Atomic Zombie's Firecracker kids' chopper bicycle

Picture of Atomic Zombie's Firecracker kids' chopper bicycle
Choppers aren't just for grownups, dude! In fact, with the abundance of little kids' bikes at yard sales, scrap yards and dumpsters, it only makes sense that this had to be done. Even brand new, a 12-inch wheel kids bike will only set you back a little more than 50 bucks.

As for learning to ride a chopper, kids just don't seem to know the difference - they wobble around on the bike without a care in the world. Most kids that tried the small choppers that I made, could ride them on the first try. I guess if you're not used to a standard bicycle yet it may even be easier to master a chopper. Old dogs, new tricks, you get the idea.

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Step 1: Choose the donor bike

Picture of Choose the donor bike
Because of the size of the tubing on these bikes, and the fact that the rider will not weight very much, a single tube can be used to extend the frame into a chopper. Notice the oversized down tube on this bike (Photo 1), it will be easy to lengthen this to create a stretched frame chopper.

Step 2: Tear it down to its basic parts

Picture of Tear it down to its basic parts
It sure doesn't take long to break a small bike like this down to the individual bolts (Photo 2). Overall, the entire bike was in good shape, even though it was found under the scrap pile at the dump. I guess these bikes only see a year or two of life due to the speed at which a kid will outgrow a frame this size. For the record, there are seven common bicycle wheel sizes - 12", 14", 16", 20", 24", 26", and 28". Do you think they did this so a kid would need a new bike every year until they stop growing?! Hmmm.
YaënD2 days ago

I saw it for the big mountain bike and let a comment to say I want to try to do the same for may son but it is done yet.

duckman6334 years ago
I wish i could weld 2 but i cant

do you what i should do
TSC4 years ago
fortneja6 years ago
If you didn't need to extend the forks much, you could just use the fork off a full size adult bike. Just an idea if you want to do as little welding as possible.
exactly what I was thinking.
Robot Lover5 years ago
my friend made an electro- magnetic one and had shockks
camholland5 years ago
im like 16 and i have a motor ona bike like this i think it wud b sweet if i had it a chopper
pandaboy2925 years ago
when i was little my grandpa put a steering wheel from a go cart on my bike.
clickdeath8 years ago
dunno if im into the lack of brakes, but kids seem tough enough to take a few tumbles every now and then!!
in America coaster brakes are the standard for kid's bikes (you pedal backwards to stop), not like in England or other countries where those handle brakes are used...coaster brakes give a cleaner look to the bike and don't wear down like other brakes.
lol that why trees are here to stop us
It probably brakes when you pedal backwards; a lot of kids' bikes do that instead of a handbrake.
metaljoe06 years ago
it's got caster brakes, thats what that little tab attached to the rear hub is for. you can see it well on the breakdown photo.
bedbugg27 years ago
so simple!
lemonie8 years ago
The before & after says it all, this chopper is way cooler than the bike you started with.
VirtualJWN8 years ago
Cool and nicely done. I built one of these for my younger cousin when I was about 12. Worked well on pavement. not so great on gravel. Caster (or camber????) on wheel changed too quickly to steer effectively.
Crash21088 years ago
This was on the news...

Second movie, near the end
pazu8 years ago
It's cool! I like it, but I don't know if I can make a modification like you or not.
KoolKat (author)  pazu8 years ago
Sure you can! Check out .
Lots of folks in the builder's forum are newbies and creating some very cool chops.
bigboybob8 years ago
that is the pimp mobile right ther
KoolKat (author)  bigboybob8 years ago
The little girls were checking out our young rider and he loved every minute of it! Sweeeet!
i say get the kid a miny bike and let im go at it
KoolKat (author) 8 years ago
It has a coaster brake.
CementTruck8 years ago
It might be cool to extend the pedal crank housing forward and use a banana seat. This way the kids aren't sitting so stiff and vertical, but rather laid, just like the bike. The banana seat could hang slightly over the back seat, and you could lean the handle bars back even farther. Just a thought.. Hmm....forget the crank housing extension. Can you say weedeater motor with a torque converter?