Eccentric-hub Scooter / Bike (no Pedals)

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Posted in OutsideBikes

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.




Wheels Challenge

Finalist in the
Wheels Challenge

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

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    33 Comments

    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 .

    That's awesome!

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

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

    Simple and easy to prototype with. cheap, and easily replaceable, too!

    awesome

    Pretty cool... "Pogobike"!

    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

    3 replies

    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.

    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!

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

    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 ...

    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 !!!...

    1 reply

    Yeah, South of France. We're lucky...

    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

    2 replies

    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 :-)

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

    Et avec les deux roues excentrées ??…