Not really but still innovative
 

Chilean Students Design Unstealable Bike

Neat idea for an urban commuter.

What if someone just cuts the seat post? Most crooks are very mechanically inclined I think the unstealable claim might be far fetched

Because the bottom of the seat post locks into the bottom split of the down tube.

Also depends on what the seat tube is made out of. Could be solid for all we know which would make it harder, take longer to cut.

You could technically steal the bike but until you break the seat post free from the lock you can't reassemble the bike to be useable.

As the article notes it would be good for parts, which you can steal without going through the hassle of cutting the seat tube.

I think its best advantage may be to encourage a thief to find an easier target.

There is always a weak link. In this design, based on the key used, I suspect it is the lock. Drill it with a small cordless. No damage to frame or seat post.

As a creative exercise, this is a great project. As a solution to the problem, it is far from elegant and smacks of a better mousetrap that is no where near as useful as the original.

Wheels can still be taken.

http://assets.goodstatic.com/s3/maga....jpg=s900x1300

Just cut the tree.

In NYC the bike thieves loosen the street signs so they can be removed from the concrete. When someone locks their bike to one of the signs the thieves simply lift the sign out of the ground and take off with the bike.

This is always the premise behind effective security. You want to make something not worth the trouble; providing (or taking advantage of) easier targets around is a great way to do that.

so the only advantage is that the bike is destroyed if stolen?

On the first bump my fat corpus would turn that into a pretzel.

yep. the down-tube should be kept as the most rigid link, torsionally.

The top tube -which is usually in simple compression- would have been a better choice to disassemble.

Don't worry, I bet they used computers and stuff.

If you are in a group being chased by a tiger you don't have to outrun the tiger... just outrun one of your colleagues! Same concept.

The bike just needs to be more difficult to steal than the next closest one, thieves will always take the easiest/fastest option.

apparently these are still in production:

http://forums.pelicanparts.com/uploa...1421281171.jpg

hmmmm
 

So, a bike that's essentially a lock, which needs to be disassembled to 'use'
or a u-lock in your back pocket....


http://forums.pelicanparts.com/uploa...1421282129.jpg