Bicycle Mechanics - what do you think about this lock?
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05-25-11, 10:03 PM
The keys aren't those cylindrical types, so people can't really hack into it without specific tools.
05-25-11, 10:27 PM
its another D lock, China based company no doubt.
certainly sells for cheap.
tell me something about the heat treatment processes the parts received
and that will go a long way to describing the strength.
buy several test what tools and techniques are required to defeat them.
Bike Radar , part of the group that runs the cycling news site,
destruction tests locks and reports on what they had to do..
places odds on whether a culprit would carry those tools.
05-25-11, 10:29 PM
I was reading a thread about this lock in another section. Apparently someone figured out how to open it with a bic pen. I think it was the same lock anyway.
It's obviously cheap and probably not too strong, but if it intimidates a thief with bolt cutters into looking for another bike I guess it's done its job.
05-25-11, 10:49 PM
this one (http://www.bikeforums.net/showthread.php/733456-opening-U-locks-with-a-bic-pen?highlight=)? yea I made that thread, as you can see. Like I said, the keys for this one is different. they're not cylindrical. The old U-locks could be opened with bic pen cutouts because the cylindrical shape of the pen match almost exactly with the keys. This u-lock uses keys that have teeth in them.
and just for the record, I got to keep that outdated u-lock after getting my refund, and based on the picture, the make of the u-lock from this thread and the other one appear to be the same.
In any case, I would assume that it's much better than an ordinary bike lock that you can buy from walmart, right? I mean you need a small disk saw to hack through the metal... you can't just open it with a bolt cutter can you?
05-25-11, 11:12 PM
Yes, you can. The thinner it is, the easier. That's pretty thin, and there's different types of heat-treating.
The two most common ways through a U lock are bolt cutters (thicker is better here, along with a quality heat-treatment) and bottle jack (design of shackle is what helps.) I'd venture a guess that the shackle is a simple and easily defeated design, and it'd be pretty easy to snip through that with bolt cutters.
It weighs 1/4th what my u-lock does, that says something at least.
05-26-11, 01:06 AM
well I think I'll take my chances with this one anyway. I mean the price curve is pretty wacky. You have to go up to $60 or so in order to have a lock that weighs ~4 lbs. Everything in the $10-30 range weighs no more than 2.4 lbs. I don't know about heat treatment though
05-26-11, 01:12 AM
if you got the bike at wall mart what's to lose..?
it looks like a lock and the bike is marginal so people likely won't bother,
05-26-11, 01:45 AM
what makes you assume I got my bike from walmart?
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