Assembling the 8020 Chopper

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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 Discussions

    0
    Sonar0121
    Sonar0121

    2 years ago

    great project, I would have run the brake cable through the hole in the center of the 80/20

    0
    Odziz
    Odziz

    11 years ago on Introduction

    What grade of 80/20 was used in this project ? 10, 15, 30 etc.

    0
    Visitor
    Visitor

    13 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.

    0
    downhilldman
    downhilldman

    Reply 12 years ago on Introduction

    I agree, you don't really explain too much what you are doing

    0
    GibbonsRock
    GibbonsRock

    12 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

    0
    AnarchistAsian

    where did he get the seat, handlebars, and pedals from?????????????????????????????????????????????????

    0
    ewilhelm
    ewilhelm

    12 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!!!

    0
    Thornburg
    Thornburg

    Reply 12 years ago on Introduction

    That is really sad to hear knowing how much time and effort he put into that.

    0
    Dorkfish92
    Dorkfish92

    13 years ago on Introduction

    What are the metal bars called that the bike is made from?

    0
    BinaryCortex
    BinaryCortex

    Reply 13 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

    0
    sovereign
    sovereign

    Reply 12 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.

    0
    watermelon
    watermelon

    13 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!

    0
    HamO
    HamO

    13 years ago on Introduction

    Well done, great looking bike. Nice pix!