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Steel coil springs in airplane landing gear?

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LauraJ

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I was reviewing the previous landing gear discussion in the Charger subforum, and one question I asked was never addressed, so I'll ask it here explicitly: Is there a reason not to use steel coil springs in a Charger-type cantilever gear, in place of the rubber donuts?

I'm trying to understand why Ed Marquart chose rubber donuts over a coil spring or belleville washers. I know there are cost differences, but I can easily research those. Are there technical reasons for the choice? Durability differences? Shock dampening differences? Ease of availability?

I'd appreciate your thoughts.
 

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