Introduction: Make Your Own Vintage Bike Buzzer

It's prime bike trail weather right now! Have you ever been on a busy bike trail where a simple "On your left" or "Coming through" is not quite enough to alert headphone wearing, walkers, talkers, and "jazzercisers" of your presence?
Well a couple of weeks ago I was remembering bikes that had shiny, cool looking (and loud) electric buzzers on their handlebars. Next thing you know I noticed one at a swap sale (pictured above)...but they wanted $30 just for the buzzer!...the seller claimed that he's seen just the button go for $15....too rich for me, so I passed on the sale.  When I got back to "the internets" I found that I may have missed out on a bargain...many similar vintage buzzers are being sold on ebay for upwards of $40!

This Instructable resulted because I decided now was a perfect time to try to "make one myself!"  (and hopefully wake up some walkers!)

Make sure you click on the video on this page to hear what it sounds like!

(P.S. This Instructable submitted by the Rabbit-Hole Maker Space as part of the Instructables Sponsorship Program.)

Materials Needed to Make a Bike Buzzer:
- 1 12V DC buzzer $.75 cents from my favorite surplus store (they have buckets of these things)
- 1 momentary pushbutton $1.50 - easy to find
- 20" twisted pair wire - had some spare trailer wire laying around, worked perfectly for this (especially for Packer Fans :-()
- 9V battery (I tested the buzzer and it worked great at 9V)
- 9V battery holder
- Electrical Tape

Materials needed to make it a Vintage Bike Buzzer: 
- 1 Chrome Ray-O-Vac flashlight - $2 - Found at a swap sale, the perfect look... some of these are still available new. Nicely fit the buzzer exactly!
- 1 top of a 2 liter pop/soda bottle
- 3 zip ties.  
- 1 Universal Velcro flashlight handlebar holder - $4 (or more zip ties) - already had one of these

Tools needed:
x-acto knife
drill (for hole in the flashlight and bottle top)
soldering iron (optional)

Step 1: Let's Get Started

Test the Circuit - I started by testing the's about as simple as a circuit can get, but since the buzzer was from a surplus store and marked as "12V DC buzzer", I wanted to see if I really needed 12V or not...I soldered the buzzer to some wire and tried a 9V power supply and yes it worked great!

Assemble the Button - You can see below that I already used an X-acto knife to chop the top off of a 2 liter bottle. I also drilled a hole in the bottle cap the correct size for the momentary button. The bottle top and cap seemed to replicate the look of the vintage button pretty well. Originally thought I would paint it silver but decided black was ok.

Step 2: Assemble and Then Let's Get Riding!

- drill a small hole in the bottom end of the flashlight and fish the green and yellow trailer wire through it.
- keep some spare wire in case you want to mount the buzzer on a different bike, I wrapped the extra around the 9V
- the buzzer fits perfectly in the flashlight, so just screw the top of the flashlight on after it.
- I decided to use zip ties instead of the velcro for mounting the buzzer

Sounds Great! Let's Ride! 
- What a fun sounding horn/buzzer, just like I remember as a kid!, 
- I'm going to watch how this setup works as I try it out this summer. I may go back to the velcro for the flashlight but I also may mount the zip ties underneath the flashlight so they are not visible...may even move to hose clamps. Alternatively I may go to a smaller but less vintage-look container if I find the Ray-O-Vac is too bulky

Thank you for checking out this instructable! - Good luck on all your projects!

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