Outer Limits 4x4 Board

Is this the way to go??

18 inch of travel

about $400 each......

but how does this air mechanism on the side of the pic work????

is it always there? how do u fill em up?
are there other types of air shock that work similar?

any info would be great.




screwy

The canister is a remote resevoir, holds the air etc and keeps the size of the shockie to a minimum for space reasons etc

Screwy_ScrewBall wrote:Is this the way to go??

18 inch of travel

about $400 each......

but how does this air mechanism on the side of the pic work????

is it always there? how do u fill em up?
are there other types of air shock that work similar?

any info would be great.

screwy

i know that M&M engineering have to tool to fill them and tune them.
$400 each? where did you get that price?

i'll take a set at $400ea

N*A*M wrote:i'll take a set at $400ea

me too

but from where???

it'll be nitrogen in the remote canister not air .
air expands when hot, nitrogen does not ,thats why race cars use it in their tyres instead of air!

OME LTR's are very similar.

https://www.expeditionexchange.com/ome/indexshocks.htm

down page


Bazzle

bazzle wrote:OME LTR's are very similar.

https://www.expeditionexchange.com/ome/indexshocks.htm

down page


Bazzle

No they are nothing alike.

With the Fox shock you dont need Springs. They will support the weight of the vehicle.

i think everyone is talking bout 2 different things. the first pic looks like a normal remote cannister fox shock (not an AIR shock), that you would use with a coil

wheres ruff is talking about the fox air shocks (aka swayaway, walker evans) which are a stand alone shock that is designed for the weight of the vehicle

the air shocks are around $500 each, dont know the price on the remote cannister shock, but must be around $400

http://www.outerlimits4x4.com/PHP_Modul ... hp?t=37009


$1750 for a set of 4....

We sell them. The Sway a way (race runner) and fox are quite different in their construction. Working on pricing now. The fox's will hold up a light(ish) vehicle- think rockcrwler or buggy.

King off road racing shocks are also a brand that do coilovers,(not king springs) they are becoming popular in the comp scene

www.kingshocks.com

Fox are now making a 2.5" airshock that can hold a lot more weight than the 2" versions.

Talk to Sean at ABT4x4 about them.

cheers

z

G’day All

Just to add to the info so far in the thread, Ruff & Antts are correct they are different. Airshocks have been a revolution and basically offer the user a lot of performance or bang for your buck . Fox & Swayaway both manufacture quality ‘Airshocks or Airshoxs’ and some people have been asking the differences. There are some differences but in general they operate under the same principles. I will try to give a quick basic comparison: (mainly weight & Shaft size)

• Fox are physically lighter and their shaft is made from alloy DOM, whereas,
• The SwayAway (SAW-racerunner) is heavier as the wall thickness is a lot more because they gun drill it from solid bar stock;

• The Fox shaft size is 1.24in in diameter, whereas;
• The SAW is 1.375in in diameter

So what does this mean in real terms:

• If you change the shaft size you change the oil capacity, which together changes the Nitro Pressure (all other things being equal)

• Therefore because the SAW has a larger shaft it can hold up more weight. Bigger shaft means lower Nitro pressure. Airshocks are considered to operate better under lower Nitro pressure. The draw back of running high pressure is less rebound control because the there is higher spring unload force!!? Operating near the weight thresholds, weight increases cause the spring unload force to significantly & proportionally increase.

The question is this is difference quantifiable, well sort of, it can means under similar conditions the SAW can hold 10-15% more weight. This does not mean the Fox shock can’t hold the same weight but rather it could unload or the shock will try to extend back to ride height with more force (not good for climbing). All in all under certain conditions the SAW will perform more predicable however this is only 1 variable to consider amongst many.

IN SUMMARY: IF WEIGHT is your main concern and you can’t wait for the release of FOX’S new 2.5 airshox, cant afford coilovers or even wait for their next generation of airshox, the SAW is marginally your best bet. Otherwise they both are awesome .

It has been said earlier in the thread, But for those that don’t know Matt at “M&M Custom 4x4â€

do you know when the 2.5" fox airshox are due out?? will they be able to hold much more than the 1000lb of sprung weight on the 2.0 model???

360 scout wrote:it'll be nitrogen in the remote canister not air .
air expands when hot, nitrogen does not ,thats why race cars use it in their tyres instead of air!

WTF?

You've just re-written one of the laws of thermodynamics. The air we breathe, or pump into our tyres, is roughly 80% Nitrogen. Whether your gas mix is 80% Nitrogen or 100% Nitrogen won't affect the way it reacts to increased temperature - the physics involved doesn't care about the mix of the gas, only that it's a gas.

I don't know why race cars use nitrogen in their tyres (possibly lighter than air (but not by much) maybe they want no oxygen?) but it's not because Nitrogen doesn't expand when hot.

If anybody does know why, I'm curious.

