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    Can anyone help me identify this part?

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    24 Comments

    3. ot1smile on

      It’s a dynamo to power lights. It should have a click hinge so that it can be set so that the roller is touching the tyre (and being spun) for when you want lights and not touching when you don’t.

    4. zzpza on

      Bottle dynamo to power the lights from the rotation of the wheel. Not as good as a dynamo hub (but predates its common use), since the sprocket on the dynamo slips on the sidewall when the tyre is wet.

    6. Rusty_Bee on

      That is a dynamo – the top bit touches the wheel and spins as the wheel rotates, most likely connected to a light.

    7. Skaivakeeh on

      Yep, it is a bottle dynamo for bike lights.

      The black serrated wheel (when activated) should run on the tire’s serrated counterpart.

      You push that little lever at the frame mounting black part, which should click and tension the dynamo to the tire.

      To turn it off, you have to manually twist it away from the tire, and it should click into the off position.

    8. avant___gauze on

      I didn’t realize these were meant to pair with tires that had an actual grooved track for that purpose, very cool—but i’ve never seen dimpled(?) rims like that, is that supposed to improve braking performance?

    9. FernandV on

      I had one when I was a kid. Really hated it. It made the bike hard to pedal and I didn’t even needed the light since I was a kid and when I was out on the bike it was daytime.

    10. irish3212 on

      Thanks everyone. It explains the cut wire on the top. Sadly i will remove it. This is an old italian folding bike

    13. comichubble on

      I’m still using them, if you want a cheap set up and not a new hub, this works great

      for older lights, I have moved from incandescent and halogen bulbs to LEDs for a few years now, as long as the AC current is adjusted with a resistor (not to burn the LEDs), you can have 2 headlights and 2 rear lights 😁

      for newer lights, I only add resistors to 1.5v lights, all 3v lights work with these old school dynamos

    15. Content-Drive-4151 on

      That’s a small electric generator for a front light. I used to have one on my bike when I was a kid. It made it really difficult to pedal!

    17. scarletredvolare on

      The part wrapped in wire above the brake caliper and fender is the bracket that holds the headlight. Bracket clamps around the gooseneck (stem).

    24. JasperJ on

      I can’t tell what the brand is without a better picture of the logo. But obviously it’s a bottle dynamo, for the lights.

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