Race Start Horn for Dinghy Sailing - Stadium Horn by DanRom624

Last crawled date: 3 years, 5 months ago

THIS OBJECT IS COVERED BY CREATIVE COMMONS - ATTRIBUTION - NON-COMMERCIAL - SHARE-ALIKE LICENSE [CC BY-NC-SA]
USERS CAN DOWNLOAD AND PRINT FOR PERSONAL USE, AND/OR DISTRIBUTE IF ACCOMPANIED BY APPROPRIATE CREDITS.ANY USE OF THIS OBJECT FOR COMMERCIAL PURPOSES IS FORBIDDEN
It is allowed to remix, transform, or build upon this object, only if the contributions are distributed under the same license.
CAUTION!!!
Use the horn only when outdoors!
Using it indoors may cause severe harm to your hearing!
Starting Horn for Dinghy Sailing - Stadium HornFor detailed instructions, download the PDF file here on Thingiverse
This horn provides a sharp, very well audible sound, excellent for giving starts during a sailing race.
It is also suitable for making noise when supporting your team at the stadium (if allowed by local laws).
It is very handy, reliable, easy to store and carry on board, and its sound is long-lasting!
Indeed, its battery can provide sufficient energy for 20 minutes of continuous sound (i.e.: the remarkable amount of more than 250 starting procedures including some general recalls.)
It is also reasonably cheap: altogether it costs slightly more than 50 bucks.
Roughly equivalent to only 4 Air Can Horns (one can do not last more than one regatta/match - when you are lucky ;-)
The source drawing on Onshape is parametric. You can adjust its key dimensions to match those of your building parts.
Here is a list of the parts needed, suggested links for purchasing them online, tools and materials needed for the assembly.
Parts needed (see also images above):
- 1x Motorcycle horn (approx. price: 15.00 USD)
- 1x Battery Bosch mod. BAT-414, or equivalent (approx. price: 16.00 USD)
- 1x Battery charger (approx. price: 19.00 USD)
- 1x Pushbutton 3A-6A (approx. price: 0.80 USD)
- 1x Panel switch 6A (approx. price: 0.40 USD)
- 2x Faston terminals - male
- 2x Faston terminals - female
- 25+25 cm (10+10 in) Electrical wire ≥1.5mm2 (AWG 16)
- 30 m (85g) PLA filament
TOTAL COST (incl. building materials and filament) = approximately 55 USD
Suggested links:

Horn: https://amzn.to/3m4Ek4B
Battery: https://amzn.to/3pZueVa
Charger: https://amzn.to/3nT3Jim
Pushbuttons: https://amzn.to/377yARd
Switches: https://amzn.to/2J8MJ91
Faston terminals: https://amzn.to/3nPDFVh
Tools and materials:
- X-Acto knife with #11 blade (or similar tool)
- Pliers
- Stripping pliers
- Wire cutter
- Soldering iron
- Solder
- Wrench (suitable size for the horn fixing nut)
- Silicone sealant
- Drill bit 4.5 mm (or 3/16 in) (optional)
- Heat shrink and heat gun (optional)
- Hemostat locking pliers (optional)
- Tester (optional)

Detailed assembly instructions are provided as a PDF file, within the "Thing Files" section of this page (https://www.thingiverse.com/download:8940437)