How to Make a Magic U-Lock

28,444

14

40

Posted

Introduction: How to Make a Magic U-Lock

I have a bike, and I had a U-Lock.
I became supremely tired of keeping track of the keys, unlocking the U-lock, finding a suitable sturdy metal bar, and re-locking the u-lock - especially in the winter when the lock was cold and my hands would freeze.
So here's a way to get all the benefits of the appearance of the U-lock, without the hassle.

The idea is similar to this: Homemade U-Lock

Step 1: It's Everywhere, and Free

If you want a broken U-lock, it will appear.
They drape, discarded, over the high-theft-area bike racks.
They fill dumpsters at your local bike repair shop.

I got 22 of them from my local campus police's bike auction.
They cut off the locks and sell the bikes.
The locks were in a big pile, conveniently cut near the joint, and free.
I walked away with an armload.

After that, all you need is superglue, some magnets, and rocking good tunes.
I like "Ghostwriter" by RJD2.
The Smiths are good, too.

Step 2: Assemble

Glue the magnets in, so they don't touch, but pull the lock closed when they're near enough.

Step 3: Golden Locks!

Now you can hook your bike up to those convenient steel tree-replacements that fill your city.

I feel that if anyone was going to go to the effort to steal one of the bikes I ride, they've already got it. This is just to filter those who see "unchained bike" from those who really want it.

Works well enough.

Share

Recommendations

  • Sew Warm Contest 2018

    Sew Warm Contest 2018
  • Gluten Free Challenge

    Gluten Free Challenge
  • Minecraft Challenge 2018

    Minecraft Challenge 2018
user

We have a be nice policy.
Please be positive and constructive.

Tips

Questions

40 Comments

yeah, that's totally going to get ripped off. I know people in portland that jiggle every bike lock they see, just to check if it's actually locked. and sadly 1/10 of them are not locked, and he gets himself a new cannondale weekly.

I live in Boston, which isn't as bad as San Francisco, but still has a reasonably high theft rate. My point is that bikes get stolen and all locks suck, and this is a way to make one that at least you can find pleasant to use.

Bike locks keep honest people honest... If someone has truly decided they want your bike - no bike lock is going to stop them :/

they should make a bike that is it's own lock: the bike splits in two on a hinge, and locks shut. Unlock it, open the bike, slip it over a pole, close the bike, and lock it. If someone wants the bike, they have to cut the bike...rendering it useless

hilarious, i love the idea

or cut the pole rendering the pole useless but thats the city's problem

Or just detach the brakes. So when they try to ride away... Ouch. (Sorry for the almost 2-year-old post)

**bumps 1 year old post to suggest installing a cam lock in the frame to lock the steering column at a 90 degree angle**

Hey Weissensteinburg, for some ideas, check out the Slingshot bikes, and the Biomega Boston / Puma. Combining the folding of the Slingshot with the lock of the Biomega would be sweet like peanut butter and chocolate. Of course, these days, my bike security involves having a crappy looking old Peugeot that looks like it's falling apart. The only indication that it's a well oiled speeder are the clipless pedals, which are also the only things I'd miss if it were stolen.