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Do 888rc2x's have shimmed rebound and compression

D

dilzy

Monkey
Sep 7, 2008
567
1
Okay, I've sort of organized a swap with a bloke for his 07 888rc2xwc with my 07' boxxer team.

I am only going this way purely from a stiffness point, as I weigh about 105kg (230lb) and frankly the boxxers skip around a bit too much. I do really like the ability of the boxxers to run a lot of lsc and still blow off easily.

I want to know if the 888 has a shimmed rebound and compression assemby (moto cartridge?) and if you can run a large amount of lsc on them without it spiking.
 
S

Steve M

Turbo Monkey
Mar 3, 2007
1,991
45
Whistler
Yeah all the Marz stuff has been shimmed for ages, but the problem is that you can't open the carts up to re-shim it. Haven't spent enough time on em to know how good the HS threshold is though.
 
O

Old_Sckool

Monkey
Jun 5, 2007
187
0
Socket said:
Yeah all the Marz stuff has been shimmed for ages, but the problem is that you can't open the carts up to re-shim it. Haven't spent enough time on em to know how good the HS threshold is though.
Click to expand...
Does that include the older HSCV cartridges? Just curious. Never really opened one. Thought I heard they used a ball and spring to relieve excess pressure.
 
Avy Rider

Avy Rider

Monkey
Feb 26, 2003
287
0
Muskoka,Canada
Just a heads up that Craig at Avalanche is working on cartridges for several major forks including the 888's so you will be able to have incredible performance and improved reliability. He's going to be testing prototypes for the next 6 or so months before making them available.

I'm hoping to rock some myself. I rode his DHF 8 forks for a few years and they were incredible but too heavy for my style of riding. This is the perfect solution for those wanting the proven Avalanche suspension tuning without the added weight.
 
Jm_

Jm_

sled dog's bollocks
Jan 14, 2002
18,993
9,649
AK
Old_Sckool said:
Does that include the older HSCV cartridges? Just curious. Never really opened one. Thought I heard they used a ball and spring to relieve excess pressure.
Click to expand...
I sawed one in half. The rebound-bleed-piston is on the moving shaft, the compression piston is in the bottom of the cartridge and it's stationary, but the action of the fork compressing forces fluid through it. The compression piston has shims on the compression side, and on the backside it is shimmed for high speed rebound. The thing though is that the HSCV/marzocchi cartridge damper from the old days is VERY crude and basic. They may have nailed the high speed regime, but the LSC control consists of holes drilled in the bottom of the cart. Again, very crude and simple. Even if you could open up the cart, you couldn't reshim it, the shims are held in place by a rivet. It worked, but there is far better stuff out there these days from all the fork manufacturers, including marzocchi.

I have RC2 and RC3, I'd say the RC3 has a much better option to run a lot of LSC without spiking, that said I have turned up the compression quite a bit with my RC2 and it wasn't too bad. I was compensating that day for not having an air-pump and I didn't want to bottom my fork (coil spring+air combo on 170mm 66), but I'd say the RC3 is a good step above.
 
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scottishmark

scottishmark

Turbo Monkey
May 20, 2002
2,121
22
Somewhere dark, cold & wet....
Avy Rider said:
Just a heads up that Craig at Avalanche is working on cartridges for several major forks including the 888's so you will be able to have incredible performance and improved reliability. He's going to be testing prototypes for the next 6 or so months before making them available.
Click to expand...

that just gave me a bit of a semi! My name is sooooo on that waiting list!
 
Kanye West

Kanye West

220# bag of hacktastic
Aug 31, 2006
3,741
473
Jm_ said:
I sawed one in half. The rebound-bleed-piston is on the moving shaft, the compression piston is in the bottom of the cartridge and it's stationary, but the action of the fork compressing forces fluid through it. The compression piston has shims on the compression side, and on the backside it is shimmed for high speed rebound. The thing though is that the HSCV/marzocchi cartridge damper from the old days is VERY crude and basic. They may have nailed the high speed regime, but the LSC control consists of holes drilled in the bottom of the cart. Again, very crude and simple. Even if you could open up the cart, you couldn't reshim it, the shims are held in place by a rivet. It worked, but there is far better stuff out there these days from all the fork manufacturers, including marzocchi.

