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Re: Sonic or Ball Shifter?
All,
Just so this thread doesn't turn into a "if your ball shifter shaft fell out, then you did something wrong" back and forth thread, VEX did have an initial manufacturing issue on one lot of VEXpro output shafts where the parts were not properly cleaned prior to the application of the Loctite 680 permanent shaft retaining compound.
We have been 100% inspecting these shafts for retention ever since the customer reports of shafts falling out started. A fully cured part needs approximately 5,000 lbs to pull out.
The bottom line is that, yes, there have been ball shifter output shafts that have come out during operation that was 100% due to a manufacturing error.
Pinning fixes the problem, but you could just as easily use Loctite 680 on a fully cleaned shaft.
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In full disclosure I am the President of VEX Robotics, a division of Innovation First International.
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