Eccentric-hub Scooter / Bike (no Pedals)

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Intro: 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

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    33 Discussions

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    randomray

    5 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 .

    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.

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    JhokurGael - Tim

    Reply 6 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!

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    Gael - TimJhokur

    Reply 6 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!

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    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 ...

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    vincent7520

    6 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 !!!...

    1 reply
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    rickpaulos

    6 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

    2 replies
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    Gael - Timrickpaulos

    Reply 6 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 :-)