Bike imobilizer

Mr Marri

Right, I had a brain wave last night, how about a bike mobilizer!

It would be build into/inside the bottom bracket and would lock the crank and you would have to destroy the frame or crank to remove it with out the key.

You couldn't sell the bike as the would be un-cyclable? It would be a light and effective alternative to heavier and heavier bike locks.

What do you guys think?

petethedrummer

Show me some drawings and I'll start believing.

C3PO

Surely the "bike thief" would just wheel the bike away and replace the crank at their leisure!

Mr Marri

RPL1 wrote: »

Surely the "bike thief" would just wheel the bike away and replace the crank at their leisure!

Yes of course they could wheel it away, but the point is that the mechanism would be sealed within the bottom break and you would have to drill/mill out the crank, which would be difficult to do and would take several hours work and specialist, then you would have to replace the crank and hope you haven't damage the frame in the process. It would be easier to mug a little old lady.

JMJR

RPL1 wrote: »

Surely the "bike thief" would just wheel the bike away and replace the crank at their leisure!

not if it was fixed gear!

Mr Marri

Sorry, yes of course you would still need a smaller lighter conventional lock.

feck sake lads

excellent idea no idea how your going to make it but it sound like you could be on to a winner .
best of luck hope you get it off the ground

Leroy42

I think I already have a bike immobiliser on my bike.

As soon as I get to the bottom of a hill the thing just grinds to a halt.






I'll get my coat:o

Hogzy

The bike would probably be long gone before the thief realises the bike will be destroyed if tampered with.

You still loose out at the end of the day.

el tel

Something like this pointless antitheft bicycle lock mechanism from the mists of time which is arranged in the frame tube to immobilise front fork and pedal crank simultaneously?

Piercemeear

This reminds me of like those NCAD Industrial Design exhibitions. I was at this year's one and that's a futuristic bike that requires "no maintenance". Great! I'll take one. I mean, I would if what you are suggesting was possible outside of your imagination and CAD.

(It's a bit like the old frame-mounted wheel locks. I like those, as a supplementary lock.)

Beasty

.... how about a decent pair of locks? Not infallible I know, but then again nothing is and at least it encourages thieves to look elsewhere ....

Lumen

Here's an idea: frame couplers, like S&S, except lockable with a key.

You unlock the couplers when you leave the bike. It can therefore be stolen, but falls apart when ridden, and it's impossible to fix it without cutting out the couplers and re-welding the frame, which no-one would bother with.

The advantage is that it weighs almost nothing, doesn't rattle, and can't be lost.

Obviously it doesn't secure the wheels, but you could adopt the same approach with the hubs. When the key is removed the hub becomes useless.

So, unlocking the bike would mean three quick turns of the key on the frame and each hub.

It doesn't solve the locking problem, but maybe an integrated frame lock would be enough to discourage theft - the thief would only be gaining access to finishing kit and groupset parts.