Introduction: Chopper Bicycle Made From Found Materials

Picture of Chopper Bicycle Made From Found Materials

So we've seen a lot of variations on the chopper bicycle out there. I have watched many roll by with awe and jealousy. I finally couldn't take it anymore and set out to make one of my own. In order to avoid being derivative, I decided that my bike would be made from as few actual bike parts as possible. While a noble notion, this proved quite difficult, especially having no experience building bikes in the first place. I am a sculptor above all else, so I figured if the thing failed, it would still be art. Fortunately the project was a success, and is briefly documented here.
To see what the rest of my work looks like, please visit my website:

Step 1: Frame

Picture of Frame

I think this thing first took off when I had the idea to use baseball bats for front forks. This would provide the ridiculously long stride required of a chopper and satisfy my interest in using found and recycled materials. The head tube bearings I confess were salvaged from an old bike.
The frame consists of sections from a curved railing that was cut and re-welded to mimic a bike frame.

Step 2: Wheels, Handle Bars

Picture of Wheels, Handle Bars

While the frame was built to accept standard wheels, I was relieved to find these old aluminum wheel chair wheels instead. I had plans to strip them to bare metal, but the anodizing proved too tough to compete with. I think the biggest challenge of the whole project was boring out the rear wheel rim to accept a bike hub.
Old school handle bars, and BMX pedal cranks were begrudgingly used, but some vacuum cleaner handles stepped in to keep things artsy.

Step 3: Test Drive

Picture of Test Drive

By splicing two bike chains together I was able to get things moving enough to test it. Amazingly enough, nothing collapsed, fell off, or caught fire. The big lesson learned was that the solid rubber wheel chair wheels did not afford much comfort. Some kind of suspension would be needed.

Step 4: Detailing

Picture of Detailing

Emboldened by the first test drive, I decided to smooth the ride a bit with a suspension seat. A classic banana seat, handle bar bracket, and shock absorber were combined to achieve this. I really wanted fenders for a sort of vintage look. After a good deal of head scratching and searching I found a very large industrial cooking pot. By cutting the bottom off, and center out, and quartering the remaining ring, I had material enough to weld back together into pretty convincing fenders.
The output end of a meat grinder and an old glass brake light cover formed a nice head light. I used LED's for better efficiency.

Step 5: Final Touches

Picture of Final Touches

Now that I knew the bike could be ridden, and the rough seat problem had been addressed, it was time to consider how I was going to stop this thing. Borrowing a trick I picked up from my friend Wendell, I decided to use a circular saw blade as a disk brake. It was a bit of a hassle to accomplish this with the wheel chair wheel, but it had no rims to speak of, so traditional bike brakes were out of the question.
A pan lid, pipe section and some sheet metal yielded a nice chain guard that echoed the other lines in the frame.
For the brake light I used a totally unidentifiable thingy. All I know is that it looked as though it had spent its whole life under water. About 80% of it was torched away, leaving only the rocket shape at its very tip. A standard truck brake light cover was then mounted over some LED's.

Step 6: Voila!

Picture of Voila!

While I probably only spent a few weeks actually working on the project, the whole process dragged out for over a year. At the end of it all I finally have a totally ridiculous ride to go get lunch at my studio. All the measurements were made to accommodate my longer than average stride (I am 6' 4") so the bike came out to be eight feet long. This basically means that it is much better at turning heads than at turning corners. The solid wheels and fixed gear ratio also mean that I won't be breaking any land speed records. All that being said, my shop is in a level part of town with restaurants only blocks away. Given those circumstances, I couldn't be happier with my results. I have a terrific looking bike that manages to be totally unusual and still functional. Mission accomplished!


crash183 (author)2014-01-14

Dr. Seuss would be jealous!!! That is brilliant!!! Great design, great fab, wonderful job!!! I'm sorry, but I'm going to have to steal some of your ideas!

feeblington (author)2013-01-27

very nice - particularly liek the saw blade disk brake - may have to nab that idea for my DH bike!!

Hazzard2theworld911 (author)2012-08-31

I love this bike. I is beautiful, and I love the idea of circ-saw blades a brakes. I like th overall design, but the Handlebars don't really seem to fit...
I'm not a fan of thweels either, and I wanted to kow If they held up atall... they seem little rickety...

Megrathea69 (author)2011-07-30

I think the fact that most of items/material used to make this bike are from items unrelated to bikes is probably the most interesting point/feature. I have a few old bikes lying up the stairs and i was thinking of putting a 24 inch wheel on the front of a regular frame with a normal 26 inch rear wheel.I dont have a proper workshop,just my spare room and dont have metal working capabilities but thought this would give me a simple chopper bike.

combot55 (author)2008-05-18

that sawblade looks kinda dangerous...

sdsmithies (author)combot552011-06-02

That's kind of the point, giving it a little bad azz feel.

TheMadScientist (author)combot552008-08-16

its for the zombies...

combot55 (author)TheMadScientist2008-08-22

bump much?

R1Ch0 (author)combot552009-01-28

zombie sympathiser

combot55 (author)R1Ch02009-01-28

another bump much?

Madrias357 (author)combot552009-06-21

*thud* You aren't the only one that can bump.

