Then use a cable lock or a second U-lock for extra security on the front wheel. In most situations, you'll be able to attach a U-lock to your chosen anchor, the rear wheel, and the frame. The rear wheel and the frame are the most expensive pieces so start there. It sounds obvious, but double check you've not missed the anchor (Image credit: Josh Ross)Īnything on your bike is up for grabs in the right situation and you can't lock everything. Many cheaper locks use cables, but the best budget bike locks avoid using a cable, as it's much easier to cut through than other types of lock. Again, a good quality lock will be heavy and, unlike D-locks, they're vulnerable to attack at the joints.Ĭable locks are easy to carry. We've got a comparison of the pros and cons of a chain lock vs U lock if you want to read more.įolding locks with jointed segments to the shackle, like the Abus Bordo Lite are also easier to carry than D-locks. A good chain lock will still be heavy, but it's more packable and easier to use than a D-lock. The best chain locks, like the Hiplok Gold approach D-locks in security, although there are more points of attack, so less robust chain locks tend to be more vulnerable than D-locks. The Hiplok D1000 is a D-lock we rated highly. The shackle is hard to attack and the lock in the bar can be made robust, but D-locks are heavy and bulky to carry. The most common high security bike lock is the D-lock (aka U-lock), where a solid U-shaped shackle is attached to a locking bar. write them down and try them with the likely numbers from the others.Choose the right lock - in the right size - for the job (Image credit: Josh Ross) sometimes there are two numbers on one tumbler that seem likely. There's a lot of money in making sure you can't figure our how to open a lock without knowing the combo. ![]() None of these are sure fire on their own. a tooth is in the way of the disc sliding locked again. It's harder to leave a number than it was to get to it. the last click (if you didn't guess) was likely the disc reaching it's correct place and a tooth popping into the gap. in more expensive locks (like mine) you'll feel (and excuse the hokey onomotopeia) .CLICK. Any consistent response from the lock that is larger when one number is reached than any other. this means that tension was just taken off of one of the discs and now the shackle's teeth are pressing harder on another disc. A previously loose tumbler just got hard to move. When it's all of a sudden easy to move, that's an indicator you have one of the numbers The tumblers will be really hard to turn under tension. companies tend to put notches in the discs to give would-be thieves a hard time so you need to look for a union of events. Now, there's a couple of things to look for. tension makes the disc's shapes easier to determine. Start with the tumblers that are hardest to rotate first. anyone good with arduino want to make a robot? I now use a keyed on-guard U-lock. the only way to open one seems to be through exhaustion. their tolerances are tight making the lock seize under tension. Kryptonite's higher-end locks still prove to be beyond my ability to crack. After moving to the Roger's park 'hood of Chicago, it has become rapidly apparent that cable locks are not only easy to crack but easy to cut. Edit (2014): I have since retired this lock. If that's your reason for being here, kindly piss off. you can't put enough tension in the system to feel the shape of the disc using your muscles while rotating the tumblers. Footnotes: Don't try to use this to steal a bike. the ones that have half inch braided cables and much tighter tolerances. (i'll explain why later) This one works on the nicer kind. ![]() I know there's a lot of stuff on line about how to unlock a cable lock but these methods only work for the drug-store variety of locks that have low tolerances and a lot of wiggle room. ![]() it's not the exhaustion method (trying every possibility) but it takes a little brain power and reasoning. ![]() so I cam up with this method to find the lost combination and save the world (my world) This is the semi-hard way. My brother's friend found my 6ft On Guard cable lock and promptly reset the combination to something he was too lazy to remember.
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