Look Keo Clunky problem

Recess

Hey folks,

So, I use the Look Keo Ironman pedals on my road bike. Lovely pedals - grey cleats.

But they've developed an odd 'clunk' feeling when I'm really ankling down. It's like I'm pushing too hard, and the spring gives way, clunking the cleat into the back of the pedal. Hard to describe really. But it's similar to my torque wrench, when I get past the set torque, the spring gives out and clunks to let me know - that's what the pedal feels like.

My question therefore is... what's up with the pedals? The cleats seem fine - there's a little wear on the grippy bits on the cleat, but the main structure of the cleat is still 100% in tact. I've tightened up the screw as far as possible, and it still happens. Is the pedal knackered? Is a simple service all it'll need?

I hope someone can help. Thanks.
John

pliptrot

Check that the pedal is tight on the crank - it may well be movement between the two. I've had similar with pedals where an allen key is used to tighten them on the crank - it's hard to get them tight.

mamba80

it could be that the body of the pedal where the grey cleat presses against the pedal is worn, this has happened to 2 sets of carbon keos and is the reason LOOK went to a bonded metal plate on the pedal face of the MAX 2s - this could cause the "clunk click" sound you hear.
Also, worth checking pedal bearing wear - on the normal keos you can tighten the plastic collar with a 19mm socket - pedals removed - one pedal has a left hand thread, so be careful.

Pedals normally self tighten so unless the pedal is hanging of the crank??? dont ring them up or you ll never get them off again! you need a 8mm allen key.

Recess

Great, thanks for the tips about the bearings and the body wear. I'd be surprised if I haven't noticed a loose pedal, but I'll investigate anything at this stage!

John