MicroLevel New Lower price!

Keith V said:
Som I've lowered the price of MicroLevel.
It's now only $499 vs $695
This is the control panel, height sensors/wire harness, remote control.
Valves, Compressor, Tank, Airline sold separately
Click to expand...
OK, you've got my attention. What do I need for a '73 upgrade to your system? I have the Firestone compressor and some kind of air tank (I should test it to see if it is involved in my slow leak issue). I still have the OEM bag system. At the bags I've added cutoff valves with Schrader fill valves. I still have the original big round control knobs on the dash.... :)

My next project was going to be either a steering column update, Ramco power mirrors, or your system. Good timing!
 
Last edited:
Luther
You'll need a valve kit, this is my current recommendation as it come with fittings.

I also recommend running new air lines as these coaches are OLD! You only need 1 line from the valve block to each air bag, and 1 line from the tank to the valve block

Other than that, assuming or air system works, you should be good to go.

Instructions n stuff are in the forum resources here:
Resource icon Keith V

Microlevel Docs

Use and installation Docs
 
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I mounted mine to the radiator support.
The only real consideration is that exhaust port is pointing down, so any debris or moisture get blown out
 
I was hoping to mount it farther to the rear to shorten the left/right lines and have only one long line front to rear as I'm replacing all lines.... 😖 Oh well... I guess it is easier to access if mounted up front.:)
 
LQQKatJon said:
Horse a piece…. Longer air lines means a shorter wiring. Shorter air lines means longed wiring. Airlines are not crazy expensive.
Click to expand...
I would keep the airlines as short as possible for faster fill & discharge of air from the bags. Wiring is easier to run compared to airlines.
Just my ex-farmboy shade-tree mechanic way of seeing things.
 
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seriously though, the limiting factor of airflow is not the airlines, it's the compressor.
Run them however it's convenient.
I ran 3/8" lines on mine as an experiment, on my 5hp 60 gallon shop compressor, the difference was pretty small. I have a post about it somewhere. But on a Viair 480? you'll never see the difference.
 
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Tybalt39 said:
True, but I'm used to wiring. Air is new to me. :LOL:
Click to expand...
Ummm...what exactly have you been breathing this whole time?!

Air is as natural as it gets. Your first 'science' experiments involved air - holding your breath as a baby until Mom caved in to whatever you wanted, blowing up and popping balloons, etc. You're an air natural so don't be a feared!
 
RF_Burns said:
I would keep the airlines as short as possible for faster fill & discharge of air from the bags. Wiring is easier to run compared to airlines.
Just my ex-farmboy shade-tree mechanic way of seeing things.
Click to expand...
I question the first sentence, agree with the second and have never known what to think about the third. 😜
 
Keith V said:
seriously though, the limiting factor of airflow is not the airlines, it's the compressor.
Run them however it's convenient.
I ran 3/8" lines on mine as an experiment, on my 5hp 60 gallon shop compressor, the difference was pretty small. I have a post about it somewhere. But on a Viair 480? you'll never see the difference.
Click to expand...
The solenoid manifold for the MicroLevel has two 1/4" NPT ports for IN & OUT on the bottom and four 1/8" NPT ports on the side for the airbags and includes 1/8" NPT stainless steel fittings for same.

The 1/8" NPT fittings are for 1/8" air line. That seemed too small to me so I picked up some 1/8" NPT to 1/4" air line fittings so all the air lines would be 1/4".

Would 1/8" air lines be too restrictive or it wouldn't matter?
 
Richard RV said:
I question the first sentence, agree with the second and have never known what to think about the third. 😜
Click to expand...
From AI, so this could be all BS, but it jives with my Ex-farmboy shade tree mechanic way of seeing things.

Flow rate is inversely proportional to the length of the air line, meaning that doubling the length of the pipe roughly halves the flow rate, while cutting the length in half can double the flow. This relationship occurs because a longer pipe increases the total frictional resistance against the air, resulting in a greater pressure drop along the line.

The physics behind this phenomenon involves the cumulative friction between the air molecules and the inner walls of the tubing over the entire distance. According to fluid dynamics principles for compressible fluids, the pressure drop is directly related to the length of the tubing, which in turn restricts the volumetric flow rate for a given pressure differential.

