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This is a tweak to the previous design, based on some road testing.
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I have a bag of spare cushions from all the other earbuds, so this isn’t a showstopper.
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Evidently he figured there was something really delicious hidden in there somewhere!
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The general idea here is to bolt the seat to an aluminum circumferential clamp just forward of the plate and tubes that normally secure the seat to the frame.
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Marathons have plenty of rubber and include a Kevlar puncture-resistant layer. In this case, that was just barely enough!
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As for the coaxial power tip: a dab of solvent glue, an overnight clamping session, and I think it’ll work fine forever more.
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Key point: you absolutely do not want to saw into a lithium-ion cell, not even a little bit.
