Shim Stack theory on oil flow

[overbore]

Is it common theory to always start out with the
bigger shims like 4 24s then 22 to clamp then more
for next stage ?And also when changing the midvalve
to check on compression then does all the dampning
being controlled on the base valve so it has to be
stiffer for the most part in theory?
And last why do some people rung single stage and
some run 2 stage?
most of our riding is woods riding and didnt know if
single is for supercross and 2 stage is more for woods
althou are last ktm has what I thought was single stage.
Thanks overbore

 

[overbore]

Atleast someone tell me if changing the midvalve to a check mean that all compression
would then be done by base valve?
I am not trying to get any tuners secret here just asking generic questions.
overbore

 

[kawamaha]

well the midvalve works as a check valve at low speed. only at high speed is has influence at the compression damping. the most damping work is done by the base valve.


http://www.supercross-online.de/Z/susp.htm

 

[PMK]

It is normally designed and so larger face shims are installed to lay flat onto the valve body face. The quantity of large dia face shims is a tuning setup, palcing a smaller dia between the larger diameters creates a transition or crossover. This done to further tune certain aspect of the valving. Many times you see these transitions in off road application but they could be used in any application as the tuner sees fit. The reason for the transition or 2 stage type valving is to normally allow for softer initial compliance that ramps the valving firmer once the 2nd portion of the shims are applied. Appologies if this is overgeneric, I'm not sure if you are specifically heading somewhere with this or just needing some info.

Converting the MV to a checkplate will place virtually 100% of the compresion fluid control into the BV. I say virtually 100% because not all flow is through the shims, depending on setup, a portion of fluid flows through the freebleed/clicker.

Yes it is possible your KTM was delivered with a single stage type shim format.

PK

 

[overbore]

Hey thanks for the responses.
I am still just trying to understand or ask questions to constantly
driven questions in my head as I am still learning and trying to
understand how it all works together and how one thing effects another.
thanks overbore