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Path: utzoo!linus!decvax!bbncca!slipson
From: slipson@bbncca.ARPA (Samuel R. Lipson)
Newsgroups: net.bicycle
Subject: Theft Resistance of U-shaped bicycle locks (QUERY)
Message-ID: <1468@bbncca.ARPA>
Date: Sun, 23-Jun-85 20:28:51 EDT
Article-I.D.: bbncca.1468
Posted: Sun Jun 23 20:28:51 1985
Date-Received: Mon, 24-Jun-85 08:20:20 EDT
Organization: Bolt, Beranek and Newman, Cambridge, Ma.
Lines: 32


	I'd  like to hear from people who have had bicycles stolen due
to the failure of their  "high-security"  (Citadel/  Kryptonite  type)
lock, and not the "immovable object" your bike was locked to.

	I'm not sure whether the Kryptonite/Citadel story is hype, and
I'd like to find out.  It certainly appears it would be harder to  use
bolt-cutters  on one of these than a chain or cable, but I have a hard
time believing they're only succeptable to "200 lbs of cutting/welding
equipment", as some of the advertising suggests.

	I've  been  told  (by my local bicycle "entrepreneurs") that a
Kryptonite lock can be shattered by  applying  dry  ice  [did  I  just
encourage  some would be bicycle thief?].  Does this only apply to the
dark colored ones on sunny days (i.e. temperature difference),  or  is
it a general characteristic of "hardened steel"?

	My  local  bike  shops swear by the Kryptonite locks, but I've
known people who think the Citadel is the only one worth  using.   Are
these  profit/religion  motivated people, or is there some fact behind
their opinions?

	General comments on  bicycle  (and  "fixed"  accessory)  theft
prevention  are  welcomed.   (Using  typical  outdoor bicycle racks or
typical city immovable object -- indoor/controlled  environment  makes
the problem less difficult.)

	I will post a summary.

	--Sam Lipson

	{decvax, ihnp4}!bbnccv!slipson