The nerdling (author)2011-05-31

change the wheels but it still is so cool

Pyro45 (author)2007-06-26

That's pretty cool. I made one out of several junk bikes at the dump and parts in the bike section of WalMart. No offense, but it looks like urs is just made out of junk :( Smooth lines though it looks clean :)

dragonsniper (author)Pyro452011-05-17

thats kind of the point

yesican (author)2009-05-22

What I love about this bike is (besides the fact that it's unutterably brilliant) it can't be stolen! It's so unique, a thief couldn't sell it as-is - it's far too identifiable and therefore easily traceable. Nor could it be broken down for parts - because most of those parts aren't bicycle parts. Well done! :)

nemomatic (author)yesican2009-05-22

This theory has been tested. A few months back someone broke into my shop and stole my mountain bike. It was leaning between my chopper and my Quicksilver scooter.

dragonsniper (author)nemomatic2011-05-17

nice sry to hear bout ur mtn bike though

mason0190 (author)2010-06-27

add LEDs, stereo, horn, motor, low rider (wree-wree wree-wree up and down motions... come to school on THAT and be treated like a freckin PIMP!

dragonsniper (author)mason01902011-05-17


johnny payphone (author)2011-01-19

Ha ha ha great! In the Rat Patrol we were always trying to outdo each other with fork material- mop handles, kid's bikes, springs, foosball table bars, whatever. First time I've seen a baseball bat chopper. You are a bricoleur!

laserdude (author)2011-01-18

that is the best chopper i have ever seen in my entire life!!!!!!!!!!!!!!!!!!!!!

nemomatic (author)laserdude2011-01-19

Thanks man!

Marsh (author)2010-05-31

 Diggin' the sawblade! Definitely using that on mine!

bow s410 (author)2010-01-11

you my friend are a genius

TheFullMetalAlchemist (author)2009-12-04

 Great bike, those wheels look great. How much of the rear wheel did you have to bore out to get the bike hub to fit?

 I don't remember the exact amount but it was very little.  Around 1/16 of an inch.

fciron (author)2008-05-02

Nice bike! I always enjoy some explanation of the found objects. I have a chopper with an eight foot wheelbase that steers quite well. Google 'rake and trail' to find out about the layout. Basically you adjust the forks so that the pivot axis hits the ground about where the wheel touches. Pivot angle should hit between 2 - 4.5 inches in front of the wheel. I just bent my fork tubes in the vice to accomplish this. I don't think that approach will work with the bats. Maybe for your next bike.

mies911 (author)fciron2009-10-22

oh so cool lihgts look beautiful
did you weld that circularsawblade into wheels cool ride :)

diggety2 (author)2009-05-22

Beautiful work! I'm in San Diego and just heard of your exhibit at DEVICE...can't wait to check it out!

nemomatic (author)diggety22009-05-22

Hey thanks. Glad you'll catch the show. They have my Giant Squid right now.

Lumpydump (author)2009-05-21

We likes this very much! Kudos!

ewilhelm (author)2007-06-25

I love the saw blade disc brake!

sharlston (author)ewilhelm2009-05-21

lol me too its recycled and waiting for the zombie attack lol

R1Ch0 (author)2009-01-28

AND! how long did the build take?

golddigger1559 (author)2008-09-22

dude you gotta send me a material list and some plans for that thing man

wrksnfx (author)2008-08-21

The handle bar are okay, but I'd try to find a set of ape hangers to give it that real chopper look and feal.

Junk Mail (author)2008-06-04

The wheel chair wheels make it look really cool - it was the first thing i saw when i opened the page. Great Instructables

pyrotechnical (author)2008-05-14

Awesome bike, mad skillage, major props

bedbugg2 (author)2007-12-16


Unclejack857 (author)2007-12-04

VERY COOL! I agree with everyone in them saying it looks like a kids dream bike! I love the frame! I also love the pure distinctiveness of it! Never saw anything like it! I LOVE IT!

StarmanF (author)2007-11-14

very cool bike it looks like a kid dream cycle that flies once it hits top speed! Wish I had one! Thumbs UP!

nemomatic (author)StarmanF2007-11-18

Its totally a kid vision. Im working on a motor scooter version that I hope will take me closer to "lift off".

farbs (author)2007-08-31

because the back fender isnt connected to the rear wheel, it gives it a look of anti-gravity too. Though, I wonder what would happen if those shocks dont hold enough weight and you are putting direct pressure on an unsupported fender. especially with the position the seat is in, and the length of the bike. sweet bike though!

farbs (author)2007-08-31

that chainguard is awesome.
and the baseball bats?
pretty awesome i have to say. =]

carbon (author)2007-06-26

Stop that! Stop being so great at what you do! :P Lurve the little spaceship on the back. :)

rocknrollskwurl (author)2007-06-25

one word, awsome!

fossilfool (author)2007-06-25

Very spacy design. I'm a big fan of the tail light and disc brakes. Great stuff.

stevoIution (author)2007-06-24

I thought the baseball bat forks were brilliant, then I saw the saw blade brake disk! Awesome job, keep up the good work.

rerat (author)2007-06-24

beautiful bike, I havn't ridden a bike in YEARS. I'm going to college next year, and need a bike..or a bus pass. I'd rather have a bike. I'm a big fucker too, tall and heavy. 6'6, 260 lbs. and some bikes just don't agree with me, any suggestions?

Honus (author)2007-06-24

Outstanding use of found objects! Being a chopper bike builder myself I can really appreciate what you've done here.

About This Instructable




Bio: I am a kinetic sculptor who works from found materials.
More by nemomatic:"Homunculus" Kinetic Robot sculpture from found materialsGiant Kinetic Praying Mantis Sculpture from found materials"Quicksilver" Retro-Future Scooter from appliances and scrap metal
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