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showa shock revalve, which?

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Shock

Mod

Sag:103-105mm

Nitro: 165 psi

Comp:14

Reb:12

HSC: 3 out w/ Factory Connection Spring

Compression

(8) 44.25

36.15

32.15

42.20

40.20

38.20

36.25

34.25

32.25

30.25

28.25

27.25

26.25

25.25

24.25

23.3

22.3

19.3

 

Rebound

5-40.20

26.1

40.3

38.3

36.3

34.3

32.3

30.3

28.3

27.3

26.3

(quoted from the Dogger)

hi Dogger and any that can help me

I just want your (or anyone else's)  opinion and consent to go forward for 2007 stock shock  revalving on my 2007 CR250 2stroke

i am quoting you to follow this example.

i'd like to first harden the rebound and secondly soften the compression (because my newly fitted Factory Connection separator valve nut, hardens a little the compression on the first ride and i disassembled the shock to find a better configuration)

i do just slow enduro C level,on rocks and roots and of 45 years old.

160lb naked;182 lb protected

all springs for my weight

,stock shock revalve( i bought the bike brand new never ever revalved)

10bars nitro

Factory Connection Rebound separator valve nut ( 2,8mm bleed hole)

fresh service :11 cst 40º Ohlins oil and worn parts every 80-90 hours

 

i am looking forward your view.

thanks .I appreciate

 

 

Edited by frenando

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The rebound looks ok but comp you need to remove 30% of the face shims for a separator valve, but that's for a 1.5mm hole in separator, 2.8mm is large so I would remove 10% of the low speed shims , which is one 44.25 approximately

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hi Mog

long time since we last talk to each other

finally, i will go for revalving, no other way out, this is it.

tomorrow i will disassemble and post the oem showa shock shims distribution of my cr250 07

so, do you think that together with the revalving, the Rebound separator valve will be any good????

 

yours

 

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I think any combination can work if you spend enough time tuning, do you have the time ;-)

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not much time but the any good solution deserve a good time on it

so, do you think that together with the revalving, the Rebound separator valve will be any good????

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NUT--------         REBOUND STACK (16 SHIMS)  OEM CR250 2007 SHOWA SHOCK
28x3,2
25x0,35
25x0,35
27x0,35
28x0,35
29x0,35
30x0,35
31x0,35
32x0,35
34x0,35
36x0,35
38x0,35
40x0,35
25x0,1
40x0,25
40x0,25

PISTON
 
------COMPRESSION(33 SHIMS)
44X0,25
44X0,25
44X0,25
44X0,25
44X0,2
44X0,2
44X0,2
44X0,2
44X0,2
44X0,2
37X0,2
30X0,2
42X0,25
40X0,25
38X0,25
36X0,25
34X0,25
32X0,25
30X0,25
28X0,3
26X0,3
25X0,3
24X0,3
23X0,3
22X0,3
30X0,3
30X0,3
30X0,3
30X0,3
30X0,3
30X0,3
30X0,3
30X0,3

Edited by frenando

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"promises are debts"

to whom may be of interest, this is my oem showa shock rebound and compression stacks of my CR250 '07

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now, considering i have the Rebound separartor nut with 2.8mm bleed

what should be a nice revalve for rocks , roots and woods?

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It's called a separator or cross over shim , it allows the shims above to bend a small amount and open the ports before the full stack strength is felt , the 0.35 shims are a mistake , they don't make any that thick, 0.3mm is the thickest

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by the way, recomend me a new stack for the compression considering the rebound separator nut

Edited by frenando

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Thanks Mog.  For whatever reason this valving stuff is foreign to me. Computers are the same.

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I really dont know other than 10% softer than a good setting

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Tp begin with,

about a first compression setting:

my showa shock has got these first 10 shims on the compression side:

PISTON

44X0,25
44X0,25
44X0,25
44X0,25
44X0,2
44X0,2
44X0,2
44X0,2
44X0,2
44X0,2

 

how many shims should i take out , considering the installation of  the rebound separator nut?

 

 

thanks

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Your 0.2s add up to roughly 44.25 (3) so in total you have 44.25 (7)
10% of 7 is 0.7 , so you could take one 0.25 and that's more than 10% ( I would do that ) or take out one 0.2 , I don't think you would even notice that , this is all pure guess work, I might be miles off on these assumptions

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so Mog

there are 4 44x0.25 and 6 44x0.2

how many of each should i take out?

 

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Yes this gives a total of 44.25 (7) take one 44.25 out

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Hi Mog

first of all,  i want to re-use these stock shims, either( 4) 44x0.25 and (6) 44x0.2

you say to use 6 shims of 44x0.25, but i only have 4 shims of this thick

how can i proceed ?

remember i am using the Rebound separator

 

thanks

Edited by frenando

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