No oxygen in the nitrogen, (or moisture). Under great pressues the
partial pressure of oxygen makes it highly reactive to rubber seals.
High pressure tires are also filles with nitrogen. However in light
aircraft I have found at least on shop using air in oleos. The say
nitrogen is too expensive as the struts are so leaky. ???

xerxes wrote:
Probably a silly question, but what are the pros and cons of air Vs
Nitrogen filling of the oleo struts. Just how much of a problem would be
the humidity be if they are filled with air. Given the environmental
temperatures would probably never get below freezing
Its for a Cherokee 235. Also pressure Mains at 500psi and nose 300psi..
are these figures reasonably accurate.

Thanks in advance