120v/240v compressor plumbed into DP air system

[ElvistheKing]

Air tools, everyone knows that are at least 256% cooler than electric tools, but having lug around a portable compressor with sufficient reservoir is a pain and to fire up the engine to use the onboard system is not only noisy but also not good for the engine to idle without being taken on a good run and you still need to bugger around tricking the governor if you want to pump your steer tyres to 120psi.

We have perfectly good set of reservoirs already bolted under the coach, why can't we use them?

Has anyone plumbed in an AC (Alternating Current not Air Conditioning) compressor to air up their RV's air system, with appropriate check valves of course?

[barmcd]

You're coach's air system cannot have any moisture in it because it operates the brakes. Plumbing another compressor into that system would tax your air dryer. I'm not saying it can't be done, but you'd have to figure out what the reduced service interval should be to make sure you are removing the the moisture from the brake system air. The service kit for a Haladex Pure Air Plus cost upwards of $150 so there would be significant cost involved. A failed Haladex dryer can stop you dead in your tracks as it has a tendency to lock up the brakes and can be a bear to clean and repair. I'd say it's not worth the effort.

[twinboat]

If you tap in before the air dryer, it will still purge at 125 PSI and your AC compressor air, will just blow out the open purge valve until the pressure dropped to 90 PSI again. I suppose you could run less then 120 PSI and it won't purge, but then the moisture builds up in the dryer and some could get thru.

If you tap in after the dryer you would need a moisture remover for your compressor. Body shops use them all the time.

Place a safety check valve at the point where you tie in. That way, if your added plumbing or compressor fails, you won't have tank pressure backfeeding and leaking.

There was a time, in the 70s, when air dryers weren't invented. The driver drained his wet tank every night. You could hook it up without a dryer and do that, after running your cool air tools.

[ElvistheKing]

Yer I was thinking to run a moisture filter after the compressor, they are pretty cheap.

[RVNewbie55]

I carry a 20 lb bottle of CO-2. I use it to top off all my tires, and it will handle any air tool. Easy to store also.

[ElvistheKing]

I carry 50L of gas at 200bar but the regs don't supply enough CFM to run stuff satisfactorily.

[gatorcq]

We have members that have plumbed into the release valve of the air cylinder, with a standard pancake compressor and dove 100 miles to a shop to get the air dryer fixed.

[ElvistheKing]

Also CO2 is nasty stuff I don't want to be working somewhere tight using a tool that's pumping out litres of that stuff, CO2 headaches are horrible.

[Jim28730]

Small, lightweight, and you can store it anywhere. 150psi all day long. lLove this bad boy

https://www.google.com/url?sa=t&rct=...0h-fs2q6Y6UuJg

[ElvistheKing]

Originally Posted by Jim28730

Small, lightweight, and you can store it anywhere. 150psi all day long. lLove this bad boy

https://www.google.com/url?sa=t&rct=...0h-fs2q6Y6UuJg

150 PSI All day long until you connect an air tool, from the link "2.3CFM Free Flow @ 0 PSI"

CFM REQUIREMENTS FOR AIR TOOLS

[RVNewbie55]

Originally Posted by ElvistheKing

I carry 50L of gas at 200bar but the regs don't supply enough CFM to run stuff satisfactorily.

Originally Posted by ElvistheKing

Also CO2 is nasty stuff I don't want to be working somewhere tight using a tool that's pumping out litres of that stuff, CO2 headaches are horrible.

Many in the off-road community including myself have used CO-2 for many years. A decent regulator is adjustable from 0-250 psi. Airs tires up faster than any 12 volt compressor.Will also run any pneumatic tool with ease. The only downside is it is hard to tell when you are getting low. I use a regular bathroom scale to know the empty tank weight and then. after filling with 20 lbs of CO-2 it is easy to calculate how much is left. Filling the tank at any welding shop runs around $22.00. CO-2 is Carbon Dioxide, so to the poster in the UK if you were to inhale it I'm sure you would get a headache. I would never use it in a very confined space. On the other hand I suppose you could use it to put out certain types of fires as Carbon Dioxide robs the oxygen from the flame...

[ElvistheKing]

Scuba regulators are not (easily) adjustable.......

[RVNewbie55]

Originally Posted by ElvistheKing

Scuba regulators are not (easily) adjustable.......

Don't know about Scuba stuff but you can't get much easier to adjust than this.

https://smile.amazon.com/Viair-90150...tank+regulator

And for under $30.00

[dmurdock]

https://youtu.be/_62Sc1ghnxI

What I did..