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nitrogen / regulator ???
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Posted by: Rockycr500---------------------
I will be doing My own shock oil changes from now on !
Will a oxy. regulator work for nitrogen ??
Posted by: yardpro---------------------
i was wondering the same thing? I have one and would like to use it. i don't see why it wouldn't work. pressure is pressure.
Posted by: Pantaz---------------------
First thing is, I believe the mounting threads are different. Welding supply houses have nitrogen regulators starting at about $60. This place, <http://www.carverperformance.com/> has valves and tools specifically for shocks.
Posted by: yardpro---------------------
the o2 side is reverse thread, but since you would only be using one side ( the acetylene ) it has normal threads. if the size or pitch is different that should be no problem to adapt.
I think the point of this post was not to have to spent $200.00 + when you may be able to adapt something you altrady have.
Right rocky?
Posted by: Rockycr500---------------------
Yes, Yardpro
You have hit the nail on the head, If I need to spend the money so be it, but what is the most cost effective way to reach My goal( charge My own shocks )
Thanks
Rocky
Posted by: Sage---------------------
I got everything from a welding supply shop for $180, then bought the motion pro charge gauge later. if your not doing a lot of shocks it might be cheaper to run it down to the shop and have it charged?
Posted by: Rockycr500---------------------
I have already bought a Pro Motion shock gauge!
Now if I can cut any corners and get the same results, seems to Me all I need is the regulator and the tank !
I might have both already !
That is the reason for this post.
Posted by: JTT---------------------
Rocky, I use a converted oxygen regulator. Just get the adaptor from a local gas distributor.
Posted by: 02yz125---------------------
BEWARE!!! If your going to use an O2 regulator to service your shock and plan on switching it back to O2 on the welder, use Isopropyl Alcohol to clean it thouroughly! Trust me!! Being in aviation I service O2 all the time. Oil and O2 dont like each other. Even the oil on your hands can be deadly. I thought this was BS until about a month ago at work. Two guys were servicing an aircraft and some oil had gotten in the line (no exact cause determined) and flashed the line right off the plane. This was a stainless braided line that was 3000psi rated and it blew it right the hell up. I kid you not! We even have tools that we set aside solely for changing out bottles and regulators that are all rusty and what not. Those two guys are lucky to be alive. We mandated our servicing procedures be changed and now the O2 cart has its own little parking spot on the opposite side of the hangar from our hydralic servicing equipment. I'm telling you this because its very hard to ride a dirt bike with one arm! By the way whay PSI are those shocks charged too? And if anyone in Dallas wants theirs charged let me know. I have unlimited supply of dry nitrogen as long as the connections are right to hook up to the shock. A procedure would be nice too!
Posted by: yardpro---------------------
02yz125
with the right setup it is to easy.
the shock has a schrader ( i think it's called that) valve just like a tire. the shock takes 150-175 psi (usually). The volume is extermely small.
Posted by: Jeremy Wilkey---------------------
Rocky,
This is a serious thread, but.. I have some humor, and story for you..
My first regulator was a normal say 250 max PSI unit... For a aircompressor... I adapted it to a small Nitrogen botle somehow, and turned the valve open thinking I would not get harmed...
Anyway Amazing I'm alive today to tell this story.. My advice by the right tool, if your worried about spending money, don't service your shock yourself, I imagine your learning curve will cost more than the right tools... So don't risk both your life and your wallet..
Regards,
Jer
Posted by: arossitt---------------------
The factory manuel for my rm250 states if nitrogen is not avaliable to charge the rear shock with good old compressed air that is free from water,what could be more simple.
Posted by: yardpro---------------------
the peoblem of using air is that the expansion coeffecent is different ( air is something like 76% nitrogen, 23%oxygen, 1% other crap). the O2 in the air expands more when heated ( and boy your shock gets hot). also it is flamable and could explode.
Posted by: Jeremy Wilkey---------------------
Yardpro,
We had a string about this a long while back.. We where ****ing a shock oil that we where testing.. I've wondered wheter the shock could have exsploded.. Anyway I doubt it would happen, but its a wild thought..
Regards,
Jer
I mean it will allow somethig to burn, but tis not like it's actually flammable...
Posted by: Jeremy Wilkey---------------------
Hey thats not a bad word..
C o k i n g
Jer
Posted by: yardpro---------------------
did you guys have any problems?
Hope you were joking about air not being flamable. It's not that it allows something to burn, something burning (rapid oxidation) merely provides the threshold amount of energy to ignite the oxygen. O2 is extremely flamable. and with heat,and pressure (or enough of either one of the two) O2 will ignite.
but I doubt it would happen as well.
I was under the assumption that compressed air was a no no due to the expansion when hot. I have been told that it would cause the shock to stiffen ( or lock). Is this not the case?
Posted by: motometal---------------------
no, yardpro, I'm afraid you are off on this one. Oxygen (also air) combines with other elements or compounds in a reaction producing heat and usually expanding gasses. However, in its pure form, it cannot burn regardless of the ammount of heat or pressure. It has to combine with something. Carbon dioxide and nitrogen, the other major components of air, are not flammable.
Posted by: yardpro---------------------
motometal
you're correct. I was thinking that O2 in and of itself was flamable. As you said it it the catalyst ( and essential ) for combustion. combustion is the extremely rapid oxydation of a material, but with it compressed in the shock, since it supports combustion, I believe that's why it is not widely used? although, I could be off base again (stranger things have been known to happen
)
Posted by: motometal---------------------
yes, oxygen can make pure metal burn (such as inside your shock) but before this would ever happen, it would have a very explosive reaction with the oil in the shock.
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