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Bicycle horns that sound just like car horns.
600 backers pledged $52,837 to help bring this project to life.

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Loud Bicycle March Update

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Hi everyone,

It has only been a couple of months since we shipped and the feedback has been overwhelming. Take a look at this message sent by Roger from Houston.

"The LoudBicycle horn already saved my neck once, by making a car clear where I was riding. As it turned out, that person was drunk, and they came perilously close to hitting me. I scared them off with the horn. I might not be here but for the horn."

You made this happen! From myself, Roger and all the future Loud Bicyclers riding with improved safety, THANK YOU. 

Feedback survey 

Now that some of you have gotten a chance to see and test the horns, specific feedback will be really helpful. Even if you haven’t installed the horn yet, it would be great if you would fill out this short survey. We want to know what online forums you use to discuss bicycle things; and what you thought about the bolts for installing the horn. Thanks so much!

Missing horns, battery chargers and delayed replacement horns

To those of you who are waiting for a horn or wall charger, whether you recently gave us your address or are waiting on a replacement of a faulty unit - I am so so sorry for the extra delay.
We have horns still in stock and we have wall chargers too. The reason for the delay is because sadly the relationship with our shipping partner has broken down. I have been trying to make amends or find a new fulfillment center. In the end, I'll be mailing out the chargers myself this coming week, and the horns in a few weeks once I regain access to our inventory. Thanks so much for your patience, I hope we can soon step firmly out of the rut of delays and into smooth running operations.

More Loud Bicycle horns in production

I’m super happy to announce that we have started production on a new batch of horns! In case any of you would like to order additional units you can get them at:

January 2015 Loud Bicycle Update

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Hi everyone,

We really appreciate all the photos and videos posted and special thanks for vigilant quality feedback. Please remember to test your horn soon or you may need to wait for the second batch for a replacement in case you have a faulty unit.

If you haven’t received your horn yet, please send your address to and we’ll find out what went wrong.

Loud Bicycle chargers

We finally have the chargers coming in, if you need one then create an order in this super-secret backer store page Use the coupon BESAFEBELOUD to get one charger for free (domestic shipping/handling is $5). We will have lots in stock, so you can get as many as you like. They are for US outlets.

Epic backer videos

Now for a quick run-down of some wonderful backer videos

Jeffrey Daley made this super well done video; he’s basically a director.

 Another amazingly well done video from Spain (almost like a documentary) from Gordon Dionne 

 Cyclegaz already reviewed it (amazing accent). Check out his other videos too, he’s something of a celebrity in England. 

Short and sweet videos from:
Telmo Fernandes
A nice article accompanied by a sweet vine (do not try this at home)
An unboxing video, we’re all in suspense for the followup where he tests the horn.

Stay in touch

If we missed yours in this list, or you made a new video/photo please you can post yours over at, or

Post-ship update


For backers only. If you're a backer of this project, please log in to read this post.

Go and check your mail for a horn


For backers only. If you're a backer of this project, please log in to read this post.

Horn production complete


The horns are done!!! We’ll confirm the shipping time in a couple days, but optimistically they should get to our US fulfillment center in less than two weeks. We’ll ship them out to you as soon as they arrive. This means it’s time to gather some information.


Surveys are coming! Most of you haven’t given us your address yet so you will soon receive an email asking for it. You must follow the link and fill out the survey to get your horn. If you have given us your address (HERO backers) you’ll get a different form to fill out in case you moved.

There is an optional survey too for additional items, these will be sold as extras through our website but you can get them for free now (or later) because we love you so much!

  • We provide a Mini USB cable which will let you charge the horn with a computer or any USB wall plug (like those cube shaped apple ones for example). If you need a USB Wall Charger then check the box for that in the optional survey. They won’t ship with your horns but if you need one we hope to get it to you before your first re-charge.
  • Some of you (ahoy bent riders!!) need cables longer than the standard 2.5 ft. (76cm). Good news, we’ll have some 2.5 ft. extension cables for you! Fill out the optional survey if you need one of those. If you think you need more than one then send us an email.

Link to survey ----> Add-on items form link

New team member

Jan Marie is joining Loud Bicycle! Do not be alarmed if you receive communications from her. She’s a pretty awesome musician by the way and she’s also a key member of CommonWheels Bicycle Co-Op.

More details about production

More pictures have been posted to this album so check it out if you are interested.

We were able to catch several cases of failed individual components, and in each case there were enough spare parts to get the horn working right so we have a full production yield! Also, we’ll be able to send the failed component back to the supplier and get more good ones for the second batch. Specific problems we found were faulty MOSFET switches which resulted in continuous honking (ouch), battery problems where the battery couldn’t supply the necessary current and a maladjusted tuning screw in one of the car horns.

In some cases (~10%) the green LED to indicate a full charge is slightly blocked on the inside by a stray piece of ‘flash’ plastic. We noticed and started fixing this about halfway through production. Since it isn’t critical (you can still see the light) we thought it best not to delay to adjust the horns that were already built.

We improved on our method for dampening the sound in the factory, first with ziploc bags of water which worked really well, then with an industrial ear protection rig. The tones are a direct proxy for volume so the testing is still effective.

A big thanks

There were only 8 people who built all of the bike horns (one of them took the picture). A first production run is always difficult but together we were able to work out some pretty efficient assembly methods.

Note: silly version of this photo here.

That's all for now, comments welcome as usual and don’t forget the surveys!