the time has come for me to finally get my onboard air taken of..


i wanna be able to fill car/truck and bike tires, possibly run air tools and definitely run a train horn.

the horn needs 150 psi to operate and im not sure what a air ratchet takes..

would i benefit from buying a train horn kit and adapting it for tools and a chuck?

 

Likely the air horn compressor is a high pressure, low volume device. You'll need to find out what the air requirements (pressure and flow rate) are for the air tools:
- http://www.4crawler.com/4x4/CheapTri...uchAirforTools

 

https://www.yotatech.com/forums/f116...mplete-155162/

I fitted a York OBA system recently. Here it is:

Compressor: Full-sized York off a Volvo (I think, I bought it from a guy who had it in the garage)
Bracket: Adapted from a 22RE A/C bracket, you need a sort of spacer as well
Air lines: 3/8"
Air tank: Air brake tank off a Ford dump truck (note: not a dumpy Ford truck)
Valves switches etc: One-way into the tank, 150psi pressure release valve, drain valve, 90psi on/120psi off

Description:

• York is belt driven off the engine in place of the stock AC pump (you can't install the York like I have with AC)
• pressured air goes down the air line, through the one way valve
• pump has a magnetic clutch that is activated by a relay
• relay is only thrown when:
  a) the day-time runnning lights are ON (always on when engine is running (Canadian spec)
  b) the switch in the engine bay next to the quick disconnect is ON
  c) pressure is below 90psi.
• air tank link to quick disconnect zip-tied near battery
• fills up a 31" tire from ~5 to 35psi in ~30 seconds at 2500rpm

cost estimate

• York compressor...................<$50
• 22RE A/C bracket....................$30
• 25' air hose, cut inot pieces......$15
• NPT fittings............................$50
• air brake tank........................$50
• air filter, pressure valves.........$40
• electrical bits.........................$50
• TOTAL................................~$300 (based on what I actually spent)
• Knowing your compressor pumps out 10X more air and costs less than half of the guys with a Viair....Priceless

more info: https://www.yotatech.com/forums/f116...r-22re-152143/


Here's the measurements on the bracket.




Input & output, blow-off valve (150 psi), and on/off pressure switch (80psi-ON/ 120 OFF)









I secured the bracket to the body of the truck.

 

most basic air tools require around 100 psi. basic as in 1/2in gun, 3/8in ratchet, 3in wizzer, i assume these are the basic air tools you plan to carry.

 

http://www.4x4wire.com/tech/portable_oba/

 

Most air tools require 4CFM@90psi to run. No "regular" compressor I am aware of comes close to that - the "fast" ones are usually in the 2-2.5 CFM range.

Your options to truly run air tools are:
OASIS (basically an electrically driven York)
York
A/C conversion
Warn Powerplant
CO2
GIANT (really, really big) air tank