[big.griff1]

I have a 2021 Reverb C1 with the vent valve. Recently developed the reverb squish or sag. Did the vent valve procedure and it seemed to fix it. Couple rides later and it’s back. Is it time for a full service or keep trying the vent valve trick?

 

[Cary]

If it were me, I would just replace it. By the time you pay the service cost, it isn’t much more for something like a PNW, which is far more reliable, not to mention easier and cheaper to maintain.

 

[Shark]

Is it under warranty? If so, have them fix it, then sell it.

Sent from my SM-G991U using Tapatalk

 

[Brad]

how many hours on it?

 

[ruffian]

If it sags more than 10mm it needs a rebuild. Vent valve won't work as you've found out. If its newish Sram will warranty it and then sell it.

 

[big.griff1]

It’s still under warranty I think, under a year old… I thought the vent valve was supposed to be the remedy to sagging issue.

 

[ruffian]

It’s still under warranty I think, under a year old… I thought the vent valve was supposed to be the remedy to sagging issue.

I though so too. After talking with a Sram tech I was told it won't fix a 10mm or more squish.

 

[Brad]

10mm sag sounds like there’s a problem internally that will likely require some new parts. Is the return speed unaffected?

 

[big.griff1]

Return speed seems fine on mine and I definitely have more than 10mm squish,
closer to an inch I’d say.

 

[Brad]

sounds like oil is bypassing the check valve so that means a rebuild. If return speed is still normal then the air spring is still functionning.
When you purge it via the purge valve are you repeating the process and applying as much pressure to it as possible?

 

[big.griff1]

sounds like oil is bypassing the check valve so that means a rebuild. If return speed is still normal then the air spring is still functionning.
When you purge it via the purge valve are you repeating the process and applying as much pressure to it as possible?

It only takes one time with the vent valve to get rid of the squish for me. And ya I think I’m putting as much pressure as possible…

 

[justin70]

If you can get a warranty replacement, then sell that assuming it's new in box you'll get a great price, then buy a bike yoke revive, or a PNW to save some cash, those would be my optimal outcomes.