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This is a how to for building a loud foghorn from easy to get plumbing fittings and an inexpensive double acting air pump, the idea was to emulate the...
Here are the basic parts to make a noise A hand operated pump, a sink waste trap and a rubber glove (for the diaphragm)
The trap needs the down tube cutting off 1mm above the level of the outer edge, this cut needs to be accurate as this is where the diapragm will go so...
Cut a circle of rubber from the glove that is just bigger than the size of the o'ring that seals the bowl, lay it on to the o'ring joint face and tra...
I am fortunate as I have a lathe and turned up the adaptor from a piece of plastic, but an adaptor can be made from standard plumbing plastic fittings...
With the parts assembled you now have a working horn and could leave it right there......
This where you can go mad! Get as many plumbing parts as you can screw and glue together to make the sound path long and wider. I added a second sin...
... I also added a shower trap...... The second picture shows an adaptor for attaching the 100mm diameter soil pipe adaptor shown stuck on the top in...
... the last part being a toilet pan connector! the rubber boot at the bottom plugs into the adaptor, the seal at the top end was removed.
The plumbing parts were all screwed together in as small a space as possible and connected up. An MDF base was cut to support the lower end using a n...
Ignore the bumble bee that flew past as I was recording and imagine this a lot louder:) http://www.vimeo.com/21517471 (I tried to imbed this usi...
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