I want your busted or unwanted bike lock to tell for sure what works best.

It's winter and I'm bored because bike mechanics don't have as much to do this time of year so I am going to try and compile some real data on which locks take the longest to defeat.  I have already destroyed some old locks we had here or did cut off for customers but more locks = more data.

If you have a broken lock, chain or cable or one you just don't want get it to me and I will destroy it and post the results here.

All locks are being attacked the following ways:

  1. Wire cutters; believe it or not this will defeat most cables in 30 seconds or so.
  2. Normal bolt cutters.
  3. HUGE bolt cutters with 4' handles.
  4. Battery operated angle grinder with cut off disc.

Defeat times will be posted.

Disclaimer: Cutting in a shop environment with the lock held in a vice does not take into account the difficult position but it is a pretty good demonstration of how strong a lock is.

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Permalink Reply by Ryan L on November 8, 2012 at 9:41am

Hey Dug, I've been pretty busy and haven't been near Wicker in a week or so. Maybe I can stop by this Sunday with the lock. My buddy might also need to drill out his front brake pinch bolt that is seized up and get a replacement. I'll let you know.

Permalink Reply by Gort 12-mile Pinklegneep on November 8, 2012 at 1:48pm

i seem to recall some report comparing locks that nobody could find any lock that existed that couldn't be angle ground in under two minutes 

Permalink Reply by S on November 8, 2012 at 2:11pm

I don't doubt that.  It's hard to beat physics.  Not many materials are hard and durable enough to resist a diamond disc or an abrasive disc and still be able resist things like pry bars and bolt cutters while being light enough to carry around.  

The game is to make the actual theft as long as possible and hope the thief decides to try it in the first place or gets noticed when they're breaking the lock.


Peenworm Grubologist said:

i seem to recall some report comparing locks that nobody could find any lock that existed that couldn't be angle ground in under two minutes 

Permalink Reply by WillG on April 26, 2013 at 8:09am

Dug, did you ever test the New York Fahgettaboudit lock discussed in this thread?

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