Instructables

How to keep your bike seat from getting stolen.

Picture of How to keep your bike seat from getting stolen.
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Use an old chain and a trashed innertube to keep your seat by getting stolen. Most bike related theft is prevented if the act will take the theif longer than a few seconds. Even if they do have a bolt cutter on them, they're less likely to take your seat if they have to pull the bolt cutter out of their bag.

We learned this trick fromStreet Level Cycles at Aquatic Park in Berkeley. Support your local community bike program!

 
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Step 1: Take an old chain and measure a loop.

Picture of Take an old chain and measure a loop.
Remember to set the seatpost at the high end of the range where you like it.

Step 2: Break the chain at the length of the loop you measured.

Picture of Break the chain at the length of the loop you measured.

Step 3: Cut a length of trashed innertube to the chain you cut.

Picture of Cut a length of trashed innertube to the chain you cut.

Step 4: Drop the chain into the innertube all the way.

Picture of Drop the chain into the innertube all the way.

Step 5: Rejoin the chain.

Picture of Rejoin the chain.
flavien0082 years ago
I did exactly the same BUT with a plastic rope inside the tube!!
1) do a loop with a palstic rope (like 1m long)
2) attatch by a nail inside the top of the bike-seat-tube
3) evaluate if the length is ok but doing the same temporaty inside the bottom of the bike-tube
4) change the lenth if necessary
5) put the mail, cut it 3 mm away from the outside of the tube, hit it with a hammer
(no sound of metal, invisible, you can move and turn the seat, but not extract it while the rope is here, then you need a hammer or a saw, because the rope is ptotected by the tubes) !
enjoy!
jolshefsky5 years ago
That's a genius idea. Here I've been using vinyl-coated stainless steel cables with crimps all this time!
I vote for the steel cables!
Ubbo2 years ago
Couldn't you just break the chain with that same tool again?
SWV17875 years ago
I like this alot, but does the chain swaying behind you while riding drive you nuts? I think it might me...
It shouldnt clang too much IMO with the innertube around it.
zap strap (zip tie) it to the seat tube.
Hallmar3 years ago
Wonderful idea, but when i leave me bike in a bad place, i just take the seat off and then i lock it along my front wheel and frame:]
shift_nismo4 years ago
cant you just run your chain through the saddle when locking up your bike?
SurferGeek5 years ago

Great idea but how about this:

Replace the quick release on the seat with a tamper resistant bolt that way the only thing you need to change the height of the seat would be the tamper resistant wrench which is usually quite small and easily pocketed.

Example:
http://www.brycefastener.com/about.htm

Either way, your's is a nice solution but I wouldn't like the added weight and the annoyance of the chain bouncing around.

Yambo5 years ago
If the problem is caused because you have a quick release seat, why don't you just take the seat with you?
jeff-o Yambo5 years ago
It's cumbersome, and sometimes you just don't have the room to carry it with you. Plus, there's a chance you'll forget it...