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Sorry if this is a repost..I searched the archives and could not find an answer to my questions-

I just got a Med Blur, with 5th airshock. The first 2 rides were great, then on the 3rd ride it started sounding like air was leaking out- whenever I would hit a rough bump (rock or log), I would hear the sound of air deflating from the rear. Any idea what the problem may be?

Also, the Santa Cruz site says for the IFP- set it at 50-70psi, but the Progressive site says to not set the IFP outside the 75-125psi? What should it be?? I weigh about 135lb.

Thanks..
 

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Also, the Santa Cruz site says for the IFP- set it at 50-70psi, but the Progressive site says to not set the IFP outside the 75-125psi? What should it be?? I weigh about 135lb.


Can't answer your first question, but the 5th Element booklet that came with my Blur also says 50-75, not the higher pressure.

At 135 lbs, I can't immagine you needing to ride with the IFP at 125! The shock would never move!
 

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porterjack said:
Sorry if this is a repost..I searched the archives and could not find an answer to my questions-

I just got a Med Blur, with 5th airshock. The first 2 rides were great, then on the 3rd ride it started sounding like air was leaking out- whenever I would hit a rough bump (rock or log), I would hear the sound of air deflating from the rear. Any idea what the problem may be?

Also, the Santa Cruz site says for the IFP- set it at 50-70psi, but the Progressive site says to not set the IFP outside the 75-125psi? What should it be?? I weigh about 135lb.

Thanks..
Given your weight, your IFP should probably be no higher than 50, especially with the blur which has the VPP. I think the 75-125 is for the other chamber
 

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Progressive site......

May have some answers for you by e/m their question forum, or checking their FAQ/Tech site as well. The link is http://www.progressivesuspension.com Some problems with internal seals, and with the Schrader valve stems have apparently been worked out with the more recent releases of the 5 th Air. Another useful site for setting up the 5 th Air properly may be found at http://www.tftunedshox.com/progressive/setupair.htm Hope some of this helps. You may end up back at the LBS, however. :rolleyes:
 

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I set the IFP at 75 and weight in at 195lbs. to give you a comparison. As for the sound of air leaking out, could it be the sound of cavitation in the damping fluid during rebound. I get this sound every once in a while on my 5th as well as my Fox Fork. It is a whoosh or Squishing sound. You can test by backing out the rebound to see if that influences the sound.
 

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Regarding the minimum IFP setting on the 5th - I contacted Progressive about two months ago and they advised that minimum of 50 is OK for Blur (despite what it says on the sticker on the actual shock) and that they were getting around to making new stickers for the 5th.

I run the minimum of 50 as the VPP takes care of the bobbing anyway.
 

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I weigh the same as you. For some reason, the label on the shock is wrong--you can run the IFP as low as 50psi. After a LOT of screwing around with the settings, I've settled on 55psi for the IFP and 85psi for the main chamber.

As for the air whooshing sound--I really don't get that in the rear. Are you losing any pressure from the chambers after you hear the sound? Could it be that the rebound is set too slow? I'd check those out first. If you're losing air in the chambers (which may be hard to tell because attaching the pump to the valves lowers the chamber pressures--but only by a max of 10psi in the IFP), I'd get the shock checked out.

Good luck.
 

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I had been having trouble getting the sag set right on my medium with the 5th element. I weigh about 190-200 with all my gear. I e-mailed both Progressive and SC about it. No matter what I put in the main chamber, I couldn't get the sag less than 25-30 cm and it sat about 50 of the stroke when I rode on a flat road! SC said to set the main pressure at 120 lbs. Progressive said 135. Both still had sag at 25-30 cm, too much. I thought 150 was the max for the main chamber for some reason. Took it back to my lbs (Westlake Cyclery in Thousand Oaks) and they put in 180 lbs. Now, 5-8 cm sag--probably not enough, but at least it is less than the 25-30 I kept getting. My lbs said the main could hold 300 lbs. I haven't ridden it yet at that setting, but it will be interesting to see what happens. It appears that both SC and Progressive are off on their numbers--that or I have a faulty shock!
 

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Here is how I set my sag, first you set the IFP (that is a matter of preference, higher for no-bob, lower for a little bob , higher sensitivity for smaller bumps) I have mine set at 70 psi and I weigh 165 with gear. Remember you must always do this first whenever you adjust your pressures. Now set your main chamber pressure, start by using the the charts pressure for your weight. Now go ride the bike and hit some bumps, then ride on a smooth surface (road) and reach down and move the shock marker (rubber band) all the way up to the shock. Now very gently stop and get off the bike. If it is too much enough sag, increase the main chamber pressure until you get, if it is not enough sag increase the main chamber pressure. When doing this remember to always start out by setting the IFP pressure first, even if it is the same. It is a pain but once you have your pressures, write them down or memorize them and you are all set.
RIDE ON,
Scotto
 

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I'm about 200lbs in gear and I run 120psi main, 50-60 in the IFP.. Works out good.
 
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