Picture of Bike Spike-  theft deterrent.

Bike thieves are a pain in the bottom; I thought that I would get my own back.

Ladies and Gentlemen, I give you  . . . the bike spike.

When locking your bicycle in a dodgy area simply remove your saddle and replace it with the bike spike.

Please read on  . . .

Step 1: Materials and tools

Picture of Materials and tools
A piece of wood and a chisel.

I took a piece of my Eucalyptus firewood.


Legalities aside, what's to say someone won't just do a stand and ride. Peddling it without sitting down.

patatarium10 months ago
I may do it
HelmutHound2 years ago
Nice "Dad's Army" quote!
FriendOfHumanity (author)  HelmutHound2 years ago
Stupid boy !
Don't panic!
FriendOfHumanity (author)  wobbler1 year ago

We're doomed !

FriendOfHumanity (author)  wobbler1 year ago

We're doomed !

artsynova1 year ago

Maybe just a THREADED―sharpened or not―piece of chisel wood of about 3 feet long that when riding goes on a holder (like surfers use to carry the surfboards. It wouldn't be a booby trap because is obvious to anyone, but the deterrent would be the time spent in undoing the stick. A thief needs the time to undo the thread.

Funny but illegal. It falls under the booby trap law. Not to mention if someone fell on it ud be in serious trouble! But still funny.
It's not designed to trap your booby. Or do you have a different riding style to me?
Booby traps are hidden, or have hidden triggers.

The author has even given a visual warning of the dangers!
verence Kiteman2 years ago

Everything in plain sight. You steel it. You ride it, You ouuuuuchhh!

Impracticable, but ...... niiiiiiiiice!
HA Believe it or not, I once had a seat stolen off my bike. The bike was locked up securely but the seat had one of those quick disconnect levers and someone stole it. I took that lever off when I put a new seat on.
You would be surprised how difficult it is to ride a bike without a seat.
It's even harder without wheels.
wobbler1 year ago
This is why you should never ride your bike when drunk.
markc3102 years ago
This is seriously funny.
Tempting, very tempting.
FriendOfHumanity (author)  markc3102 years ago
Do it, do it !
marple2002 years ago
FriendOfHumanity (author)  marple2002 years ago
Thanks man.
FriendOfHumanity (author)  marple2002 years ago
Thanks man.
Teachable2 years ago
This is not safe for innocent people walking by if this is in public. There are laws against this called mayhem laws. You could cause a child or adult to lose their eye or kill themselves.
FriendOfHumanity (author)  Teachable2 years ago
Natural selection ?
mholland22 years ago
I can think of something else to use in its place that would deter lots also...unless they were into that kind of thing in public. It'd also not dangerous at all lol. Thanks for the laugh)
FriendOfHumanity (author)  mholland22 years ago
Dear Mholland,

Tee hee hee; Your comment made me think of the film , " men who stare at goats".

Actually, I think that your idea would work better than the spike; people would not go near  it..
I would have to wait until the cover of darkness to collect my bike though.

Kind Regardski

I meant 'burn after reading', not 'Men who stare at goats',
mdaniel52 years ago
Ya defiantly not a booby trap. A good idea to keep kids from taking your bike for a joy ride, oh wait that's the car, can you make one for a car?
FriendOfHumanity (author)  mdaniel52 years ago
Hello, did you read the comment left by Drakekay  ?
They left this link. . .  I think you'll like it.

Kiteman2 years ago
I saw this, and I ... clenched!
FriendOfHumanity (author)  Kiteman2 years ago
Look at it every day and by the end of the week you will be toned and fit.

blkhawk2 years ago
Instead of Friend of Humanity you should name yourself Vlad Drakul or Vlad the Impaler. This Romanian king impaled thousands of his people and when the armies of his enemies saw this they were horrified.
FriendOfHumanity (author)  blkhawk2 years ago
Dear Bihawk,

You may be onto something; when I was a child I had The Hamilyn Book Of Horror that featured among others Vlad the Impaler and the Countess Bathora.
I seem to remember that Vlad also invited all the tramps and gypsies to a huge banquet in a Hall and then locked the doors and burned it down; he wasn't nice.

Maybe this bike spike is a latent effect of reading the book in my formative years.

Best Wishes


Drakekay2 years ago
haa haa this reminds me of the MagnaVolt car anti theft device from Robo cop!!! :D
FriendOfHumanity (author)  Drakekay2 years ago
Reffner2 years ago
What's to stop someone from picking it up and throwing it in the back of their truck?
FriendOfHumanity (author)  Reffner2 years ago
Dear Reffner,

Nothing will stop determined professional bike thieves with cutting equipment.

Hopefully this spike would deter the small time thief who steals bikes individually; given a choice of bikes, mine would seem the less desirable.

I am willing to accept the view though, that this will do nothing to stop my bike being stolen.

Kind Regards

jdrach852 years ago
Wouldn't the thief be able to remove the spike, or am I missing something?
Only if you carry a hex key around with you...
verence2 years ago
Far too lazy to do that, but exactly what to I would like to happen to whoever steels my bike. XD