Locks are used to secure bikes. Common varieties are cable/chain locks and U-locks (D-locks).

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5
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1answer
145 views

How popular is the “Sold Secure” certification among reasonable-quality lock makers?

I'm a recent convert to cycling, having moved to Amsterdam, and I intend to buy a U-lock for a bike I'm getting. Now, people have recommended that I buy U-locks with a "sold secure" label - but in a ...
2
votes
2answers
44 views

What is the best way to secure a bike on a bus bike rack?

This question involved a bicycle stolen off the front of a San Francisco muni bus. Up to now, I never thought much about how vulnerable my steed is on a bus. What is the best way to secure a bicycle ...
5
votes
2answers
141 views

U-lock mount bracket on carbon frame?

I took my bike to the bike shop to get remove the quick release wheel things, so that I can use only one U-lock, anyways they changed it for me but the bike mechanic really got mad at me and said 'you ...
13
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3answers
1k views

How can I paint a kryptonite key?

I now have 4 kryptonite keys on my key ring that I carry around for my family. These are the ones with a black plastic bulb on the key's bow. In order to make my life easier, I would like to paint ...
4
votes
2answers
114 views

How do I remove this back wheel axle nut? 90s Peugeot mountain bike

It's a 16mm nut that won't turn, and I don't want to bend my cone wrench. The other side came off easily but was a normal nut. This side seems to have some sort of lock/ hole for a pin but I'm not ...
2
votes
2answers
70 views

Folding ABUS Lock will not UNLOCK [duplicate]

My bike is locked to an indoor bike rack with a folding ABUS keyed bike lock. Today I couldn't turn the key to release the lock after work. No problem locking it in the morning. Tried wiggling, ...
6
votes
2answers
395 views

New D-lock failed locked up

This doesn't appear to be a dupe of any of the stuck lock issues -- I've only been using the lock for 3 days and the key turns fine. It's an Abus Ultra 410 which locks at both ends and only one end ...
2
votes
2answers
78 views

OnGuard U-Lock key mechanism partially activated

I have a mini U-lock from OnGuard. The lock is not attached to the bike, so that's not a factor is this question. I can see the locking mechanism jutting out partially into the key hole, which is ...
0
votes
2answers
219 views

Where do you leave your bike on cafe stops and water breaks?

Where should I leave my bike on longer rides when stopping at a cafe or going into a store to get water? Do you carry a lock in your jersey? Leave it outside? What is a good lock? What should I do ...
3
votes
2answers
133 views

Rekey a Kryptonite lock outside North America

Kryptonite offer a re-keying service in North America for those who failed to register their keys and have since lost all of them. I'm in Europe, and such a service is not offered here, I'm wondering ...
0
votes
1answer
165 views

bike keyhole broken

I had parked my bike outside my local grocery store and when I came out I saw that my lock had been tampered with. The keyhole where I insert my key was broken in half and the rubber coating was also ...
1
vote
5answers
369 views

Force open a U-lock

I have a kryptonite key opening u-lock, opening the lock had recently bocome stiff. But now the bike is locked outside and I can't turn the key the whole 180 degrees, only 90 degrees. It won't open. ...
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votes
3answers
300 views

Convenient bike-security measures for rural, small-town, and remote-touring environments [closed]

I originally titled this question as "I'm looking for a convenient absolutely fail-safe automatic lock that works all the time". But, judging by some rather cold responses, that title seems to be ...
1
vote
3answers
101 views

Broken Key/Lock

I have a Kryptonite U-lock and my key doesn't seem to be working, I'm not sure if the key is broken or the U-lock. How do I unlock my bike? Kryptonite isn't open and both the key and lock worked an ...
4
votes
3answers
267 views

Removing key from kryptonite lock

I can't remove the key, or open, my brand new Kryptonite lock. I can twiddle the key with about 60 degrees of movement from current position; and have attempted every movement I can think of. Have ...
2
votes
3answers
858 views

How hard is it to remove a European-style rear-wheel ring lock?

I have an old Breezer Uptown 8 with a European-style ring lock on the rear wheel. I am thinking of removing it. Does anyone have experience doing this? Is it as easy as unscrewing a bolt? It looks ...
1
vote
6answers
368 views

Key Stuck in bike lock!

