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Re: Sonic Shifter - recent feedback?
BoilerMentor,
Were you guys using the old ball shifter shaft without the pin in it or the new shaft?
I ask because the press fit in the original shaft would allow the deflection you speak of but the new shaft would most definitely not.
Also, a cantilevered shaft with the proper bearing spacing behind it is a perfectly legitimate design strategy especially with the cantilevered gear so close to the external bearing face.
Additionally, this is the first example of a failure like this that we have seen with the 3 CIM shifter so I really would like to get more information from you.
PM me if you would like me to email you.
Again, this failure mode is not normal in the typical 3 CIM ball shifter use case (even with your ratios you are within our normal use case).
Thanks,
Paul
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In full disclosure I am the President of VEX Robotics, a division of Innovation First International.
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