  • Pressure Drop: Longer pipes cause a more significant loss of pressure from the source to the outlet, reducing the force available to drive the air.
  • Flow Rate Reduction: As length increases, the system's ability to move a specific volume of air decreases unless the inlet pressure is significantly increased to compensate.
  • Compensation: To maintain the same flow rate in a longer line, the compressor must operate at a much higher pressure to overcome the increased frictional losses.
 
Richard RV said:
The solenoid manifold for the MicroLevel has two 1/4" NPT ports for IN & OUT on the bottom and four 1/8" NPT ports on the side for the airbags and includes 1/8" NPT stainless steel fittings for same.

The 1/8" NPT fittings are for 1/8" air line. That seemed too small to me so I picked up some 1/8" NPT to 1/4" air line fittings so all the air lines would be 1/4".

Would 1/8" air lines be too restrictive or it wouldn't matter?
Click to expand...
This article will likely answer your questions:
www.vmacair.com

Why Does Air Hose Size Affect My Compressor Airflow? | VMAC

If you're investing in an air compressor, your components should be properly sized. Find out why air hose size matters!
www.vmacair.com www.vmacair.com
 
Richard RV said:
The solenoid manifold for the MicroLevel has two 1/4" NPT ports for IN & OUT on the bottom and four 1/8" NPT ports on the side for the airbags and includes 1/8" NPT stainless steel fittings for same.

The 1/8" NPT fittings are for 1/8" air line. That seemed too small to me so I picked up some 1/8" NPT to 1/4" air line fittings so all the air lines would be 1/4".

Would 1/8" air lines be too restrictive or it wouldn't matter?
Click to expand...
close, BUTT... there are 2 1/8 NPT ports and 6 1/4 NPT ports. The 1/4npt ports, labeled 1 and 2 should go to the bags, the 1/8NPT should be plugged, unless you are running pressure sensors of some sort ( IDK why you'd do that )
The top IN port, based on mounting, should go to a check valve then to the air tank. The bottom IN port should be plugged.
The top EXH port should be plugged and the bottom should have a filter on it.

The valve can be mounted in any position, BUTT, the preferred orientation is connector up, or down, so the exhaust blows any moisture / debris out onto the ground

despite what I said above 1/8 is way too small and WILL restrict your air flow. I'd run 1/4 inch lines, and thats what fittings are supplied with the valves.

Yes, I know how I spelled butt
 
RF_Burns said:
This article will likely answer your questions:
www.vmacair.com

Why Does Air Hose Size Affect My Compressor Airflow? | VMAC

If you're investing in an air compressor, your components should be properly sized. Find out why air hose size matters!
www.vmacair.com www.vmacair.com
Click to expand...
That article is disappointing. The worst offence is this line: "As a result, your compressor is working harder and is using more power than it should to keep up with your air demand,"

no. thats backwards. if your air line is restrictive, your air tool will use less air, so the compressor will have to supply less air, which means it will have to work less hard.

but, as stated, the tool will get less air
 
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Keith V said:
close, BUTT... there are 2 1/8 NPT ports and 6 1/4 NPT ports. The 1/4npt ports, labeled 1 and 2 should go to the bags, the 1/8NPT should be plugged, unless you are running pressure sensors of some sort ( IDK why you'd do that )
The top IN port, based on mounting, should go to a check valve then to the air tank. The bottom IN port should be plugged.
The top EXH port should be plugged and the bottom should have a filter on it.

The valve can be mounted in any position, BUTT, the preferred orientation is connector up, or down, so the exhaust blows any moisture / debris out onto the ground

despite what I said above 1/8 is way too small and WILL restrict your air flow. I'd run 1/4 inch lines, and thats what fittings are supplied with the valves.

Yes, I know how I spelled butt
Click to expand...
Okay. I just verified the port sizes. I had only removed the plugs on the right side - those are 1/8", and I assumed the manifold was symmetrical. My apologies.

There were no fittings of any size included with the MicroLevel. The only fittings came with the manifold, which is what prompted my question about the 1/8" air line.
IMG_7410.webp
 
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