Noob here. Horn questions

Hey all
I came across an old air horn. It was off of an old Mercedes box truck. It was mounted on the top. It’s been left out in the weather for around 15 years.
I also found a 10 gallon tank.
Here are my questions.
The horns were chrome. The chrome is peeling off (of course, they’re old). Should I sand the chrome off and paint these? Or just leave them as is since no one will see them?
Also, like I said I have a 10 gallon tank. I do not have a compressor. How many short blows will I get if I do not use a compressor? I don’t plan on using it a lot, more for when I’m on the farm.
The piece that connects the air line to the horn is broken off inside the horn. I know I can get it out, but I don’t know if these things blow. Can I take it to a gas station air tank and just put it up to the air in hole and see if it makes a noise? Or will that not work?
Also, like I said, it is an old horn. It has the little leaver on it for a cable for the user to pull to honk like on older big rigs. Is there a way to swap that out? Does anyone sell pieces that I can replace it with to make it push button?
I don’t want to invest a lot of money since it was all free.

Thanks guys

Rooster

The compressor is used to recharge the tank with air. The amount of air that exists in the tank, the pressure built and how much pressure the horn draws determines how long a blast will last.

This could possibly work if the air hose builds enough pressure to push the horn.

The leaver sounds like a manual valve of some sort. To make it push button, you would have to swap it over to a system with an electric valve (unless of course you wanted a cool pulley system for a electric, manual valve! http://www.trainhornforums.com/showthread.php?t=6092&highlight=manual+electric) We do have the electric valves on our website. Here is a link to our electric valves. http://www.hornblasters.com/products/category.php?c=air-valves-and-vale-kits

Thanks guys

Rooster[/QUOTE]

The compressor is used to recharge the tank with air. The amount of air that exists in the tank, the pressure built and how much pressure the horn draws determines how long a blast will last.

This could possibly work if the air hose builds enough pressure to push the horn.

The leaver sounds like a manual valve of some sort. To make it push button, you would have to swap it over to a system with an electric valve (unless of course you wanted a cool pulley system for a electric, manual valve! http://www.trainhornforums.com/showthread.php?t=6092&highlight=manual+electric) We do have the electric valves on our website. Here is a link to our electric valves. http://www.hornblasters.com/products/category.php?c=air-valves-and-vale-kits

Welcome to the forum. You might get 1 or 2 honks from 10 gallons, depending on the horns and how air hungry they are, before the pressure drops too much. Consider getting 1 really good compressor like Oasis (shameless plug…LOL) or 2 smaller ones. The smaller ones usually have a 5 gallon warranty limit per compressor.