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but a lot of our decision to work with this bushing/insert design came guided from Energy suspension engineers. They use this design in a lot (I would say 1,000's) of their bushings and we really leaned on them for their input on the press fit tolerances along with the grease retention design. We even went head to head with them about using aluminum inserts rather than steel to be lighter, while they said they haven't tested aluminum the steel parts go over one million cycles without any measureable wear so we went with steel.
While Dustin worked directly with them for this part of the process it is my understanding that the square cut profile is more durable in the long haul, and it also lends to a little deflection rather than strictly a free moving/sliding motion.
I'm really not sure if a pebbled design on the shaft would be the long term solution or I think they or whiteline would already be using it in the market. Whiteline uses a mesh style embeded design to their bushings that they argue is better, but I really haven't seen problems with this design in the past, even the factory arms use a similar "grease groove".Regardless it is not our intent to have them squeak, I know most of the grease does seem to escape when pressing them out here, perhaps we will just have to be more thorough during the assembly "lube" and test process before packaging. Look forward to hearing the result, thanks again for the input.
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