Radius arms are a never-ending challenge in the world of quarter-elliptical Sprite Mark I and II’s. The bushings fail and fail regularly, and if you think that rigid steel heim joint radius arms are a better idea, you’ll find that they diminish ride quality and shake your teeth more than you’d probably like. Heim joints are really only appropriate for track cars, or people under 30.
As a result, we are constantly working on the rubber bushings on these things to try and attain at least the slightest bit of comfort for the driver. And we change these bushings often, because the rubbers tear all the time, and if you lower the car with them too tight after you’ve installed new ones, they’ll tear all over again.
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