Introduction: Assembling the 8020 Chopper
Step by step assembly guide.
Step 1: The Headset
Step 2: Attach Forks
You wan to make sure that there is sufficient pressure on the bearing cups, otherwise there will be play in the headset.
Step 3: Front Dropouts and Brake
Front dropouts - fairly obvious, but need to be well aligned for wheel to sit straight.
Step 4: Handlebars
Step 5: Attach Top and Downtubes
When attaching brackets, its a good idea to loosely tighten them because chances are they will need to be adjusted later.
Step 6: Seat Tube and Bottom Bracket
Step 7: Attach Top Tube to Seat Tube
Step 8: Rear Rails and Dropouts
Remember to put the chain inside the rear triangle before attaching the dropout.
Step 9: Mount the Rear Wheel
This is where you are going to make all of your geometry adjustments and tighten every thing down.
Step 10: Mount the Seat Braces
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18 Comments
5 years ago
great project, I would have run the brake cable through the hole in the center of the 80/20
13 years ago on Introduction
What grade of 80/20 was used in this project ? 10, 15, 30 etc.
15 years ago on Introduction
Great photos, but you really do need to add more text. A picture does not really help anyone identify the possible problems in the process.
Reply 14 years ago on Introduction
I agree, you don't really explain too much what you are doing
14 years ago on Introduction
Hey dude! The bike is all kinds of awesome (+5!) , but I'd really really really like to know more about the 80/20 based CNC table in the back- it looks to me like it's a convertible plasma torch and wood router. I'm currently building an 80/20 based CNC machine. Cheers, Jim
14 years ago on Introduction
he he he, check this out
14 years ago on Introduction
where did he get the seat, handlebars, and pedals from?????????????????????????????????????????????????
14 years ago on Introduction
this=cool=i give it a 5!!!
14 years ago on Introduction
Its Beautiful!
14 years ago on Introduction
Alert! This bike, one of the very first Instructables projects, was stolen from Alameda, CA near Webster and Atlantic. If you see anyone riding it, take pictures and report it! There's even a reward!: 24' length of 8020!!!
Reply 14 years ago on Introduction
That is really sad to hear knowing how much time and effort he put into that.
Reply 14 years ago on Introduction
sorry about that : (
15 years ago on Introduction
What are the metal bars called that the bike is made from?
Reply 15 years ago on Introduction
I was wondering the same thing, so I searched on 8020 as it says in the title and found this site. 8020.net
Reply 14 years ago on Introduction
its an aluminum extrusion used in industry to build nearly anything. It's relatively inexpensive, and can be found discounted online.
15 years ago on Introduction
What a great idea for a bike you want to take with you on the bus, train or plane with just a few less parts!
15 years ago on Introduction
Well done, great looking bike. Nice pix!
15 years ago on Introduction
Was this from that bike design class you guys had awhile back?