Questions tagged [lock]

Locks are used to secure bikes. Common varieties are cable/chain locks and U-locks (D-locks). If you're asking about suspension systems then use [tag:lockout] instead.

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2 votes
0 answers
58 views

How to take the nylon strap out of a lock mounting bracket

I am trying to attach the following bike-lock mounting bracket to a bike frame, but the nylon strap is already fastened inside the metal teeth. Is there a way to loosen the fastening mechanism without ...
3 votes
2 answers
1k views

What is the lightest chain lock that would present difficulty for bolt cutters?

I was told in a bike shop the other day that the Kryptonite Keeper 785 chain has been tested and can’t be broken with a bolt cutter. I was really looking forward to getting one of these because at the ...
0 votes
0 answers
47 views

Lock bike key go in but doesn't turn?

From few days my lock bike key go in but doesn't turn to lock or unlock with one key. I tried a second key and it go in and turn around normally they 2 key are similar and no rust on them. I am afraid ...
6 votes
7 answers
866 views

How to store my Kryptonite Kryptolock together with two large bottles in my frame?

I like to take a lock out on my one-person countryside trips as it gives some good flexibility, e.g. the ability to stop at a shop with easy of mind. However, since I changed bike to a Trek FX-3 XL ...
4 votes
2 answers
19k views

Lock jammed - key will go in and out but cannot turn

I know that similar questions have been asked here, but I can't find a question with the exact same problem encountered here. My bike was left locked during a week or two of sub-zero temperature, and ...
1 vote
2 answers
75 views

Find replacement Electric bicycle battery lock / cylinder

I have a XEED E CITY electric bicycle and the company utilizes a simple wafer battery lock The lock itself comes from a company called TKM. I have lost my key and I would like to replace the whole ...
4 votes
3 answers
4k 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 ...
1 vote
1 answer
76 views

How to adapt a tube-mounted clamped accessory for a larger diameter tube?

I bought an Abus bike lock which came with a tube mount called the Abus EaZy KF. The issue is that this mount only supports up to 36 mm diameter tube but the smallest tube on my bicycle is 38 mm. I ...
19 votes
8 answers
21k views

How do you lock up your bike trailer?

Many of us pull bike trailers - whether one-wheeled or two-wheeled -- cargo or kids. What is the best way to lock up trailers - especially when you're commuting? Most trailers come with a quick-...
3 votes
1 answer
89 views

How interchangeable are security wheel skewers?

When I bought my bike a few years ago I fitted these 'security' wheel clamps: https://www.decathlon.co.uk/p/seat-post-and-wheel-security-bike-clamps/_/R-p-170559 I've now managed to lose the ...
6 votes
4 answers
5k views

Chain lock vs U lock harder to break?

I watched a video from youtube where lockpicking lawyer recommended a Kryptonite chain lock due to being harder to break into with an angle grinder because it's not stable versus an U-lock. Does this ...
0 votes
2 answers
124 views

How expensive of a bike can be safely locked outside [closed]

How much would a bike cost at most that can be reasonably left outside before it's too much risk of theft? Areas like grocery stores parks gyms etc. I think a $500 bike can be safely locked ...
28 votes
4 answers
12k views

Someone else's lock on my bike

Earlier today, I had to leave my bike in the street to run some errands. Just after I was done attaching it to a barrier, a person came to me and asked me about my kryptonite lock as he was locking ...
3 votes
2 answers
849 views

What kind of cutting wheels cut hardened U-lock shackles best?

I have a question which might be asked by honest people wanting to protect their bike from thieves, but unfortunately can also be asked by bike thieves. I hope this won't be downvoted, my intentions ...
5 votes
2 answers
5k 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 ...
11 votes
10 answers
11k views

If you can only secure one wheel when locking bike which wheel is better

When I lock my bike I always lock the front wheel with my bike to the rack since front wheel is easier to remove. Is this the right choice? I have only one U-lock so can only secure one wheel, not ...
0 votes
4 answers
579 views

Is it worth paying double price for Kryptonite 10/10 lock?

