Forks on 04 WR 450, what did you do?


9 replies to this topic
  • MathProf

Posted August 25, 2004 - 04:35 AM

#1

I think that my forks could work better.

Has anyone made changes to their forks that made the action better?

I have a stock spring, 5.5 inches oil level, 5 wt oil.

I was considering 2.5 wt to soften the action in the trees, but would it be better to buy new springs before I change the weight of the oil.

I don't want to waste my time, so some help would be appreciated.

I have looked at peoples signatures to see what people have done, but most people seem to change things for more power. There are few suspension mods done.

  • ncmountainman

Posted August 25, 2004 - 06:08 AM

#2

i went to honda 5w fork oil and it does provide easier action,don't worry about it being red my bike hasn't spit it out yet! come out a little on your compression dampening,i run 16 out on comp and 8 out on rebound i've put .48 springs in though. this allows me to use the entire stroke without bottoming(unless i screw up!) :thumbsup:

  • Beta_Man

Posted August 25, 2004 - 06:27 AM

#3

I removed the mid-valve from the forks, and that really helped. Now it has a nice stroke all the way through the forks, with no hit in the middle.

  • MathProf

Posted August 25, 2004 - 07:40 AM

#4

This is the first time I have heard about the mid-value.

Mid stroke seems to be the big problem. I bottom too often, but if I increase the compression the action becomes harsh.
I'm currently at the softest compression setting.

Can you tell me where and how to handle the mid-value.

I'm wondering if a softer spring would make the mid stroke better or if the stock spring will work once the mid-valve is removed.

Is this where people talk about changing the stack to get more compression at certain places in the stroke??

  • jerryls

Posted August 25, 2004 - 08:40 AM

#5

If you're bottoming too often, you need to add more fork oil.

All I did with my forks was change the oil (5 wt) and they perform nicely. The oil in the forks for the factory was like black sludge.

The forks do seem a bit stiff when riding slowly, but when I'm smacking off the top of whoops in 4th gear, they work just fine.

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  • ncmountainman

Posted August 25, 2004 - 09:10 AM

#6

how much do you weigh? if your over 180 then the thing is undersprung for sure. going to a softer spring will make you bottom worse! yam makes spring spacers you can use up to 2 in each fork they go under your spring and increase preload without changing the spring rate therefore you use more of the available resistance throughout the fork travel. :thumbsup:

  • MathProf

Posted August 25, 2004 - 09:52 AM

#7

jerryls:

The forks work OK at speed, a little harsh at times, but OK.
The problem is I tend to race hares scrambles which is mostly technical tight trails but the occasional MX track section causes some bottoming if a over-jump a table, for example.

I have changed the oil a couple times (5 wt) already, and the action is still not what I think it should be.

ncmountainman:

I'm exactly 180. There is always some compromise when your terrain and course vary the way a hare scrambles course varies. I could increase compression to find a happy medium, but now the bike is only happy at MX speed.

I appreciate your responses and I'm thinking about all of them.

  • ncmountainman

Posted August 25, 2004 - 10:07 AM

#8

try the washers they are cheap and slide right in after removing the spring,and are you using the honda fork oil? it really did help. :thumbsup:

  • Beta_Man

Posted August 25, 2004 - 10:24 AM

#9

I tried diffrent levels and weights of oil but never got the results I wanted. I had to have the compression all the way out to get the smoothness I wanted, but then it would bottom out too easy. With the mid-valve removed I could make the compression alittle stiff yet still have a smooth fork. It's not that hard to remove the stack of shims that are for the mid-valve (didnt take any longer than changing seals). But unless you know what you are doing and what to remove it can be quite complicated.

  • MathProf

Posted August 25, 2004 - 12:31 PM

#10

ncmountainman:

The front fork is too stiff already I don't think I want to shim it, right?

bigd450:
I felt like something was wrong with the fork and you described it perfectly. I do all my own maintainence, so I'll look at the exploded view and see what it takes.

Thanks for the reply.




 
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