Just noticed another option for a loud air horn is to use an out of date CO2 fire extinguisher. Not quite sure what the maths is but apparently you get a lot more usage from co2 than from compressed air so you can use the thing as a disposable item.
I suppose some sort of restriction in the air line would be needed to prevent damage to the horn itself.
I've routed 8mm copper pipe over a distance of about 5 feet so that should help reduce the pressure wave one would get from a CO2 extinguisher opening.
As I am using a threaded rod to actuate the fire extinguisher via a threaded plastic ball in front of the Morse controls it might also be worth looking at restricting the opening of the extinguisher valve by adjusting the rod length.
I feel some experiments coming up but don't want to disturb any local humans too much.
So now we begin to get the picture, you're looking at developing a stealth fuckin canon.
I should have it working this weekend. Going to try both options. I know the first option works as I have done it before. Big fire extinguishers already have Schrader valves in the neck which is handy.
Empty fire extinguisher pumped up to 120psi with a tyre pump and also experimenting with a CO2 extinguisher which will be cracked open just a little bit. Definitely need to limit the output of that as it will probably destroy the horn if given too much pressure and potential for harm also. Not quite sure what the icing situation is going to care needed.
My idea to limit the opening is to drill out the hole where the safety pin goes and put an undersized bolt and nut through the holes. This should make it possible to squeeze the levers and just open the valve a tiny bit before the bolt prevents further travel.
Can experiment with different bolt thicknesses. That's one option the other is to have a bolt and two locking nuts on one of the levers which acts as an adjustable stopper to limit travel.
I think with a bit of "tuning" of the valve opening travel a good quality of repeatable blast could be achieved and plenty of supply due to the high volume of gas stored.
loddon: Thanks for the confirmation, I am thinking of changing tablets because of the cough but maybe I wont
Mar 31, 2020 13:07:45 GMT
JohnV: There are other drugs but I haven't found the side effects with Ramipril to be bad, it seems to just make my throat a bit more sensitive so things that might have just tickled my throat and make me want to clear it now make me cough.
Mar 31, 2020 13:58:31 GMT
loddon: The cough is the only one I get from ramipril, although the combinatins of drugs I am on has interesting effects.
Apr 1, 2020 15:56:47 GMT