Monday, November 09, 2009

16 Homemade Electronic Shifting Bicycle From Germany - Part I


Here's a toast to cheap.

Rumor has it that this German person named 'Norbert' made this rig under 50 euros (ha!). Not only did he make all the servomotor associated shifting mechanism himself, he also built the aero bike from bottom up including the wheels.

Pay close attention to this servo setup. Here are the pics, obtained from WW Forum. Credits to you guys out there.

What looks to be an 8 speed Dura Ace rear derailleur combined with a servomotor!






Norbert. One question. When will you start your cycling company? :)

Please read about how he made this setup in Part II.



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16 comments:

  1. Anonymous10:48 PM

    Is this a "Me too" at Di2?? Lol...

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  2. I think its a Ci2. It seems he started working on this before Shimano did. Check the forum link I attached and read up on the time these pictures were published. :)

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  3. Wow I'm speechless! Is there a video of how it works? Love to see it in action.

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  4. Oh I'm sorry Anon. What I meant is I think he released his design before Shimano brought theirs to market. :)

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  5. Darryl12:02 AM

    50 euros? Unless the bike is made out of cardboard... or did you mean just the shifting?

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  6. Its fabulous what people can come up with.

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  7. I love it! Conceptually this doesn't seem to be much of a stretch. Calibrating it to be just right must've taken a lot of time, I bet.

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  8. puts shiamano to shame.

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  9. Chris Valva11:26 AM

    Agree partly with the commentor above, although there's no indication if it works well.

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  10. Anonymous3:54 PM

    I think those wheels are the most impressive part of the bike

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  11. I wonder if he removed the springs from the derailleurs & just used the servos to move them both ways.
    From my limited experience with RC planes when I was young I don't remember servos in that size having that much torque. Especially at rest I'd imagine the springs could overcome the friction in the servo.

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  12. Okay, so the frame is also obviously DIY, which is pretty cool but in the realm of homebrew known science.

    But the forum discussion says this guy also made his own wheels???

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  13. Frtiz,

    I'll be posting something on his design. Gimme a few...

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  14. Very cool! I love to see this kind of DIY innovation. Looking forward to hearing more about the rest of the bike

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  15. @ Kieselghur : The specs of the type of servo is in Part II. Hopefully that should give you some insights. I'm poor in German so I can't understand too much from the catalog.

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  16. Anonymous1:24 AM

    Commendable job but I'm not going to ride this bike! Look at the derailleur side rear dropout!

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Thank you. I read every single comment.