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Underskilled
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Discussion Starter · #1 ·
I have read in other threads that you can tune the progression curve of a large rp23 can.

As I am on a WFO and other people probably have this problem I thought this would be of benefit being an open thread, not just private e-mails to Niner.

I currently have an XL WFO, 200 psi and I weigh ~210lb.

This gets me 1/3 sag, and when descending hard rocks smooth perfect seemingly bottomless travel.

I have a couple of problems which i could use advice on.

When cornering hard I occasionally get the back of the bike sinking too far.
When doing even small drops, even BH off a curb on my commute causes the bike to bottom out quite harshly.

I want to make the shock ramp up more steeply to see if that helps.

I have been told you can steepen up the rp23, any idea how to do it, or by how much?

Thanks,

P


p.s. if anyone is thinking of getting a WFO, it is a stunning bike.
 

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does your shock have boost valve, i think thats whats supposed stop that from happening. what about propedal? are you running it.... i think i read some stuff in the suspension boards about adding a small piece of plastic on the inside of the barrel, they also changed the size of the barrel, something i think push industries do, but you can do yourself....
 

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Mi nombre es Austin
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228 Posts
I'm very interested in the W.F.O. I like to ride steep gnar techy stuff and I go OTB almost every ride, is the DHX air a worthy option for this bike or should the rp23 work more effectively?
 

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I have the same problem as described in the first post. I tried the air can shim solution (I linked to it in the other thread) and it helped, although I'm still bottoming out too much. Using ProPedal (and thus hoping the Boost Valve controls the bottoming) caused the initial movement to be too harsh. Therefore, my RP23 is being sent to Push for a re-valve and the bottom out bumper kit. I'm looking forward to this!
 

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Underskilled
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Discussion Starter · #6 ·
mtb_411 said:
I have the same problem as described in the first post. I tried the air can shim solution (I linked to it in the other thread) and it helped, although I'm still bottoming out too much. Using ProPedal (and thus hoping the Boost Valve controls the bottoming) caused the initial movement to be too harsh. Therefore, my RP23 is being sent to Push for a re-valve and the bottom out bumper kit. I'm looking forward to this!
Does anyone have any info on the shim solution?
What shim, where do you get it, what do you do with it?
Has anyone tried a low volume sleve with this?

I have heard the high volue sleeve is dual layer with a small hole allowing access to the expansion chamber, would blocking this hole turn it back to a small volume?

What pressure are people runing the rp23 at I am 210lb at 200psi
 

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CaveGiant said:
Does anyone have any info on the shim solution?
What shim, where do you get it, what do you do with it?
Has anyone tried a low volume sleve with this?

I have heard the high volue sleeve is dual layer with a small hole allowing access to the expansion chamber, would blocking this hole turn it back to a small volume?

What pressure are people runing the rp23 at I am 210lb at 200psi
It's all in here

http://forums.mtbr.com/showthread.php?t=503070
 

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"55 lbs and climbing!"
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1,034 Posts
Hey CG.

I think the small can would be better for this bike if sticking with the RP23. I'm only 170 and would bottom harsh with my WFO just coming off a 1 foot drop. It definately needs more ramp up. This may be a case where the DHXair would come in handy. One could adjust the B/O resistance in the piggy back to fend this off.

I still had my Avy coil shock from my last ride and had it re-tuned for the WFO. WOW...What a difference. The support is much better in the mid stroke and still supple in the begining of the stroke and soft to bottom. Not that this is a cost effective solution for someone who allready has paid for the RP23. I will say that Craig at Avy was not fond of tuning his coil to the low leverage ratio of the Niner CVA format. He's more of a fan of 3:1 ratios and feels that most anything ont the 2.4:1 ratio if gonna feel funky. No matter what he said, he still did a good job adapting my Woodie to the WFO.
 

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Underskilled
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Discussion Starter · #9 ·
I have done the mod and am very impressed.
shoved a bit of plastic in and filled the rest of the space with grease.
I have only been able to give a spin around the carpark but the change was dramatic.
It now pedals like the RIP, fast responsive and accelerates well.
I no longer get a dive on a g-out and it does not bottom.

I am looking forwards to seeing how it performs on the trail.
It is obviously less linear, but that was the aim wasn't it?
 

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"55 lbs and climbing!"
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Seems like your set up would duplicate as if you had the small RP23 can instead. It would be nice to see the linear quality of the large can but with better B/O resistance.

I like my coil but holding my RP23 in one hand and JUST the spring off my Avy in the other, the spring weights more! That doesn't include the shock itself. It's temping to use the RP23 on weight savings alone but the Avy functions so much better with the WFO.
 

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Underskilled
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Discussion Starter · #11 ·
I loved how the RIP rode with a small can, so I was trying to duplicate that.
I unfortunately sawed through the can when dismantling my RIP so could not try that.

When I bought the WFO I hoped it would be a stiffer RIP with a bit more travel, looks like this mod may have done it!
 

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Underskilled
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Discussion Starter · #12 ·
I have had my first chance to give the WFO a proper ride since doing the mod.
The change is significant, I can now stand and pedal (something I really missed).
I can corner hard without the back wallowing.
The bike feels MUCH faster for XC riding.

Due to the weather here I am yet to try anything too hard, so will update when the trails dry out.
 
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