General Cycling Discussion - Popped a U-lock

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View Full Version : Popped a U-lock


minicooper
06-29-04, 02:23 AM
Friend had given their bike to me before leaving town 'cause she'd managed to loose the key belonging to the lock she'd used to secure the rear tire to the frame.

I tried a number of things to pop the lock... freezing it, hammer/mallot, saws of all kinds... but finally, what did the trick was using my car's scissor jack.

Placing the jack between the parallel bars of the "U" and cranking it up a bit I was gradually able to deform the lock enough so that it resembed a circle. Then, with a little tug, the bar fell right off of the "U" and the bike had been recaptured for use!

I did some minor damage to a spoke, but that was all... no great explosions or anything remotely dangerous....

now that i think of it. . . . kinda scary . . .


OregonBound
06-29-04, 04:00 AM
That is the most common way U locks are defeated. Better locks have specially shaped "hook" feet on the U portion to make it more difficult. You can also lock the bike in such a way to not allow enough room for the attack.

Paul

redfooj
06-29-04, 04:20 AM
thats why sheldon brown recommends mini-u's... not to circumvent sawing of the locks but to reduce room for leverage