i cant tell you why you need so much pressure, but i stopped looking at the recommended psi a long time ago. I air my shock up and go ride. I tend use the pressure that lets me use all of my travel with about +/-10% left over just in case. If i am way off the 10% mark, i adjust pressure accordingly. Its not very scientific, its just what works for me.
Why does my Float RP23 need so much Air Pressure?
I weigh 185 in riding gear and ride an Intense 6.6. To get 25% sag in the rear and good handling I have to run 250 psi in my Fox Float RP23. At the Intense Bike Manual recommended 185 psi I get more than 50% sag. It's been like this since I got it with the bike about 2 years ago. I recently had the shock Pushed but it didn't change this.
It seems to perform fine at 250 psi (great since I sent it to Push) but does seem to blow through the middle of it's travel (although this is my first float so I don't have anything to compare it to) I don't have problems with it bottoming out though and am pretty happy with its performance.
What could be the cause of this and should I be concerned about it and send it back to Push or should I just continue riding it like I have been?
(PS I have tried a variety of shock pumps and when Push sent it back to me with 185psi in it I got 50% sag when I mounted it, so I know I'm getting an accurate pressure reading)
Thanks in advance for your input.
It seems to perform fine at 250 psi (great since I sent it to Push) but does seem to blow through the middle of it's travel (although this is my first float so I don't have anything to compare it to) I don't have problems with it bottoming out though and am pretty happy with its performance.
What could be the cause of this and should I be concerned about it and send it back to Push or should I just continue riding it like I have been?
(PS I have tried a variety of shock pumps and when Push sent it back to me with 185psi in it I got 50% sag when I mounted it, so I know I'm getting an accurate pressure reading)
Thanks in advance for your input.
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I also had to put a lot of air in my RP23 shock to get to the 25% sag number. It just may be the norm for this shock.
I also had to put a lot of air in my RP23 shock to get to the 25% sag number. It just may be the norm for this shock.
I also had to put a lot of air in my RP23 shock to get to the 25% sag number. It just may be the norm for this shock.
If you had the shock Pushed, then just ask Push about your problem. They'll give you much better information than other people here.Bbbrad said:I recently had the shock Pushed but it didn't change this.
Stupid DB upgrade.
Thanks for the responses. I actually find I generally get much better info on this forum that I do from suppliers who sometimes have a very different agenda to mine. That said, I am contacting Push, I just wanted to see if I could get a bit more info on it before I did.
Interesting to hear that other also have to run high pressure on this shock. My worry is what if someone who weights 225 pounds (future me?) wants to ride the bike. The shock has a limit of 300 psi and I'm already at 250 and weigh only 185.
Interesting to hear that other also have to run high pressure on this shock. My worry is what if someone who weights 225 pounds (future me?) wants to ride the bike. The shock has a limit of 300 psi and I'm already at 250 and weigh only 185.
Sounds like you need to get off of the HV air can and onto the standard can. This is one of the applications where we've gotten mixed reviews on air cans from consumers. We prefer the standard volume for the exact reasons you're describing, but a lot of riders go the other direction.
Anyway, feel free to shoot me an email and I can help you get it sorted.
Darren
[email protected]
Anyway, feel free to shoot me an email and I can help you get it sorted.
Darren
[email protected]
Yup, the HV air can. I have a falling rate suspension design and still have it pumped up way beyond my body weight.
If you need a lot of pressure to get the right sag it has to do with the frame's leverage ratio not the shock.
I had a 2007 SC Nomad w/ both a RP23 / DHX-A that took about 250psi to get proper sag w/ a low volume sleeve. It still suffered from a soft midstroke SC recomended a coil for my 210lb weight - wanted air so I ditched the Nomad for an RFX. I now run my body weight w/o any wallow.
Yeah, the sleeve volume has nothing to do with how much pressure you need. You will need the exact same pressure to achieve the same sag on the same bike with a LV or HV air can. All the sleeve volume does is reduce the ramp up in resistance mid to late stroke. Its makes air shocks feel more linear or makes bikes with a rising linkages rate feel more linear.
Oh, yeah, sorry... I lost sight of the sag issue and was just thinking of the overall spring rate/curve.formulaone33 said:Yeah, the sleeve volume has nothing to do with how much pressure you need. You will need the exact same pressure to achieve the same sag on the same bike with a LV or HV air can.
On my Remedy i can run the recomended pressures to get the proper sag but then I just blow through it's travel... Hence my need for the standard volume can.
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