Finally gone clipless

[fossyant]

SPD's don't normally release unexpecedly, but they can........happened to me on new XT pedals on a fixed....... one legged bobbing at 25 mph.........

Sometimes the cleat can wear badly - that's what happened to me, earlier and the subsequent cleats have been fine.... only had the 'bad' cleat a few months..... old cleats lasted years, fitted new, one went bad, replaced and have been fine since......

Same with any system - eliminate what is causing the issue.

I had a stack of issues with cleats at the Velodrome in November..... no problem on my pedals at home (top of the range compared to the basic pedals at the drome), go to the drome, and the Looks there caused me to unclip - most likely the pedals, but I replaced my cleats after.....no problem at the January session.

Tricky sometimes....... the wear on cleats can be un-reliable sometimes

 

[GrasB]

Oh for the record, I've been told from a rather knowledgeable source, ie someone from within Shimano, that SPD cleats are designed to break away with very high forces unlike SPD-SL. It's more than possible that a powerful rider or someone who's rolling on their feet & pulling 'out' of the pedal can apply enough force to exceed the clamping threshold & thus yank the cleat out of the pedal.

 

[2Loose]

Sorry, got to admit to having my 520's break away on the same hill at least once a week. They are @ full tension now since tightening them to try and stop this. Stand up, pull really hard and go for it...something has got to give and it is better my clip than the leather parting from the sole