Emergency & Sports Whistles

cults3d

WARNING - VERY LOUD These whistles can reach extremely loud levels. Please exercise caution and avoid blowing them in enclosed spaces (indoors). These might be an annoyance to others, so please be considerate of those nearby. Whistles Several whistles are included in this project. S1 - Single Column Edge Tone D2 - Dual Column Edge Tone I am considering designing a referee whistle. If you think I should, please share your thoughts! About Hello! The airsoft group I play with often lacks sufficient whistles (we typically only had one), and I wanted to design one that could be shared with other players. These could serve as game or emergency whistles if necessary. I set forth a few design criteria: Easy to Blow (minimal back pressure) Loud + Good Sound Signature (little hissing, wasted air, and consistent tone/behavior from mid to high volume) Simple + Small (minimalistic) Durable + Hole (for Paracord) Easy to Print (no supports, little material, & high success rate) Whistle Designs In addition to the criteria above, I wanted two whistle designs: Small Emergency Whistle (S1) Oscillating Game Whistle ("we-yu-we-yu-we-yu") (D2) I really wanted a small whistle that could be printed in large quantities. That was my top priority. This would allow me to more easily print multiple whistles (faster & cheaper) to share them with more people. I figured this would also make it a better event whistle. The second whistle would have an oscillating sound for games. A slightly bigger whistle, perhaps more robust, but definitely was oscillating (dual tone or pea/ball). I didn't want a jingle of a pea/ball, so I decided to recycle my single column edge tone whistle. A side feature I decided to incorporate into my larger whistle was to be very buoyant at lower densities. This was achieved with two areas in the whistle where there is plenty of room for buoyancy tanks. Whistles I Really Liked I tried several whistles on Thingiverse. These are whistles that I really liked, but didn't meet my physical requirements. These have the best sound signature and are the easiest to blow out of all the whistles I tried (in my opinion). Better Whistle Referee/Police Whistle (with pea/ball) Muddtt's Emergency Whistle I didn't use these due to durability concerns, especially with the string/cord holes. Sometimes the peas/balls don't spin in the ref style whistles, so you have to give them a pretty sizable blow. Besides the slight ball issue, the sound signature for the two ref whistles is REALLY good. I'm very impressed by both, and thus didn't feel a need to design a ref whistle myself. Other Whistles I tried I really liked the shape of the V29 (everyone knows it), but it needs to be blown really hard with LOTS of air to get a good sound. I wanted something easier to blow and produce. Most of the whistles I tried just didn't work, hardly worked, weren't durable enough, or didn't have a good sound signature. I had high hopes for a lot of the whistles on Thingiverse, but they fell short in one way or another. Feedback Better images will be added soon! I want to improve this whistle design, so please share your thoughts! Should I adjust the frequency/pitch, adjust the shelf? I want to hear your thoughts! Again, if you think I should take a crack at a Ref Whistle, please let me know!