I have RC2 and RC3, I'd say the RC3 has a much better option to run a lot of LSC without spiking, that said I have turned up the compression quite a bit with my RC2 and it wasn't too bad. I was compensating that day for not having an air-pump and I didn't want to bottom my fork (coil spring+air combo on 170mm 66), but I'd say the RC3 is a good step above.
Click to expand...
How so? I'm curious. I haven't cracked open an RC3 cartridge yet, and I'm curious how the "X" cartridge in the RC2X forks actually works - as far as I can tell it's just a high speed/end stroke/large displacement damper.
 
O

Old_Sckool

Monkey
Jun 5, 2007
187
0
Jm_ said:
I sawed one in half. The rebound-bleed-piston is on the moving shaft, the compression piston is in the bottom of the cartridge and it's stationary, but the action of the fork compressing forces fluid through it. The compression piston has shims on the compression side, and on the backside it is shimmed for high speed rebound. The thing though is that the HSCV/marzocchi cartridge damper from the old days is VERY crude and basic. They may have nailed the high speed regime, but the LSC control consists of holes drilled in the bottom of the cart. Again, very crude and simple. Even if you could open up the cart, you couldn't reshim it, the shims are held in place by a rivet. It worked, but there is far better stuff out there these days from all the fork manufacturers, including marzocchi.

I have RC2 and RC3, I'd say the RC3 has a much better option to run a lot of LSC without spiking, that said I have turned up the compression quite a bit with my RC2 and it wasn't too bad. I was compensating that day for not having an air-pump and I didn't want to bottom my fork (coil spring+air combo on 170mm 66), but I'd say the RC3 is a good step above.
Click to expand...
Jm. Thanks for that info. I have an old Monster T that I love, all but the lack of low speed compression.

Do you think blocking off one or two of the holes in the bottom of the cartridge, (like 04/05 888 type compression sleeve) could add some low speed compression. Or would that also affect the high speed compression?
 
Jm_

Jm_

sled dog's bollocks
Jan 14, 2002
18,993
9,649
AK
Old_Sckool said:
Jm. Thanks for that info. I have an old Monster T that I love, all but the lack of low speed compression.

Do you think blocking off one or two of the holes in the bottom of the cartridge, (like 04/05 888 type compression sleeve) could add some low speed compression. Or would that also affect the high speed compression?
Click to expand...
Usually a modification like that is going to affect LSC mostly, but there's usually some affect with the HSC (just not as dramatic). I wouldn't do it due to how crude the lsc is though. I guess it wouldn't hurt to try.
 
Jm_

Jm_

sled dog's bollocks
Jan 14, 2002
18,993
9,649
AK
Hacktastic said:
How so? I'm curious. I haven't cracked open an RC3 cartridge yet, and I'm curious how the "X" cartridge in the RC2X forks actually works - as far as I can tell it's just a high speed/end stroke/large displacement damper.
Click to expand...
I was discussing the HSCV/cartridge damper, RC2 and RC3 cartridges, not the "x" cartridge. I don't know as much about that one.
 
Kanye West

Kanye West

220# bag of hacktastic
Aug 31, 2006
3,741
473
Gotcha. So what are the internal differences between the RC2 and RC3 carts?
 
J

jamesdc

Monkey
May 6, 2007
469
0
The x-cartridge really is just bottom out, not high speed compression. It doesn't kick in until the last inch and a half of the travel. I run mine only like 3 clicks from full open since the 888rc2x already ramps up alot without it. Hey Gordon, i have a broken x cartridge lying around if you want to cut it open and see how it works.
 
IH8Rice

IH8Rice

I'm Mr. Negative! I Fail!
Aug 2, 2008
24,524
494
Im over here now
Avy Rider said:
Just a heads up that Craig at Avalanche is working on cartridges for several major forks including the 888's so you will be able to have incredible performance and improved reliability. He's going to be testing prototypes for the next 6 or so months before making them available.
Click to expand...
i know of a certain someone taking delivery of his very very soon
 
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