [30,000] an eight foot rod with supports two inches from each end, and distributed load of 50lbs [one bar] across the center eight inches will bend about 0.38 inches down..
and yes, two supports at each end will help, primarily in reducing a 'tilt' effect on the support, which will reduce rod deflection to some extent..
ideally, a weight of 100 lbs on two bars, even 4 feet long, 'should' be done with a supported rod..
hard to give a better answer 'off the top' without
not sure if this the answer you were looking for, but?? |