Originally Posted by Markok765
I was cutting a lock that was one on bike that I found [not attached to anything] I found it with the deralier broken. The lock was on the top tube. It was a cable lock similar to the one I have, and when I tried to cut it off with a hacksaw, it was hard. I put a piece of wood under it to steady it and to prevent the hacksaw blade from hitting the frame, and the lock kept going everywhere.
Bike thieves don't operate with a hack saw and a block of wood, they come armed with stuff like angle grinders and (more commonoly) bolt croppers.
Even the sturdiest U lock with the highest security rating (the rating system differs from brand to brand) is rated by how many minutes
they can withstand an attack from a bike thief, and even these modest claims are shown to be a little ambitious by numerous tests that have professionally tooled thieves through the hardest, most expensive locks in under a minute.
You will never protect your bike 100%, you can certainly deter opportunist thieves, but there is nothing you can do to protect against a determined professional thief.
Even I can go through a 10mm cable lock (with the plastic cover) with a Dremel hand held cordless tool in 2 or 3 minutes. Much faster if I bothered to charge up my cordless angle grinder. Your story above tells us nothing other than that cable on the found bike could protect against someone with a hacksaw and not a great deal of history of stealing bikes, I would want more from a lock.
Like I say one of the few things you can do is make it hard for the thief to get a good angle to work on the lock with something like a car jack, this is where those little U locks come in handy.
I normally just leave human **** on the bars and saddle, had the same bike for 20 years ;P
Last edited by tynan; 05-19-08 at 10:48 PM.