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!
We learned this trick fromStreet Level Cycles at Aquatic Park in Berkeley. Support your local community bike program!
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Signing UpStep 1: Take an old chain and measure a loop.
Remember to set the seatpost at the high end of the range where you like it.
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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!
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.