TheBiggestPicture

Oh I'm sorry, I just tried, its fine just removing main air pressure really. If its on the bike, you have enough leverage on the rear, and handlebars in front, to work the suspension. Still lots of springing in there, but you can get an idea. Doesnt work with shocks on the bench as I did before though, too much stiction and springing, have to remove barrels and piggyback pressure then.

lol read my reply to first comment.

What they are doing is like telling the girl you want to get with that she's fat: oh yea! you got her attention now! but its not like you can take it back and say 'haha i was just kidding', its OUT there and she's never gonna get with you. This kind of sensation whoring is like Paris hilton or Lindsey lohan or Geert Wilders, its like a little child who resorts to the negative attention of throwing tantrums, just because it wants attention and cant get enough in a positive way. Plain pathetic.

That's not good, that would be NORMAL. Releasing products that are actually not ready to be released is just BAD! Which unfortunately happens all too often..

Actually the internal friction (viscosity) of gases hardly changes with pressure at all; air only 5% more at 1000psi than at 15psi. Wikipedia on viscosity in gases: "So an increase in density due to an increase in pressure doesn't result in any change in viscosity". However changes in temperature cause significant changes in viscosity; easily 12% for 50 degrees. Furthermore the compression and the expansion of air in an air spring are approximately adiabatic, the air cools down on expansion almost as much as it heats up during compression. There are small losses due to internal friction and due to heat exchange with the container though. The heat generated in the air spring is completely negligible compared to the heat dissipated in the damper. Almost all heat buildup in the air spring comes from heat exchange with the damper parts. Which makes perfect sense: you dont use a spring to dissipate energy, then it wouldnt spring!, the damper is there to dissipate kinetic energy into heat. "square inches of volume"? ;) I though area was inches squared? Only the pressure on the cross sectional area of the piston matters. So it doesnt need 2.8 times more pressure, it needs the product of pressure and piston area to be 2.8 times more, to get the same force as the front; psi*A=force.

Also super excited for DVO's products, their tunability approach, and CG!! If you make coil sprung versions of your usd forks, I guarantee you, I WILL buy them DVO, shocks as well!

Ye I did too, pretty lame. A bladder literally has NO stiction, whereas an IFP has massive stiction detracting from damping performances. I also recon it should last at least as long as the o-ring on IFP's. Think about drive belts and all their applications, they fatigue so slowly, and only because they dry out; which they dont in an oil bath. And, I doubt it, but if cavitation could be reduced if the IFP moved faster (less stiction, less friction, lower mass), a bladder would be the solutiont: no stiction, éven lower friction (just viscosity of the rubber really) and probably less mass too. Furthermore a bladder thermally insulates the air from the oil and from the barrel, so the shock is less affected by heat buildup (the air also cools down slower, but that heat didnt get in there in the first place). I never gave it much thought but wtf.. could someone tell us why not all shocks run a bladder? Sealing is super easy too.

hahaha tabletop84 that article you linked was great

Oh and if you cant control secondary pressures, e.g. fox float stuff, you cant even remotely approximate pure damping, nor pure springing, cus they have a separate, fixed, chamber filled with air (nitrogen actually) that is influencing damping and acting as a light spring at the same time.

Haha wth are you on about wakaba. Lets be clear: a shock absorber is a unit/system that consists of a damping element combined with a springing element. Damper dissipates kinetic energy to heat. Spring stores and releases kinetic energy. So the airshock consists of a damper/dashpot AND an air spring. Air chambers sure as hell store energy and act like a bloody spring when compressed! How else could the bike come up again? How else could you even ride it? "negative suspension movement/rider movement"? Wth is that? Have you never blown up a balloon? Squeezed a balloon? Pulled or pushed on a syringe? Tried to manually turn over a combustion engine (i.e. kickstart)? Ridden air suspension? With compression and rebound all the way open (no piggyback pressure)? Have you ever felt damping? Removed the coil and moved the suspension? Go do it now please. If you only have air suspension you would have to remove the air chamber barrels/sleeves and remove all piggyback pressure and hold the piggy valve open, for the shock. For fork you'd have to remove the complete unit from one leg and and remove all pressure and hold the valve open, on the other. Furthermore the rate of a coilspring is not perfectly linear anymore as soon as the diameter of windings or spacing of windings changes. Go look at the springs in your fork and car now please. There is a massive aftermarket for all kinds of springs for cars; linear, progressive, dual rate. Also in cars there is often support springs, which also make the overall rate non-linear. Air suspension generally combines multiple inherently progressive air springs (separate chambers) to create an overall more linear rate.