Eccentric-hub Scooter / Bike (no Pedals)

26,889

52

31

Introduction: Eccentric-hub Scooter / Bike (no Pedals)

Tim and Gael want to build a Hula bike .

Main Problem : how to easily displace the hub from the center of the wheel ? Play around with spokes ? No ! way too painful . But Tim is a carpenter and has access to a router . 

So They decided to craft it out of plywood planks . Quick, easy,  strong enough, not that awful, and works fine.




Step 1: Wheel Building .

For this step, we used a router to cut two planks into circles . We cut them in two parts, at 1/3 of the edge to be able to put them around the hub. The hub being wider on its extremities, we couldn't simply drill a hole and slide it onto the hub . We took care to alternate the cutting directions , so the wooden assembly stay strong .

Also, we checked the 1/3 rapport was good enough to allow the wheel to spin without rubbing against the frame . It was a wheel from a smaller bicycle .

Step 2: Bike Structure and Finishing Touches .

We took the pedals off, raunchily welded a bar instead, at the extremities of which we placed inner tubes straps, for user's relative safety. The front berake stayed in place, but we of course had to take off the rear one . It could be possible to have one, but our goal was to keep things easy to set up .

Step 3: Extra Special Bonus Videos

Wheels Challenge

Finalist in the
Wheels Challenge

Woodworking Challenge

Participated in the
Woodworking Challenge

Be the First to Share

    Recommendations

    • The 1000th Contest

      The 1000th Contest
    • Battery Powered Contest

      Battery Powered Contest
    • Modify It Speed Challenge

      Modify It Speed Challenge

    31 Discussions

    0
    randomray
    randomray

    7 years ago on Introduction

    Right , now I don't plan on building one of these , but I was wondering how I could build wooden wheels and still have rubber tires . I thought this method might work , but hadn't tried it yet . Thanks for proving the idea for me . Saved me some time . Great job guys .

    0
    joshfromga
    joshfromga

    Reply 8 years ago on Introduction

    1. just because, or
    2. I saw one built for a man with dwarfism. regular bikes didn't fit his proportions.

    0
    woodstockbirdy
    woodstockbirdy

    Reply 8 years ago on Introduction

    Yah, but why do you need to make all the parts out of wood???

    Cool project!

    I think you should add the terms "eccentric-hub scooter" and (or) "whymcycle" to the search terms, or maybe even the title.

    Hula-bike is a specific product made by a company, much like the Ingo-Bike in the 1930s.

    Wikipedia - Eccentric-hub scooter

    0
    Gael - Tim
    Gael - Tim

    Reply 8 years ago on Introduction

    Thanks a lot for the advice, I'm changing the the title and adding the terms you suggested.
    I'd only heard of the hula-bike as a commercial version of this type of bike but I find the Ingo-bike you evoked much cooler!
    Once again thank you for the tips.

    0
    Jhokur
    Jhokur

    Reply 8 years ago on Introduction

    Awesome project Gael - Tim! When I was a kid my grandparents had a "Kangaroo Scooter" noted in the Wiki LegoBrickMaster7 noted, and I always wanted to find one when I got older - now I can make one out of my busted bike!

    0
    Gael - Tim
    Gael - Tim

    Reply 8 years ago on Introduction

    Cool! If you need any help in the process of building yours, go ahead and ask questions, I'm glad to help!

    0
    Gael - Tim
    Gael - Tim

    Reply 8 years ago on Introduction

    You can go at a reasonable speed but the faster you go, the more it shakes aroud and eventually if you go too fast (downhill for example) you'll get thrown off the bike ...

    0
    vincent7520
    vincent7520

    8 years ago on Introduction

    Beautiful South of France … 
    How come do you have such a nice weather ?...
    It's supposed to be raining all over the country !

    Great project too !!!...

    0
    rickpaulos
    rickpaulos

    8 years ago on Introduction

    I built 3 similar bikes last year.

    But I calculated the spoke lengths needed to rebuild wheels,
    I did both front & rear wheels,
    I used a standard coaster brake hub, cranks, pedals and chain.
    yehaw!

    http://www.youtube.com/watch?v=nisn6lmi9tQ

    rick

    0
    Gael - Tim
    Gael - Tim

    Reply 8 years ago on Introduction

    Nice video and above all, real nice job!
    We considered using spokes too but it felt a little too ambitious so we went for the easy way... However I have to agree that spokes look way cooler than big planks of wood :-)

    0
    Gael - Tim
    Gael - Tim

    Reply 8 years ago on Introduction

    Disc brakes would look extra cool on one of your bikes!