Mountain Bike Reviews Forum banner
1 - 20 of 25 Posts

·
Registered
Joined
·
256 Posts
Discussion Starter · #1 · (Edited)
I just finished building up my XC blur, running a 07 fox 100/120/140 talas RLC set at 120mm and a fox RP23. After following Fox's sag/shock setup directions, I feel like the suspension is not as plush as I expected. When I roll off a curb, the front doesn't feel as plush as my previous F100RL, and when the rear rolls off I feel like I'm rolling on a hardtail (rode off the curb while sitting on the saddle).

Front Shock https://www.foxracingshox.com/fox_tech_center/owners_manuals/07/eng/forks/32mm/talas_rlc.htm

- I weigh 165 pounds, so I dialed in 70psi, and adjusted to 25% sag (of 120mm) and ended up with a pressure of 45psi. (on fox's chart you dial in 50psi to 125lb rider), does this seem odd that I got my 25% sag at 45psi? I've also dialed the rebound and compression knobs to the center position of both, and I adjusted lockout force to MAX.

Rear Shock
https://www.foxracingshox.com/fox_tech_center/owners_manuals/07/eng/rear_shocks/float_rp23.htm

- I adjusted the rear shock to get the 25% sag (2 inch travel, to 0.5), the pressure that I got this sag at is 110psi (keep in mind I am 165lbs). I have the rebound set in the center currently as well. I've also noticed from the fox website that to turn on propedal is opposite of their diagram, that when I have the switch set to shrader valve side, that is the propedal setting, and when the switch is set to the opposite side of the valve, its open. I determined this by switching and finding out which of the two settings was more plush, and determined the softer setting was 'open'. Is this correct? Now my question is, how can I make my rear feel more plush, and not feeling like I'm riding a hardtail when riding off a curb (closet thing to test my suspension in front of my place).

*I also gauged how plush my previous float R rear shock was compared to the RP23, it definitely felt more plush in the off the curb test and I liked how it felt in the trails.



Thanks for the help in advance!
 

·
Registered
Joined
·
311 Posts
Set your sag with the low speed compression off and no rebound dampening (both full counter clockwise). Use this guide for your rebound setting that matches your psi (clicks out are from full closed, clockwise). Set LSC 3 clicks clockwise. Lock out blow off 8 clicks from closed.
 

Attachments

·
EDR
Joined
·
10,303 Posts
You're ok...

I've also noticed from the fox website that to turn on propedal is opposite of their diagram, that when I have the switch set to shrader valve side, that is the propedal setting, and when the switch is set to the opposite side of the valve, its open. I determined this by switching and finding out which of the two settings was more plush, and determined the softer setting was 'open'. Is this correct?
Fox changed up the position. The website may still be outdated or you have an older Float (and the website is correct for the newer shocks). I haven't checked it in a long time but when I got my Float back in '08 I know it was different from the online diagram.
 

·
Registered
Joined
·
256 Posts
Discussion Starter · #6 ·
Jacobus said:
Set your sag with the low speed compression off and no rebound dampening (both full counter clockwise). Use this guide for your rebound setting that matches your psi (clicks out are from full closed, clockwise). Set LSC 3 clicks clockwise. Lock out blow off 8 clicks from closed.
ah that's very interesting, where did you get this chart from? i'll try to dial in the front shock with compression off, my talas only has 12 clicks of adjustment as well

do you have a chart similar for the rear?

also does lock out blow off have any relation to normal riding? or is it just really the force it takes for the lockout to buckle
 

·
Registered
Joined
·
256 Posts
Discussion Starter · #7 ·
I also purchased the rear rp23 used, and from the size of the rear eyelet bushing, it didn't look like it came from a 08 BLUR XC.

Does this shock come with some sort of factory tune that is set up optimally for the frame it initially came off of? Can I change it to the correct setting for my blur?
 

·
Registered
Joined
·
256 Posts
Discussion Starter · #8 ·
ok, update, my old stock float r was set at compression level 1 and rebound level 1

the rp23 i picked up used is set at compression 3 and rebound 2...

how would i be able to get the rp23 adjusted to compression 1 and rebound 1?
 

·
Big Gulps, Alright!
Joined
·
3,223 Posts
darnelli said:
ok, update, my old stock float r was set at compression level 1 and rebound level 1

the rp23 i picked up used is set at compression 3 and rebound 2...

how would i be able to get the rp23 adjusted to compression 1 and rebound 1?
Send it to Push. http://www.pushindustries.com
 

·
Registered
Joined
·
12,083 Posts
darnelli said:
I just finished building up my XC blur, running a 07 fox 100/120/140 talas RLC set at 120mm and a fox RP23. After following Fox's sag/shock setup directions, I feel like the suspension is not as plush as I expected. When I roll off a curb, the front doesn't feel as plush as my previous F100RL, and when the rear rolls off I feel like I'm rolling on a hardtail (rode off the curb while sitting on the saddle).

