Front end chatter

Since i've put the gixer front end on, and rejetted the carbs i've noticed that under very hard acceleration or 80 + mph i get some front end chatter.

I've a diablo on the front 120/70 and a Bt020 on the back, standard chain n sprocket, it's prob a little old 2 years+

I've a Zx10r on the back also from last year.

While i'm putting it down to suspention set up for the moment i'd just like to hear a few other idea's as to what could be causing this.

So when the suspension is unloaded it's talking to you...
What does it do when it's loaded into a bend or when braking hard?

Well thats one way of describing it alright, i found this article earlier

"First we need to determine if the head shake is occurring during acceleration or de-acceleration (chopping the throttle)
If you find the front end skipping or wandering (seems to be searching for traction) and or starting to swap while under acceleration, you will normally need to add rebound (turn in) or reduce your compression 2 clicks"

Think i'll take her to the pro's and se what they can do with it, the back squats a little also i've noticed on bumps

any chance you can post the article up chap?

and is that front or rear comp/rebound?

Front i assume

Here's the article's link

http://www.gpssuspension.com/tuning.html

2.) Find large jump that tends to bounce the motorcycle after hitting it. If the rear end bounces up, add rebound. (Turn clicker in)

errrmmmmmmmm. might want to find a different article

[Bibio]

yup.. rebound is to 'soft' (fast rate) which basically means that when you are going over a bump the rebound is letting the spring return to its 'relaxed' position to fast.

BTW.. compression and rebound is only the control of the spring, if the spring is not set up for the rider then no amount of comp+rebd adjustment will help.

compression and rebound. 'hard = slow movement' 'soft = fast movement' of the spring.

could just be squatting at the back too much and lifting the front so it gets a bit of a weave on.

could also be the mismatched tyres...

Bit of a mash up, but even with the other tyre i had on when we first installed the front end it was chattering, I'd say it's the mix of suspentions, i know the ZX10r is stock setup for the ZX and Ter had the forks setup for this 750 when he was on the track with them, so there all prob way off for the SV.

I'm thinking it's time to give her to a pro and have him set her up for me .

yeah that could be a plan. proly needs the sag and all sorts sorting - witchcraft obviously

btw is it chatter or weave?