My key has snapped off in my bike lock and I'm wondering if bolt cutters are going to do the job and if not what else will? Its this lock that I have:
2
votes
2answers
1k views

Can a double loop cable stand up to cable cutters?

I am curious about this, and I don't see this question anywhere on here, nor via Google. I want to know if a double loop cable can stand up to wire cutters, because they don't seem like something a ...
4
votes
2answers
572 views

Where to park a bike during a year for free ? (in the Netherlands?)

We are two French in love with the Dutch people and culture. Each time we have the time we rush there. Rather than hitchhiking (as we used to), we plan to travel across the Netherlands by bike as it ...
1
vote
0answers
61 views

What U-lock has a reasonable weight to safety ratio? [duplicate]

For my new city bike I'm thinking of getting a U-lock. Price of the bike is around $900, so I probably don't way to spend more than 10% of its price on the lock. So far, Kryptonite locks look pretty ...
1
vote
0answers
23 views

How air suspension lockout works [duplicate]

Can anyone please explain how air suspension lockout works? I mean physically what happens inside the shock? There are also multiple setting in lockout, how are they implemted?
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votes
1answer
210 views

Asking for Feedback about my Bike Lock Invention [closed]

I’m a college student and cyclist at USC. I’ve had three bikes stolen while at USC and it really annoyed me so now I’m doing something about it. I’ve created a lock that specifically secures the ...
1
vote
1answer
89 views

How to keep my bike safe around campus? [duplicate]

I am a new student in the US. I noticed that a lot of bikes were left with only a tire locked on a post. Therefore, I usually locked my bike on the water pipe outside my apartment. I put a U-lock ...
15
votes
5answers
2k views

How to keep a huge cargo bike safe in the city?

I have been biking for transportation and pleasure the whole time I've lived in Chicago, and I'm familiar with the basics of locking up and storing my commuter bike. Yesterday I added a Yuba Mundo to ...
1
vote
1answer
637 views

Would an original Abloy padlock and [toughened] chain make a good bike lock?

Why are bike locks so fancy, so specialised? Would a small padlock, e.g. original Abloy make a good bike lock when connected to a chain? http://simple.wikipedia.org/wiki/Abloy (first image) Are ...
3
votes
2answers
1k views

U/D lock or folding lock?

I have the black mounted lock you see below, and would like to buy a U/D lock or folding lock, so the bike can't be moved. I would prefer a 12mm wire where one end goes into the mounted lock, but many ...
3
votes
1answer
73 views

Bike lock bar jiggles in locked position — indicative of weakness?

I've been using the same bike lock for a number of years now (one like, but not necessarily exactly the same as, this one). I noticed today that when in the locked position there is quite a bit of ...
2
votes
2answers
499 views

My lock was rusty and key snapped while trying to unlock bike so now its permanently locked

I was trying to open the lock to use the bike, the key was jammed and I forced it so much it snapped so now part of the key is inside the lock and consequently the bike is locked and the whole lock is ...
4
votes
1answer
531 views

Is it OK to bunnyhop on a Kona/Fastrax AF2 while in Lockout Mode?

I recently got a Kona Tanuki 2012 bike that sports a Kona/Fastrax AF2 Rear Shock. Sometimes while on the road I miss bunnyhopping over things. Is it wise to lockout the Kona/Fastrax AF2 Rear Shock ...
3
votes
1answer
143 views

How to clean a combination bike lock?

So a bit of chai latte (yes, it was mine; I don't like coffee) got spilled over the front of my bike yesterday (NOT MY FAULT, I swear). My bike didn't care... but my combination lock did. The numbers ...
3
votes
1answer
127 views

How to find a durable lock mount?

I've had one Kryptonite D-lock for the last two years, and it's worked great. I typically don't ride with a pack, so I've used lock mounts (this kind) to keep it secured to the upright on my bike. ...
4
votes
4answers
844 views

Is it normal that the Abus Bordo folding lock rattles?

I have the latest Abus Bordo Granite X-Plus 6500 folding lock: It is cased inside a rubberized pouch that attaches to one of the bottle-cage locations: Very convenient, but sadly, it rattles ...
11
votes
2answers
6k views

Can a chain-lock be better against cutting than a U-lock?