Cheers,

Scott

With most gasses they all seem to have a Pressure Temperature Relationship,

Take Nitrogen for instance, It does not, expand with a temperature increase, there fore, the pressure you put in your tyre, will not change, Nitrogen i believe is also lighter than air, from what ihear, nitrogen also keeps tyre temperatures down, thus increasing tyre life the hotter the tyre, the shorter its life,

ozy1 wrote:With most gasses they all seem to have a Pressure Temperature Relationship,

Take Nitrogen for instance, It does not, expand with a temperature increase, there fore, the pressure you put in your tyre, will not change, Nitrogen i believe is also lighter than air, from what ihear, nitrogen also keeps tyre temperatures down, thus increasing tyre life the hotter the tyre, the shorter its life,

Where do you get this from? PV=nRT is a fundamental thermodynamics formula. Pressure x Volume = n x R x Temperature. n is a measure of the number of molecules in the sample of gas, R is a constant, Temperature is measured in Kelvin rather than degrees C or degrees F. If you increase the temperature then either the pressure or the volume (or both) will increase - end of story.

The tyre carcass heats up as the car moves (heat from the bitumen, friction as the tyre slides, flexing of the sidewalls) and the heat transfers to the gas in the tyre - not the other way around.

However, if Nitrogen doesn't absorb heat from the tyre as readily as air then that may be the benefit - if the gas doesn't absorb heat as readily, then maybe pressures don't climb as fast or as far. Or maybe Nitrogen is better at transferring heat to the wheel, and keeping gas temperature down that way? Which is normally hotter on a race car - the wheel (connected to the hub and hence the brake disc) or the tyre?

Wow - this is intriguing (yes, I'm a nerd - I can live with it, so you can too! )

Scott

from: http://www.blackcircles.com/general/technology

Improved comfort of ride
Improved safety
Increased fuel savings
Improved life of tyre
Nitrogen has long been the accepted gas medium for filling aircraft tyres, racing tyres and heavy mining and construction vehicle tyres. Nitrogen is used for safety reasons and to ensure that tyres are always at a constant pressure. Compressed air, the traditional medium for inflating car tyres, contains both oxygen (21%) and nitrogen (78%).
The rubber tyre is like a membrane, through which oxygen permeates three times faster than the nitrogen. The result is that the oxygen slowly leaks out through the rubber walls, and the under-inflation leads to higher tyre wear with a consequent decrease in safety and comfort, and higher fuel costs.

Mytqik wrote:from: http://www.blackcircles.com/general/technology

Improved comfort of ride
Improved safety
Increased fuel savings
Improved life of tyre
Nitrogen has long been the accepted gas medium for filling aircraft tyres, racing tyres and heavy mining and construction vehicle tyres. Nitrogen is used for safety reasons and to ensure that tyres are always at a constant pressure. Compressed air, the traditional medium for inflating car tyres, contains both oxygen (21%) and nitrogen (78%).
The rubber tyre is like a membrane, through which oxygen permeates three times faster than the nitrogen. The result is that the oxygen slowly leaks out through the rubber walls, and the under-inflation leads to higher tyre wear with a consequent decrease in safety and comfort, and higher fuel costs.

Being curious, I did my own search and discovered that Black Circles also sells Nitrogen fills - I wouldn't count them as a reliable source of information on this subject. In fact, there are a lot of sites making the "no change in pressure" claim, and most of them seem to be selling Nitrogen Fills - go figure!

But I did find some links I believe. This Aussie site came near the top of the search:
http://www.btc.net.au/tyrecare/nitrogen.asp

Then there was this site: http://www.tommcmahon.net/2004/11/fill_your_tires.html

While nitrogen is dry and benign and will not combine chemically with other materials (the metal in tire rims, for instance), compressed air contains trace amounts of water and the oxygen tends to combine with other materials, causing rust and corrosion. If you were to see the inner face (the part enclosing and sealing the inside of the tire) of some fancy aluminum wheels you would be surprised at how corroded they become due to oxidation.

This article was interesting and logical:
http://www.aftermarketbusiness.com/afte ... ?id=101650

[quote]Nitrogen remains in the wheel longer, results in better fuel efficiency and is less likely than compressed air to corrode rims and deteriorate tires, according to tire industry professionals.

Coley has spoken with customers who think nitrogen is more flammable than compressed air, but the opposite is true. Nitrogen, in fact, prevents flammable gases from building up inside of the tire, a reason for its use on aircraft and racing cars. “Oxygen is flammable; nitrogen isn’t,â€

thats what i always was the reason for sunning nitrogen instead of air, to stop internal rust from the water

85lux wrote:do you know when the 2.5" fox airshox are due out?? will they be able to hold much more than the 1000lb of sprung weight on the 2.0 model???

For those that wanted to know about the 2.5 fox airshox, this is where it is at. Fox has said they will be ready at the end of the month so if you want some get in early .

Cheers,
Sean Lee
ABT 4x4
+61 2 6291 5994 ph
+61 2 6291 7286 fax
abtmaster@abt4x4.com
www.abt4x4.com – full online purchasing website coming soon!

85lux wrote:do you know when the 2.5" fox airshox are due out?? will they be able to hold much more than the 1000lb of sprung weight on the 2.0 model???

I believe the 2.0 versions were downgraded to 800lbs per shock.
The 2.5 version is rumoured to be double that and handle 1600lbs.

This is all heresay until the official specs come out so just keep bugging Sean and he will set you straight.

cheers

z