(Yet Another) Simple LED Flashlight Bike Light




About: http://twitter.com/michaelk42

This is less an instructable than a simple re-purposing hack, for those not into building an LED light system from scratch.

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Step 1: Find Yourself a Spare/unused U-lock Holder.

This is pretty much the key element. I've never used any of mine to actually hold a U-lock for very long, and somehow they just seem to collect in my parts boxes. Your FLBS probably has some extra lying around, too.

Thing is, you're going to put the "fixed" half on your top tube instead of your seat tube, with the lock-holding bit horizontal(ishly) off to the left or right.

Step 2: Find the Right Size LED Flashlight, Stick It In.

Yeah. That's pretty much it then, isn't it? This picture ought to look familiar, anyway...

Depending on the light you get and your top tube diameter you might have use for the shims that come with these mounts, or just use $TAPETYPE tape/cut-up innertube.

The rest of this bike is at my Velospace if you're interested.

Be the First to Share


    • Make it Glow Contest

      Make it Glow Contest
    • STEM Contest

      STEM Contest
    • Furniture Contest

      Furniture Contest

    9 Discussions

    i had two conduit hangers attatched head to head. i have a plastic thing so imight use this on my new beater i found today

    this way is a little cleaner than the tape idea... my local bike shop has the brackets (which i know are extras from customers not wanting it for their locks) for $2 each. about the same price as a roll of electrical tape.


    10 years ago on Introduction

    Simple design, effective, and cheap. I like it. You could also use twist ties to hold the light on if you don't have a handy bracket like he does. A+


    10 years ago on Introduction

    Looks like a neat tactical flashlight for a gun the way you have it!


    10 years ago on Step 2

    Thanks for that. I do something very similar. Try te same flashlight. loop a rubberband around one end, under the handlebar and back around to the other end of the flashlight. adjustable!


    12 years ago on Introduction

    great idea in theory dj, have some of these brackets lying around too! But.......where do your knees go? would only work if u pedal with your knees right out like those guys who 'ride a bike but i'm still hard - look at my knees way out'