The Kryptonite 10/10 or 9/10 security cost around 100-110 euro and the Evolution which is 8/10 security is 50. Is it worth the double price?
18 votes
10 answers
12k 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 itself,...
3 votes
7 answers
1k views

Could you please recommend bike lock for long rides and quick stops? [closed]

I have a high-end carbon bike. I do ride long on it, like 100 miles per day. I am looking a bike lock for quick stops (grab water, food, visit a restroom) therefore requirements are simple: ...
7 votes
1 answer
3k views

How do I obtain a duplicate bike key for my kryptonite U lock?

I want a duplicate key for my Kryptonite U-lock. I have the key number. Where can I order an additional key that will work?
1 vote
3 answers
419 views

Bicycle locks with alarm

I have a new bike, not very expensive... but still doesnt want it to disappear the next day and I was looking at different locks and came across lock that have an alarm which triggers a siren. Not ...
8 votes
6 answers
3k views

Is my bike safer when parked in crowded places?

Is it safer to leave a bike somewhere where there are a lot of people like Walmart parking lot or somewhere with less people like at a park? Locked in both cases but which case is more likely to get ...
5 votes
2 answers
2k views

How to remove this skewer? A security feature?

I have this skewer but it seems to have, what looks like some sort of security feature and I can't figure out how to remove. Can anyone identify this or have any suggestions on how to remove it?
6 votes
2 answers
2k 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 ...
0 votes
1 answer
226 views

Better Padlock for outdoor bike shed

I have a padlock for my outdoor bike shed. In two years I've got through 2 of them. It is of the type pictured. They have both jammed in different ways, but ultimately I need something that survives ...
6 votes
3 answers
2k views

What is a good bike-to-lock ratio in price?

What is a good ratio, in prices, between your bike and your lock so that it would be reasonable. Say if your bike is 200 GBP, a lock of 20 GBP might be too cheap (or just right!). So where do people ...
15 votes
10 answers
24k views

Ever seen a locking bag that could be locked to the bike?

This might take a little explaining. I've got stuff on my bike that removes easily and could be stolen: head light, tail light, cyclometer. If I'm riding to a concert or something, I don't want to ...
1 vote
1 answer
257 views

Recommendation for easily breakable bike lock

I want to purchase a bike lock which I can break easily if it gets jammed, preferably without any tool(or a very small/light tool which I can carry in my bag-pack). I have tried two locks and both of ...
4 votes
7 answers
674 views

How can I avoid tearing the valve loose from an inner tube with a wheel lock?

The problem It sounds foolish, but I have too often torn the valve loose from the inner tube by rotating the wheel so that the valve is pressed against a closed wheel lock. Wheel locks are common in ...
3 votes
2 answers
379 views

Securing a Penny Farthing- HOW?

Penny-Farthings aren't cheap as anybody who owns one will attest to at £1,300+ for a UDC Penny-Farthing. So I'm keen to secure it from theft, especially since I'd need to be able to evidence that I ...
2 votes
1 answer
299 views

Modern bike security, a lock with GPS and SIM card?

These days many things are getting GPS and these things often also have a SIM card, so they can connect to the internet. (I think some call this internet of things) Is there any bike lock out there ...
2 votes
3 answers
2k views

Frame lock that can lock without key inserted

Does a frame/wheel lock that can be locked without the key being inserted exist? And if so, how secure is the lock itself (I heard that this style of locks that can be locked without the key inside ...
5 votes
3 answers
542 views

Zip ties to hold smart-lock on frame

I've recently bought a smart lock for my bike that can be mounted directly on the frame. Problem is that my frame has no hole for screwing it on the frame. So I improvised with with 3 zip ties on each ...
28 votes
20 answers
12k views

How can I prevent bicycle theft while bikepacking?

