98 Showa shock revalve

This is the cr250 stock stack.  Converting this bike over to a woods racer.  Put my forks on here last week and you all were a huge help...thanks.  Now its on to the shock.  Any ideas or rules of thumb for making the shock more suitable for the woods.   Thanks.

 

Reb

36.2 x 7

25.1

36.3

34.3

32.3

30.3

28.3

26.3

24.3

22.3

 

Comp

40.2 x 7

34.2

23.1

40.2 x 3

38.2 x 2

36.2

34.2

32.25

30.25

28.25

26.3

24.3

22.3

21.3

20.3

38.3 x 6

 

You want less hs than you have ,all 0.2 in the hs section would help

The 34x2 and 23x1 used as a factory crossover is definitely going to be a problem.

I would suggest a 30x1.5 or 32 X1.5 instead.

So leave the seven shims against the piston.

Then a crossover after that use 1. 40×2. Stay with 0.2 shims until you get down to the 32 then make the rest of them 0.25 in thickness.

The last shim makes a big difference you could experiment all the way from 22 mm down to 18.

If are cheap like me and you want to work with what you have you could try something like this:

 

Comp


40.2 x 6

34.2 

40.2

36.2

34.2

32.25

30.25

26.3

24.3

20.3

38.3 x 6

Im all for cheap but it sounds like I could use a few shims.  I have a pro action near my house so I might be able to buy some shims there.  I am on a bit of a time crunch so if I cant get any I will give your stack a try turbodan.  Using the above advice and if I get shims how does this look.

 

Comp

40.2 x 7

32.15

23.1

40.2

38.2

36.2

34.2

32.25

30.25

28.25

26.25

24.25

22.25

21.25

20.25

38.2

40.2 x 2

 

 

From 32 down using .25's instead of .2's would save me buying a few shims.  E-tech...were you wanting me to leave out the 23.1 in the crossover?

No use a 30x1.5 or 32x1.5 only for x over. Do not use a 0.2 for x over.

There are many ways to skin a cat... Some will say 36x1.5 and a 28x0.1 for a x over ... Just as an example only..

No use a 30x1.5 or 32x1.5 only for x over. Do not use a 0.2 for x over.

There are many ways to skin a cat... Some will say 36x1.5 and a 28x0.1 for a x over ... Just as an example only..

Ok so...

40.2 x 7

30.15 or 32.15

40.2

38.2

and so on.

Yes and you can tune by starting 0.25 at around 32 or so and or changing the clamp shim .... For example there will be a big difference in how the shock will feel with a 22x 0.3 clamp versus a 18x0.3

I'm not saying I am right I'm just saying tuning is a black art everything depends on your skill level, what you will do with the motorcycle, and the hardness of the terrain...

For example are you riding rolling sand whoops like South Carolina??? Or a Rockpile like south-central Pennsylvania in the woods?

I don't see a problem with a .2 crossover especially for woods.  Too little crossover gap and you'll be getting into the high speed portion of the stack on small hits like roots and square edges.  I usually run two .1 shims like a 28 and a 34 for the crossover but in a pinch I don't see why a single .2 wouldn't suffice.

Well there you go like I said there's 1 million ways to skin a cat go ahead and throw a 20 in there...

.....

Im riding western pa and eastern ohio rocks, roots, mud. No mx.  Tight single track mainly. I bought some shims today at a local pro action.  Using the 30.15 for the crossover.  He didn't have a 21 so I bought an 18 to use as the clamp so its 22 20 18 now.  I bought all .2's that way I have some .25's to play around with.  If its to soft I can always add some different thicknesses back into the high speed section.  My shock bumper came today so I will be spending my Good Friday putting it back together woohoo!

Edited by Sam097

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