On Sun, 14 Dec 2014 06:07:45 -0800 (PST), 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

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Hey Gary,

50 foot of hose will have a fair loss. What happens if you use a
shorter hose as a test?

If you can get the 120PSI at the source, and if you are only going to
"top-up" the tires, maybe one of those 20 gallon "air pigs" filled at
the source will give you what you need.

Take care.

Brian Lawson.