I'm looking for a bike lock and, in 2013, Kryptonite have a new lock, the Evolution Series 4 Mini Chain: The chain is quoted as being only 55 cm long, and 10 mm thick. Is the blue mark below a ...
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votes
5answers
343 views

Good locks seem awfully heavy [closed]

I am looking at buying an electric bike (possible the smart ebike) -- these are not cheap. So I began to look at locks and stuff and -- these are ridiculous! 3.5-4kg even 6kg for a chain?? How do ...
5
votes
4answers
441 views

Are there electronic/active theft deterrents for bicycles?

In addition to mechanical/passive deterrents (locks, chains, etc.), what electronic/active bicycle theft deterrents exist? * My dear bicycle was stolen two weeks ago and I then vowed to dedicate my ...
-3
votes
2answers
849 views

keyed (locking) skewers and seat bolts: recommendations? [duplicate]

I know nothing is thief proof, but some systems are more of a deterrent than others. Looking for recommendations for good systems. Perhaps more importantly I'd like to hear about systems found to be ...
10
votes
5answers
877 views

How do you lock your recumbent?

I have a pair of recumbents and I have difficulties locking them safely when I have to park them in the street for long period of time. The conventional wisdom is to use a U-lock to attach the frame ...
4
votes
2answers
3k views

My bike key is broken off inside the lock

My bike key is broken off inside the lock, I already remove the key from the lock but I have no backup key to unlock it. It is a very ordinary key, just like this: Is there any way to unlock my ...
18
votes
7answers
1k views

Lock my bicycle on busy or quiet places?

When I lock my bicycle I try to lock it on quiet spots, usually on street racks situated on secondary streets. I think it will be less visible so it will attract less looks. On the other hand, if a ...
7
votes
2answers
6k views

Can I copy my u-lock key?

I have an OnGuard u-lock with only one key. I contacted OnGuard about getting a backup, but it requires a serial number which was included with the original packaging. The number is not on the lock ...
3
votes
3answers
9k views

Jammed Giant brand U-Lock. Unable to insert key

The other day I locked my bike to a fence and upon my return about an hour later, I found the lock jammed. I am unable to insert my key fully into the keyhole. My friend suspects that while locking ...
14
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5answers
2k views

Deterrents against partial (component) theft

Big question: Is there any way to increase the security of bolted on portions of a bicycle? Specifics: I cycle as my primary mode of transport (in East London) on a early 90s steel road bike with ...
6
votes
1answer
3k views

Onguard U-lock jammed

I'm currently trying to unlock my bike that has been sitting on my porch for a while, the key works and turns, and I can hear the lock engaging/disengaging, however I cannot get the shackle to come ...
2
votes
5answers
1k views

What's a good second lock option for around the frame and wheel?

I've seen a few people, specially bike messengers that use a main lock to secure their bike to a post/fence/etc. but also have a second smaller one to lock the other wheel around the frame. Which is ...
6
votes
4answers
10k views

what is the most secure bicycle combination lock?

Which bicycle lock that is a combination lock (with a code instead of keys) is the most secure device available on the market? Of course everything can be broken, and its only a matter of time, but ...
4
votes
3answers
3k views

Bike lock for a Mountain bike with easily removable wheels

I have a Trek 3500 that I need to lock up when I ride city trails, but I have been nervous as both of the wheels are incredibly easy to remove (flip a switch, rotate a lever a few times and they ...
13
votes
13answers
37k views

How to deal with lock that keeps jamming?

I have a kryptonite U lock and lately it's been sticking a lot while trying to turn the key. Usually I can eventually get the key turned. It was getting worse though and a few days ago I (unable to ...
3
votes
3answers
2k views

Alternate mount for Kryptonite U-Lock?

My wife's bike doesn't have room on the upright to mount the Krytonite U-Lock she was given as a gift. The plastic mounting bracket sticks out way too far. She has a small framed Specialized Vita. ...
6
votes
5answers
4k views

U-lock stuck on a bike

Some time ago, I stuck a U-lock on my bicycle for safe keeping, on the top tube below the seat. It's annoying when riding, and I'd like a way to remove it. I've lost the key some time ago, or I would ...
11
votes
6answers
2k views

Silencing a rattling u-lock

I'm not sure if they're all like this, but my u-lock is a bit loose between the two pieces, the U and the bar. The provided mount snaps very very tightly onto the U, leaving the bar to fend for ...