Is this air compressor good?

I want to inflate tires and run an air horn.

 

Should be good enough for what you want to do with it

 

thanks. Yeah it’s 350 USD but I think it’s cheap Chinese product.

 

For that kind of money, may want to consider Viair 400p

 

I have the 300 p portable. Think I could hardwire it to a tank? Or even this setup and have them both on the tank?

 

Itd be easy enough to make your own setup with your 300p

 

really? I could convert it to on board?

I also have these air tanks I found in a junk yard.

 

As long as the tanks are safe to use. Just need to either mount the 300p to the tank, or mount it elsewhere, then hook the output to the tank. A few fittings and away you go. Depends on your DIY level

 

Rusty tanks can be sketchy at high pressure. Not too trustworthy. I found a new aluminum tank - military surplus - for about 30 bucks. Look around.

I put a pressure switch on it that limits the outfit to 100% duty cycle - which on mine (a 450 Viair) is about 105 psi.

All of this costs - but you won't regret making a good, safe, convenient installation

 

Awesome. I’ll get the tanks checked.

what hoses and pressure things do I need?

 

Take a look around on TW - finding a secure spot to mount the compressor would be a first step. Mine is in a cross-bed tool box - some have figured a way to put them under the hood, used the cubbys in the bed and so-on. I've seen a version where a guy used a 40mm ammo box to case it - rigged to be portable. Then bolted the ammo can to the bed side rail. His used a jumper cable to get current direct off the battery and a quick disconnect air outlet. Just closes the lid and padlocks it - stores the filler hose behind the seat.

Mine is on an electrical circuit built off the battery, switched under the hood and has a circuit breaker to protect the wiring. Uses #6 welding cable feed back to the tool box (as an example) to handle the air compressor and some lighting. The compressor you showed at the start has a 23 amp max load - the wiring, breaker or fuses have to be able to safely deal with that kind of load. That unit in your picture shows a Viair style unit - and it could be they could be the supplier. Mine came out of a John Deere planter.

I didn't want the sort of situation where the pressure load on the compressor would cause it to exceed the 100% duty cycle rating and eventually shut it off on thermal protection (often built into compressors). Viair and other outfits sell pressure switches that will stop the compressor when it reaches the 100% load level and I got one that shuts off at 105 psi then comes on again when pressure drops to 85 psi. With this in place the outfit will run without a tank - it just doesn't have any "surge" capacity - like a horn. Will fill tires with a hose alone - quickly runs to the limit and shuts off between tires.

For plumbing - just about everything you use will utilize US pipe thread connections. For piping runs that are fixed - consider using truck air brake (DOT) parts for tubing. It will have the sort of pressure ratings you want - just keep it protected from exhaust heat and secured in place. For hose connections, get industrial pattern quick-disconnects they are what shops and air tool people use. I've got a long enough hose on my tire filler to reach all from a single location.

To add surge capacity to mine - and make it conveniently removable - I use a surplus aluminum tank on an umbilical. It plugs into the system beside the tire filler port on a separate disconnect and rides loose under the tool box when I have it on there.