Redbaron73 - Perfectly Matched Air on all axles

[redbaron]

drive axle has 4 different psi readings. Even if off by 1 psi, its annoying.

This is even more important with the steer axle.

I finally came up with a solution.

I am using my viaair, specially made manifolds, 300 psi 1/4ID air hose. I can now air all 6 tires at the same time and ensure perfectly matched pressure!

Same setup works on the front axle too, as the chucks I am using are sealed unless connected.

During my test all 6 tires where 80psi. Needed to add 10psi. It took 15 minutes of just waiting for the viair to do its job. Not too shabby.

 

[RKins]

Now, we're going to need a parts list and sourcing info....

 

[redbaron]

the manifolds are the tricky part. I had these custom made. I am going to reduce the manifold count by using 3 of the 4 ways.

I am also looking for a good polyurethane hose that I will cut to fit.

you will need the tools to put ends on the air hoses. All is available on Amazon. I'll get the list together once I get this right.

I was impressed that my viair 450 could handle 6 tires at once.

 

[Neal]

Would the connection to the air tanks work any better if the engine is in high idle?

 

[Neal]

Also have to wonder with HWH Active Air with larger air lines if you could tap into a line for tire inflation.

 

[redbaron]

Using the onboard air is a no go. It allows pressure to drop below 100psi before engaging again.

 

[texskeet]

You wander why the tires have different pressures after they are heated up? It is because they will have different amounts of moisture in each tire . You should use a pressure doubler . The coach air goes through an air dryer. Water vaper expands at a different rate than dry air.