On Thu, 18 Dec 2014 22:02:20 -0600, Martin Eastburn
wrote:

On 12/16/2014 9:53 PM, Larry Jaques wrote:
On Mon, 15 Dec 2014 21:49:54 -0600, Martin Eastburn
wrote:

On 12/15/2014 9:18 AM, Larry Jaques wrote:
On Sun, 14 Dec 2014 20:19:48 -0600, Martin Eastburn
wrote:

On 12/14/2014 8:07 AM, wrote:
Trucks, Freightliner, Volvo, Kenworth, etc, normally have air system
set @120psi or so.

I've found the highest I can inflate the tires using the truck
air system & a 50' hose is 97-98psi.

Need a bit more. Looking for 115psi on the steers(cold) & 105psi on
the drives.

Was wondering if an air powered booster pump would be possible?

Say, 50% of the airstream as high-pressure supply, and the rest to
drive the booster?

If not practical, any easier/better way?

thanks

gary

A long hose with small center hole is a high resistance.
If you have joint leaks, the pressure will drop before you
get to use it. You are dropping (maybe ) 20 PSI in the hose.
Try a larger ID hose with fewer connections.

Martin, the resistance in the hose is only during full flow.
Give it 5 seconds and the full pressure hits the far end.
It's the law!


Does the pump put out 120 really ?

Good question. Gauge error?

If there is flow the restriction will drop pressure.

HIGH flow. How much flow is going to happen between 90 and 105psi,
though? Some, but low. There should be very little pressure drop.

If there are no connectors or If the connectors are 'air tight'.
They are likely leaking on both ends and in the middle if there is one.

Not 20 or more psi-worth, I wouldn't think.


A local tank on the end would be best - have the long hose fill it and
then start to use it from the local tank - as it refills but the tank
supplies the inrush flows and the big squirts setting the connector onto
the valve.

sigh OK, I'll reluctantly give you that one. Local tank = good.

--
With every experience, you alone are painting your
own canvas, thought by thought, choice by choice.
-- Oprah Winfrey