on board air

[jaluhn83]

http://www.buzzardgulch.com/CatalogV2.htm

PN NCPD-1006.

Puma brand, not sure where it's made but it's not the cheap chinese junk. Good for 3.5 CFM and will make 125 psi. $259, and sometimes you'll see them for $30 or so off and if you're lucky free shipping. I've had one for several years and it's worked very well. Should be strong enough to run some air tools, and it's more than enough for a blow gun & inflating tires. I was going to hard mount it with a bigger tank but instead I just keep it in the toolbox.

 

[riotwarrior]

OK guys....this ON board AIR topic does come up somewhat frequently and every single time I post this link....

You can fab a plate up something like this one and get a custom pulley

http://broncoair.com/onBoardAir.php

I think this is one of the best options IMHO

Al

 

[93cc7.3]

OK guys....this ON board AIR topic does come up somewhat frequently and every single time I post this link....

You can fab a plate up something like this one and get a custom pulley

http://broncoair.com/onBoardAir.php

I think this is one of the best options IMHO

Al

You are right ive been tossing around the idea of running my york/oasis off the engine ditching the eletronics but i havent had time to look into fabbing a mount for the cummins

 

[79jasper]

Its gonna be tight to fit the compressor next to my AC but its doable. As for my rear axel, I'm going to use bags of an older kw that fit in between the spring and frame almost perfect. I've got the ride adjuster off an old Pete along with a few other things (used to work at a big truck salvage yard) i

Nice. I think RLDSL has his setup like that.
(If I read right)

 

[jaluhn83]

Here's why I dislike the engine driven OBA setup:

1) Mounting issues - need brackets, pullies, etc, plus finding space in an already crowded engine compartment. Certainly do able, but significant work/money.

2) Parasitic losses - more friction = more fuel consumed

3) If the compressor fails for some reason it's now a major problem cause it's on your engine. V-belt could be taken off, but with a serpentine you're sol unless you have the right belt to bypass it.

4) Not portable.

5) York conversion issues. IIRC yorks used for OBA have a habit of making very oily air since they're designed to circulate oil in the refrigerant. I believe there's a port you can plug to help, but still, it's not designed as a compressor.

In contrast, the portable 12 volt unit does not have any of these issues, and some advantages. About the only down side is that you don't get as much flow. But for most things you're use OBA for (tires, air bags, etc) it's sufficient.

Just my $0.02 though. I was a long time advocate of engine driven OBA but eventually I realized that the 12 volt setup just makes more sense.

 

[smokin150]

Here's why I dislike the engine driven OBA setup:

1) Mounting issues - need brackets, pullies, etc, plus finding space in an already crowded engine compartment. Certainly do able, but significant work/money.

2) Parasitic losses - more friction = more fuel consumed

3) If the compressor fails for some reason it's now a major problem cause it's on your engine. V-belt could be taken off, but with a serpentine you're sol unless you have the right belt to bypass it.

4) Not portable.

5) York conversion issues. IIRC yorks used for OBA have a habit of making very oily air since they're designed to circulate oil in the refrigerant. I believe there's a port you can plug to help, but still, it's not designed as a compressor.

In contrast, the portable 12 volt unit does not have any of these issues, and some advantages. About the only down side is that you don't get as much flow. But for most things you're use OBA for (tires, air bags, etc) it's sufficient.

Just my $0.02 though. I was a long time advocate of engine driven OBA but eventually I realized that the 12 volt setup just makes more sense.

For bags nd tires, yea a little 12v jobbie will do the trick, but I guess it boils down to preference. As I'm going to air assist brakes I need a constant duty compressor to handle the load, I'm planning on keeping my v belt setup cause I trust it more than serp. Call me old fasioned . Good points tho

 

[93cc7.3]

Any 12 volt device can be considered a load because it draws your alt down... smokin 150 id like to hear about this air assit brake idea

 

[jaluhn83]

Any 12 volt device can be considered a load because it draws your alt down... smokin 150 id like to hear about this air assit brake idea

Oh, very true. But you can control it much easier. Even with a blow off valve on a engine driven compressor you still lose the power to turn it, unless you put some sort of a clutch on there. Maybe not much power, but having in there all the time when you only actually need it running 1% of the time, maybe??

For air assist brakes I can see the logic. But most of the time folks running OBA don't need anything like the duty cycle or flow of the york.

 

[93cc7.3]

Ya all edcs need a clutch on them just like a regualar ac pump so ya youll still be spinning a pulley but not too much loss its also recommened to only have the clutch engauged under 2000rpms or at idle thats when you would be using the air mostly anyhow

 

[smokin150]

Any 12 volt device can be considered a load because it draws your alt down... smokin 150 id like to hear about this air assit brake idea

Basicly I'm taking an air brake system and modifying it to be used in conjunction with the stock hydraulic brakes... kinda how hydro boost works just with air instead of oil

 

[93cc7.3]

Very cool

 

[Dave 001]

Puma brand, not sure where it's made but it's not the cheap chinese junk.

Puma is Chinese but not Chinese junk. They are not top of the line but not junk. I have a couple Puma air tools that I bought because at the time I could not afford the top of the line stuff. They are holding up just fine.....not Ingersoll-Rand but much better than Harbor Freight. I'd say equal to Craftsman.

 

[1466IH]

When you start putting your air assist on you should start a new thread with how you are doing it. I think that there would be a lot of people interested in how you do it. Everyone knows the brakes on these things arent that good. I already have a compressor on my truck. It is a belt driven bendix comp off of a big truck. I turned the regulator up and have it plumbed into an 80gal tank in the bed. I use it for air tools. The mount was pretty simple because my truck doesnt have a/c. When i put my new engine in it had the a/c comp on it so i removed the comp and modified the mounts. I will post pics as soon as i can

 

[Dave 001]

http://www.buzzardgulch.com/CatalogV2.htm

PN NCPD-1006.

jaluhn83, which page? Thanks.

 

[bike-maker]

Antone have experience with converting the stock Ford AC pump to an air compressor? Would be the cheapest way to go for those of us with dysfunctional AC systems.