Front Shock https://www.foxracingshox.com/fox_tech_center/owners_manuals/07/eng/forks/32mm/talas_rlc.htm

- I weigh 165 pounds, so I dialed in 70psi, and adjusted to 25% sag (of 120mm) and ended up with a pressure of 45psi. (on fox's chart you dial in 50psi to 125lb rider), does this seem odd that I got my 25% sag at 45psi? I've also dialed the rebound and compression knobs to the center position of both, and I adjusted lockout force to MAX.You set the lockout force to just prevent excessive bob when standing and hammering

Rear Shock
https://www.foxracingshox.com/fox_tech_center/owners_manuals/07/eng/rear_shocks/float_rp23.htm

- I adjusted the rear shock to get the 25% sag (2 inch travel, to 0.5), the pressure that I got this sag at is 110psi (keep in mind I am 165lbs). I have the rebound set in the center currently as well. I've also noticed from the fox website that to turn on propedal is opposite of their diagram, that when I have the switch set to shrader valve side, that is the propedal setting, and when the switch is set to the opposite side of the valve, its open. I determined this by switching and finding out which of the two settings was more plush, and determined the softer setting was 'open'. Is this correct? Now my question is, how can I make my rear feel more plush, and not feeling like I'm riding a hardtail when riding off a curb (closet thing to test my suspension in front of my place).

*I also gauged how plush my previous float R rear shock was compared to the RP23, it definitely felt more plush in the off the curb test and I liked how it felt in the trails.



Thanks for the help in advance!
The Blur needs the shock sag to be set at the correct position in the travel, read what Santa Cruz says...

RP23 has two lever positions on and off.....set the knob to 3 and cycle the shock on the bike it is dead easy to tell which position has pro pedal on or off...

Then set the knob on 2 and repeat...

Then set the knob at 1 it is getting hard to tell which position is on or off
 

·
Registered
Joined
·
256 Posts
Discussion Starter · #12 ·
yea i definitely feel the difference with the propedal settings, just opposite of the diagram

i am now trying to see what i can do with the rp23 with the factory compression set at 3 and the rebound set 2, i've read that for the blur XC, it should be a 1 and 1 for compression/rebound
 

·
Registered
Joined
·
10,033 Posts
first.. you need to just set aside the numbers and the recommendations and sag percentages and all that stuff. just ignore it completely. it got you the initial setup, you need to go from there. the recommendations and percentages get you a rough start.

turn down your compression, try less pressure, leave your shock wide open. id consider selling the RP23 and having the float R pushed, with the propedal disabled.
 

·
Big Gulps, Alright!
Joined
·
3,223 Posts
He can't turn down his compression - the RP23 does not have external compression adjustment. For the record, we are not talking about propedal, so let's set that aside for a moment.

The internal compression/rebound adjustment is set at the factory. Different bike manufacturers specify different tunes for different bikes. The different levels of compression more or less affect how plush the shock will be. This is with propedal on or off. The only way to adjust it is to send it to someone who can take apart the damper and change the tune, like Push or Fox. The rebound tune is a little different, in that it IS externally adjustable. Most riders don't have issues with the rebound tune, some will if they cant set it fast or slow enough. However, if the compression tune is too high for the frame, the shock will feel harsh. The most common reaction is to run more sag, which can help to some extent, but it's really a bandaid fix and will affect bottom out. It'll leave you overdamped and undersprung. I've now dealt with this on two horst link frames with high compression tune RP23s.

The reason SC typically specs low compression tune shocks is because their VPP suspension system is supposed to be relatively efficient and neutral under pedaling. IIRC, it has more anti-squat (meaning it will resist pedal bob) and uses a low leverage ratio. Hence it doesn't need so much compression damping. I've never ridden one, so I'm just repeating what I've heard. I DO know that horst link frames have very little anti-squat and I've owned two that had high compression tune shocks to make them pedal more efficiently. IMO, they're best set up with a lower compression tune - the higher tune made them feel harsh at any air pressure.
 

·
Registered
Joined
·
256 Posts
Discussion Starter · #17 ·
the shocks are both 7.875x2.0'', currently running the float R in my setup and as said thinking about pushing the RP23 or just selling it entirely...even though, it still doesn't feel as plush before i tore it down and rebuilt it with new parts

i have a feeling that the torques for the rear shock may be causing it to not compress as well (90inlb in front 95 inlb in rear), as specified by the santacruz website
 

·
Big Gulps, Alright!
Joined
·
3,223 Posts
darnelli said:
the shocks are both 7.875x2.0'', currently running the float R in my setup and as said thinking about pushing the RP23 or just selling it entirely...even though, it still doesn't feel as plush before i tore it down and rebuilt it with new parts

i have a feeling that the torques for the rear shock may be causing it to not compress as well (90inlb in front 95 inlb in rear), as specified by the santacruz website
It has nothing to do with the torque values on the mounting bolts. It has everything to do with the radically different compression tune.
 

·
Registered
Joined
·
219 Posts
darnelli said:
When I roll off a curb, the front doesn't feel as plush as my previous F100RL
Something you could look into doing is deflating the fork's IFP chamber. That should make it much better for your weight. It'll feel a lot plusher when set to the same sag and you'll use more of its travel during use.
 

·
Registered
Joined
·
256 Posts
Discussion Starter · #20 ·
EmanResu said:
Something you could look into doing is deflating the fork's IFP chamber. That should make it much better for your weight. It'll feel a lot plusher when set to the same sag and you'll use more of its travel during use.
How would I go about deflating the IFP chamber? is this equivalent to dropping air pressure?
 
1 - 20 of 25 Posts
Top