Jump to content
Sign in to follow this  

09 crf 450 valve stacks

Recommended Posts

revlaved my forks and shock a few days ago. I like the results however would still like some opinions from the guru's:thumbsup:

i weigh 58kg (under 130 lbs) not sure of my pace around fast b or slow a in oz.

Forks

Mid

20x.1 (3)

18x.1

16x.1

14x.1 (2) stock is 1

11x.3 (2)

17x.3 (2)

Base

32x.1 (12) stock is 17

20x.1 added 20x.1 crossover

32x.1

30x.1

28x.1

26x.1

24x.1

22x.1

20x.1

18x.1

16x.1

14x.25

20x1.6

Still running the stock .46 for springs and 330cc in the outer chamber.

Wanted the forks to stay high in there stroke to try help with the turning issues which it is doing but also wanted a plush ride hence the crossover.

Shock

Comp

44x.2 (6)

30x.2 didnt really have any other shims for a crossover

44x.2

42x.15 (3) used 3x.15's, didnt have a 42x.2

40x.2

38x.2

36x.2

34x.25

30x.25 (2) used 2x 30's, didnt have a 32x.25

28x.25

26x.25

24x.25

22x.3 (3)

Reb

40x.2 (3) Stock is 4

40x.15 (2) added

28x.1

40x.25 changed from .3

38x.25 changed from .3

36x.3

34x.3

36x.3

34x.3

32x.3

30x.3

28x.3

26x.3

24x.3

Same as forks wanted a really plush ride with the shock which it is however it kicks on occassionaly on square edges hard under brakes on fast sections.

Also wanted your opinions on the 30x.2 crossover, what effect would it have been a .2 instead of maybe 2 .15's.

4.8 shock spring however still have 50mm static sag and between 100 and 103mm rider sag. preload rings are wound all the way up so i cant try more sag and the numbers say i still need a softer spring anyway.

The setup for me is way better than stock but it hasnt helped the turning issues i have with this bike, currently looking at trading it on another 250f if i cant get it to turn.

I have daves dual spring deltaco but i wanted to get it handling the best i could before trying it so i can see what the differance really is.

thanks in advance for any comments.:lol:

Share this post


Link to post
Share on other sites
4.8 shock spring however still have 50mm static sag and between 100 and 103mm rider sag. [...] and the numbers say i still need a softer spring anyway.

yes, you need a softer spring

and as long as the sag isn't set correct it doesn't make sense to do anything else.

Share this post


Link to post
Share on other sites

and softer forks springs really, i know you are trying to achieve better turning and i dont see how it will turn with those springs?

Share this post


Link to post
Share on other sites

i have a set of .42's coming. I was thinking keeping the .46's in would maybe lessen the oversteer, but they dont. How much softer on the shock spring do you think i would need to go as race techs calculator said to use a 4.9. I had a 4.5 in my 250f.

Share this post


Link to post
Share on other sites

sorry its oversteering...yes i can see the problem...i would go one softer than the recommended rear spring rate for the bike, to try to balance it..i would try a 4.5 if you have it and i bet it will work nicer, and allow a more reasonable fork rate...maybe a mix of the 0.42 you have and a 0.46

Share this post


Link to post
Share on other sites

you rebound on the shock looks light to me.

Share this post


Link to post
Share on other sites
maybe a mix of the 0.42 you have and a 0.46

Yeah, a .44 rate would be better. You need to get the rear closer to 100-105 mm's rider sag with no more than 40mm free, 35 would be better. That will help keep the back from kicking so bad.

doc

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Reply with:

Sign in to follow this  

×