>> > - squirrely front end at high speed
>>
>> Curious how heavy you are? Have you torqued all the triple clamp
>> bolts in several rounds to spec? Still running stock fork springs?
> I'm 225... I'm going to try torquing those bolts, and maybe tightening
> up the stem nut this weekend.
O.k. now pay attention to the torque spec, it's not particularly tight
so don't overdo it. You actually want some ability for the fork to
shift so if you bang the bike up it won't bend or break the forks,
they'll just shift a bit.
When you torque the bolts, keep rotating around them as when you
tighten one, the other will loosen. Took a good four rotations to get
them all evenly snugged down for mine.
My stem was very very loose when I got my bike used, snugging that
down helped as well. Now there's a nice even, light bit of drag on
the bars turning. Before I adjusted it, it would flop under its own
weight from side to side. Had quite a lot of slop to it.
>> My front end was very squirrely once over 50, felt like I was a
> plane
>> at liftoff. I changed the springs front and rear to match my weight
>> and get the sag right. I also torqued the triple clamp bolts
>> carefully. After making those changes the bike was transformed.
> Sounds like mine. The front end feels lights and bounces around from
> side to side. Sliding back actually does help a little (increases the
> rake?).
> Is there a spec for the sag? I should be getting the service manual
> this weekend, maybe it's in there? I was thinking about getting the
> Progressive springs, but was worried about that raising the front end
> up too high.
There's a formula for sag on a dirtbike, Devon helped me with that, he
knew it off the top of his head. Google will find it for you, there
are numerous articles explaining how you measure it. It's helpful to
have an assistant in doing so as you measure the height with and
without you sitting on the bike.
>
>> it's very stable and feels, how can I put it, 'neutral'. I can
>> control the front end easily now by minor weight shifts to either
>> lighten or weight the nose as I want to. Remarkable change.
>
> I'm glad this problem can be fixed!
> Dirk
>
What I did was replace the stock shock spring with a 500-560 LR
Progressive. I'd already bought it or after I did some reading would
have just gone with a 500lb or so straight rate spring. At any rate,
the spring really helped. The added spring kept my rear from dropping
so far and thereby lightening the front end...which in turn makes it
feel too light and skittish on the road.
I also went to the LR Progressive fork springs and cut one of the
stock spacers directly in the middle and used the halves as preload
spacers. Major difference in feel as well as being right on the money
for my weight for preload height.
One more thing to check carefully is your rear axle adjustment and
alignment. Measure from the swingarm pivot bolt center to the center
of the axle on both sides. It should be equal.
If the rear of the bike is out of whack in any number of ways, the
feel of it can manifest itself as though there is something off with
the front of the bike. It's all a sort of delicate balance and is
amazing the difference even small changes can make.
Fred at
www.arrowheadmotorsports.com has the LR spring and the LR fork
springs,
www.eshocks.com has straight rate springs.