I’m planning a multi-day gravel ride with a few friends. We would have to sleep in public campgrounds, which are also full of people because of the camping season. What is the best way to secure our ...
10 votes
3 answers
24k 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 ...
0 votes
2 answers
1k views

lock box to hold phone/wallet that attaches to my bicycle [duplicate]

I want to bike to the beach, lock my bike up and swim. I am looking for a high security box that either threads through my U-lock, bolts to my bike frame... so I can keep my wallet and phone in it ...
7 votes
1 answer
7k views

Is there a ulock mount that uses the bottle cage openings?

I found one that a guy made I think with 3d printers or something but seems like an excellent solution. I have a carbon frame bike and I don't want to use traditional ulock mount at the top because ...
12 votes
7 answers
4k views

How should I lock my bike in a public front wheel bike stand

In front of my gym there is front wheel bike stand that means a regular D lock will not be able to reach from the stand to the frame. Around the corner is some Sheffield style locks but they are out ...
3 votes
3 answers
2k views

How secure are Security Wheel Skewers like Zéfal Lock'n'Roll?

I'm looking for a reliable locking system for my wheels to prevent being stolen, specifically for the front wheel as I always attach the rear one together with the frame with the U-lock. I look for ...
2 votes
1 answer
512 views

How does the Pog Security Washer work when using it with the Pinhead wheel locks?

I noticed when I got some Pinhead Wheel Locks that they came with an extra funky looking washer that looks like this: They didn't describe much about it, but I did find some information about them: ...
3 votes
3 answers
18k views

Lock jammed on bike

My cable lock is jammed. The key fits in but won't turn. What can I do? My bike is locked up outside on the street so I guess the first thing would be to put a second lock on it in case the first ...
3 votes
1 answer
585 views

Attach Kryptonite Messenger Mini+

I got a Kryptonite Messenger Mini+ with a rear wheel extender. Really great design except for one thing: there's no way to clip it to the frame. The clip that I have depends on fitting on the straight ...
2 votes
1 answer
146 views

How to register a custom built for Kryptonite's ATPO Program?

When registering for Kryptonite's ATPO Program here, you are asked for a bicycle make and model. With a custom-built, I have no idea what to provide there. I contacted customer service, with no reply ...
4 votes
2 answers
237 views

When carrying a lock on body, which statistical data and experiences to consider re: safety concerns

With a custom-built bike in somewhat higher price regions, I now ended up with a high-security u-lock, which is also very heavy-weight. I also own a heavy-weight chain lock. For several reasons and ...
13 votes
3 answers
3k 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 ...
1 vote
0 answers
216 views

Fluid combination lock resetting, forgot to turn the resetting knob back

Out of the box, tried to reset the combination, forgot the step after setting the new number, where we turn the knob back, I forgot to turn the knob back, locked it. now it wont open with neither the ...
11 votes
6 answers
4k views

Warranty on lock damaged during attempted theft

Someone attempted to steal my girlfriend's bike tonight and they damaged the lock. Do you guys know if we can use the warranty to get it exchanged? The lock has a 2 year warranty and I'm planning to ...
3 votes
1 answer
196 views

Abus Folding Lock: Adding Damping to Joints

I want to add damping to the joints on an Abus Folding Lock, such that it maintains its shape if I stick it through a hole or something. I received some brief feedback that I could use rubber bands ...
7 votes
1 answer
444 views

Does Abus print blind bitting codes on their D-Lock bikes (or do thieves go through the trouble to

I've got several YourPlus Abus locks (all keyed the same) so that I can have one key for basically all the family bikes. The other day I noticed that one of my D-Locks had a plastic part missing, ...
2 votes
1 answer
713 views

Heavy bike lock mount on a carbon frame

I have a foldable Abus Bordo 6500 which weights around 1.7kg. It came with a sturdy, rubber based case that can be mounted using bottle cage mounts. Is this OK to do so on a carbon frame, or does it ...