Outer Limits 4x4 Board

i know they are meant to use nitrogen..
but why???
is there a reason?
also is it possible to set them up as ajustible??

Nitrogen is inert, as well as being dry.
This saves on rusting internals, as well as inconsistency's in pressure.

I'm a bit confused here...

Nitrogen charging of gas shocks seems to be the standard but :

Why nitrogen ? You can get other "dry" inert gases.

Could you explain "inconsistencies in pressure" a bit more ?

Perhaps nitrogen is used because its cheap -I believe its the most abundant gas ?

Any info appreciated.

yeah well thats my question 2!
but it seems pretty cheep...
im thinking of setting up something so i can get them charged at tire shops
(they use nitrogen in tires now)
its only like $10 to do a car tire!!!

Given the availability of the GMC CO2 systems as discussed elsewhere for tire inflation - at least on the surface of it - it would seem an option.

Perhaps the pressure inside shocks is too high for CO2 to work, but as they get #$%^& hot I wouldn't have thought that at the pressures and temps involved there would be an issue.

However I just don't know.....

Won't be the end of the world if no one knows but I am interested.

some pretty good facts here:
http://www.getnitrogen.org/why/index.php
http://www.uigi.com/nitrogen.html
http://www.msgroup.org/forums/mtt/topic ... s=nitrogen


Quick 5 sec google search.... not all the answers are on outerlimits, just most of them

Yeah, ive always wondered why i couldnt pump them up with argon.



Also a bit off topic would it be any advantage to run airshcocks with remote reservoirs? thinking somthing along the lines of more volume so it would be cooler, and take longer to sag.

You could run a remote reservoir on an air shock. You would need to run a rather large hose to compensate for the oil volume being displaced by the shaft.

Glenn
Radflo

By inconsistancies, i mean that if you have moisture in the shock it has the potential when heated to increase the pressure in the actual shock.
With the pressure being high it is not going to change state as quick, but i think the main thing is not rusting the inside of your shock.

+dj_hansen+ wrote:some pretty good facts here:
http://www.getnitrogen.org/why/index.php
http://www.uigi.com/nitrogen.html
http://www.msgroup.org/forums/mtt/topic ... s=nitrogen

Good Info, so to me ( ignoring all the tire specific stuff ) it looks like Nitrogen would be optimal because of its larger molecular size. Assuming the seals in the shocks are specifically designed ( which for good quality shocks is I believe reasonable) - nitrogen leakage over time would be minimized.

For permanently sealed shocks I can see the value as the contained gas volume is relatively small in the first place

I will leave the virtues on Nitrogen in tires to others, but I can't help but agree that the outside of the tire is more subject to abuse than the inside.

But now that I think about it.......

If molecular size is the issue then what about other gases ? If the criteria are

1/ Dry
2/ Inert or unreactive
3/ Large molecular size

why arn't other gaseous compounds used, after all there must be heaps of synthetics etc available that fit the bill ?

Perhaps Nitrogen is just the cheapest solution ?