am going to get me one of these...

http://thehornit.com/

Just to say I have nothing to gain and no interest in the product other than as a cyclist who is frustrated by being ignored by motorists, suicidal pedestrians alike - NO LONGER I SAY ...Blast em!

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Permalink Reply by Martin Turner on February 10, 2012 at 17:42

I want one of these....

The "Was 3000", made by Wyle Laboratories can produce a sound level of 165dB, which can literally melt the wax out of your ears.

Permalink Reply by greg looyestyn on February 10, 2012 at 19:09

might need a frame to mount one of these on the bars.

Permalink Reply by Martin Turner on February 10, 2012 at 19:15

The bike would of course have to be a BMC

Permalink Reply by Ian Rawley on February 10, 2012 at 20:33

Or a Rocky Mountain - sorry MTB!

Permalink Reply by gordon on February 10, 2012 at 22:18

Meh.... about 8 bucks at jaycar will get you the bits to make your own. 

Piezo/battery/switch.

Permalink Reply by Kasey VP on February 11, 2012 at 6:36

that's awesome. I want one too:)  I need a warning device for my commuting bike to alert the iPod-zombies on the shared path I can access for small parts of my commute:)

Permalink Reply by Clive Palfrey on February 11, 2012 at 9:50

Hope you'll give us a full report when you get it Ian, sounds like there could be some interest from AC members, I've been looking for something like this for ages.

Permalink Reply by MARK FERGUSON (SPARTACUS) on February 11, 2012 at 9:58

I love it!

Permalink Reply by Ian Rawley on February 11, 2012 at 14:37

Interesting to compare the scale shown here looks like 140dB is a fair effort...

Table of sound levels L (loudness) and
corresponding sound pressure and sound intensity
Sound Sources (Noise)
Examples with distance		 Sound Pressure
Level Lp dB SPL		 Sound Pressure p 
N/m2 = Pa
sound field quantity		 Sound Intensity I  
W/m2
sound energy quantity
Jet aircraft, 50 m away 140    200    100
Threshold of pain 130    63.2    10
Threshold of discomfort 120    20    1
Chainsaw, 1 m distance 110    6.3    0.1
Disco, 1 m from speaker 100    2    0.01
Diesel truck, 10 m away   90    0.63    0.001
Kerbside of busy road, 5 m   80    0.2    0.0001
Vacuum cleaner, distance 1 m   70    0.063    0.00001
Conversational speech, 1 m   60    0.02    0.000001
Average home   50    0.0063    0.0000001
Quiet library   40    0.002    0.00000001
Quiet bedroom at night   30    0.00063    0.000000001

Background in TV studio

   20    0.0002    0.0000000001
Rustling leaves in the distance   10    0.000063    0.00000000001
Threshold of hearing     0    0.00002    0.000000000001

Next up I will need a helmet cam to record the reactions...any recommendations?

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