Questions tagged [lock]

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

Filter by
Sorted by
Tagged with
26 votes
4 answers
10k 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
7 answers
678 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
1k 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
176 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 ...
7 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
1k 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
180 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 ...
11 votes
10 answers
5k 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 ...
5 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
21k 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
235 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
599 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 ...
1 vote
2 answers
295 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
207 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
1k 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
286 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
10k 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
22k 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
477 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
6k 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
3k 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
341 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
15k 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
400 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
109 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
228 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
147 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
183 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
382 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
380 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 ...
20 votes
10 answers
41k views

How can I keep my bike safe in my garage?

I just got a brand new bike. I keep it in the garage, but my wife has a habit of leaving the garage door up. Right now, there's nothing in my garage that I can really lock the bike to. How can I ...
8 votes
2 answers
8k 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 ...
3 votes
1 answer
1k views

Are U-lock "wheel extenders" sold separately?

I quite like the Kryptonite U-lock "wheel extender" idea - but I'm less attached to Kryptonite as a company - and even less so to the Messenger series of their locks, which is the only one that has ...
19 votes
7 answers
18k 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
4 answers
13k views

Jammed Giant brand U-Lock. Unable to insert key [duplicate]

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 ...
5 votes
6 answers
3k 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 while ...
2 votes
5 answers
5k 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. I'...
1 vote
0 answers
212 views

Stiff, hard to use poplock, rockshox recon silver

My bike is equipped with front suspension Rockshox Recon Silver with PopLock remote lock. The use of that control is VERY stiff and HARD to lock (very easy to unlock though). Every time I need to ...
4 votes
3 answers
4k views

Are modern frame locks "safe"?

In the older days I remember that frame locks were soldered onto the frame, but today they seem to be just screwed onto it (example film of installation can be found here). Doesn't this open for the ...
4 votes
4 answers
445 views

Why am I breaking Pitlock spring washers so frequently?

I'm hoping some pitlock users out there can help me out. I've installed these on a pair of new bikes to add some protection for some expensive wheels. They seem to be a decent deterrent. My problem is ...
50 votes
9 answers
7k views

Best type of bike lock (materials, style, etc.)

I recently lost the keys to my lock and had to borrow a bolt cutter to free my bike. It was a bit of an eye opener to realise a) just how easy it was for the bolt cutters to cut through my D Lock (<...
4 votes
1 answer
1k views

Kryptonite lock falling apart?

Just a quick question but should the Kryptonite lock fall apart like this when it's open without they key in? To me it feels too loose but I'm not sure. Guess it locks anyways?
14 votes
6 answers
5k 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
2 answers
492 views

Does carrying a chain lock around on the frame reduce a bicycle's performance?

I have a Montra rock 650B MTB. I use 2 lock systems - 1 cable and 1 chain lock for added security. Both are attached to the frame while I cycle. The chain-lock is pretty heavy (around 700 grams). I ...
10 votes
3 answers
9k views

Where are stolen bikes sold?

I live in a city on the east coast. I recently had my bike stolen. The frame was locked to a bike rack using a u-lock. They either picked or cut the u-lock. My simple question is: where do thieves ...
16 votes
2 answers
10k 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 ...