Lotus Elan

Air Horns power supply?

PostPost by: au-yt » Sat May 31, 2014 8:06 am

Quart Meg Miles wrote:
au-yt wrote:.... As an experiment I wound the trumpet out of the housing half turn.... Bingo noise. I am yet to adjust the length of the horns to judge the effect but I guess that how they are adjusted for different sounds.
Graeme

The pitch doesn't change but as your horns worked on a different air supply the gap between diaphragm and horn start is critical on air pressure. Years ago I fitted some ear plugs and fiddled with the gap and it had a peak volume position but that was all. As I recall the horns were perfectly set up as bought.


Well after adjusting the index depth of the trumpets you are correct I found max volume and am happy with that.
I can only imagine what it was like working in the factory making the horns!
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66 one-off 2.6Ltr v8 Mid-engine Berlinetta Coupe........... in restoration
..................................................Age doesn't matter unless you are a cheese................................................
au-yt
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