I'm trying to find information on springback when making large radius bends in thinwall tubing. Everything I have been able to find relates to the angular springback when bending around a relatively small fixed radius form, where the actual radius isn't critical. However, what I need to do is to bend the tube to a specified radius and angle (this is for the propeller guard ring on a paramotor).
In my application, I need to bend 3/4" dia x .049 wall tubing into a
28" radius ring. Not knowing the springback, I made a test bends around wooden forms, and found that the springback (angular or radius) wasn't constant or proportional based on either the formed or final radius. I can interpolate and try again (once I get some more tubing), but there has to be a better way.-Dana
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