Theft deterrent?

[Orraman]

Would it be reasonable to take more assertive action to prevent the theft of bicycles?
A normal weak and wimpy motion alarm could be fastened to the handlebars, to remind any owner with poor short term memory that the alarm is active.
Unauthorised movement of the bike over a timed period could start one of two existing mechanisms that could perhaps be installed in the seat tube.

1)
A smoke generator of the type used in radio controlled models where the EC Approved coloured dye is staining but not permanent.
2)
A liquid disrupter (a one shot water gun) again using an EC Approved dye but perhaps using a CO2 bulb as the propellant.
Some types of saddle might benefit from Mae West's coffee recipe.

Dave

RC Smoke System for Electric flight

Using Bomb Disrupters in Demining Operations, by Jennifer Cox (7.3)

 

[winterdog]

no chance we could rig up an electric fence style jolt every couple of seconds if the alarm is not turned off.

 

[Stephen-Gately]

Why not just do what I do.....

 

[eddieo]

I take it you are retired with plenty of time on your hands.......you forgot to attach it to something

 

[fishingpaul]

Why not just do what I do.....

tried it but it took me 3 hours to get home,which included 20 minutes cycling.

 

[Vikki]

Pedalling a 400 kilo bike got me

 

[carpetbagger]

it took me 3 years to find the right key for the right lock

 

[Orraman]

Thank you Stephen, I did enjoy that photo, could you find a suitable one on that recipe?

3)
A radio controlled servo could slowly rotate the barrel of a brake cable adjuster to apply full braking power.

Consider being soaked with dyed water, trailing a streamer of coloured smoke, brakes being applied and a sounder as loud as permitted.

Radio is not required, a small 8 pin microcontroller can accept input from sensors and output RC type pulses to control all devices mentioned.
Should anyone be interested in perusing ideas of this type I could try to assist with the microcontroller.
Just as on Blue Peter, here's one I made earlier.

Dave

 

[Haku]

How about some sort of mechanism to spray this on the tyres, so when they're rotating you get a large surface area covered in the stuff:

Amazon.com: 4 Bottles Liquid Ass Fart Spray

Apparently it's the most foul smelling liquid you can buy.

 

[Patrick]

How about some sort of mechanism to spray this on the tyres, so when they're rotating you get a large surface area covered in the stuff:

Amazon.com: 4 Bottles Liquid Ass Fart Spray

Apparently it's the most foul smelling liquid you can buy.

So the would-be thief is driven away by the smell of your bike, leaving you free to ride home on it...

 

[fishingpaul]

You could make it look as though the wiring and the battery was a bomb,nobody would go near the bike let alone try and steal it,main threat would be from the bomb squad doing a controlled explosion on it.

 

[chuff_nutty]

GPS tracking built into the frame. That way you can track them down and cut off their fingers.

It might cost allot to install.

 

[alsmith]

I joined the bikeregister scheme so there are stickers and stencils on and a magic wand sensor for id if recovered- won't stop a get me home theft but maybe stop the more serious thefts. If it got stolen and recovered hopefully it would be useable.......

 

[Andrew harvey]

write your name and address on a plastic card and drop it down the seat post.
It will not stop a theft but will help identification.