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Yeah I agree, taking a lefty Cannondale to do this is gutsy. Almost paid off though! Says on his IG that the left bearing fell out...
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I’ve heard of the pivot bearings on those frames failing at the rocker - on the inside they are unsupported.
Can’t really see how you could achieve that with a PF30 BB as it’s all sandwiched together and supported on both sides.
Possibly crank failure. Ho hum.
It was a stretch in my belief to take my 2.0 Lefty PBR to Bike Park Wales let alone the wildernesss...
What the actual fuck - it’s just two bearings pressed in to cups pressed in to the frame. They can get noisy but short of total bearing failure they don’t stop working.
Full sus bike would be doable for this but not some weenie XC rig that had a fork with a 50hr service interval.