Fork dive

the phantom pieman · 02-Apr-2005, 22:58

Had my first trip of the year on my 998S. Cycle cat bar risers have made a huge difference ....

However , after not really riding it that much last year, I was reminded of another "issue". (please note other bikes are GS ADV and a Buell M2).

When you hit the front brakes, and perhaps because they are so effective, the front of the bike dives ... to the point where it feels un-nerving.
I'm heavy ... 125 kgs, and preload is wound in ... Does anyone have any good suggestions re set-up. In theory the bike was set up re rebound and compression when I bought it from Forza italia.

It sort of ****es me off ... or do I just have to get used to it again. Or is the issue really that the brake feel is a little wooden ( to me it allways feels like they are an on/off switch)

[Edited on 2-4-2005 by the phantom pieman]

Mr_S · 03-Apr-2005, 01:16

Preload's not the thing to play with here, try increasing compression damping, and if you have that at max and it still dives too much for you try a heavier oil.

Strange that you notice the dive, as to me the 748/9** chassis dives less than any other.

[Edited on 3-4-2005 by Mr_S]

nelly · 03-Apr-2005, 13:35

I'd go along with the advice from Mr S.
The preload won't cure the problem. Use the preload, front and rear, to set the sag up. You want the bike to settle about 25mm (ballpark) when you sit on it.
Turn the compression damping up to lessen the dive. It's the one in the bottom of the forks.
If my maths is right, at 125kg, you may need to have the forks and probably the shock resprung and revalved to get the best out of the bike.
Give K-tech (01530 810625) or Kais (01942 896366) a call.

the phantom pieman · 03-Apr-2005, 14:41

Thanks ...

Will give compression damping a go ....

Totto · 03-Apr-2005, 17:12

Have a read here http://www.gostar-racing.com/informa...ion_set-up.htm , you will prob need harder springs !

rcgbob44 · 03-Apr-2005, 20:52

Pieman

How about posting a few piccs of your cycle cat bars, I would be interested as I`m thinking of fitting some to my 998.

the phantom pieman · 03-Apr-2005, 21:28

Quote:

Originally posted by rcgbob44
Pieman

How about posting a few piccs of your cycle cat bars, I would be interested as I`m thinking of fitting some to my 998.

will tomorrow be ok ?

Can be arsed to walk the 7 flights of stairs down to the garage ....

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03-Apr-2005, 01:16	#2
Mr_S Registered Forum User Big Twin Posts: 1,324 Join Date: Mar 2004 Location: Gosport Preload's not the thing to play with here, try increasing compression damping, and if you have that at max and it still dives too much for you try a heavier oil. Strange that you notice the dive, as to me the 748/9** chassis dives less than any other. [Edited on 3-4-2005 by Mr_S] Reply

03-Apr-2005, 14:41	#4
the phantom pieman Registered Forum User GTL Posts: 449 Join Date: May 2002 Location: leaving ZH for Sussex - thank god ! Mood: Sort of shuffling along ..... Thanks ... Will give compression damping a go .... Reply

03-Apr-2005, 17:12	#5
Totto Registered Forum User Big Twin Posts: 1,262 Join Date: Jul 2002 Location: Northern Ireland Mood: Not so broke any more !!!!!!!! Have a read here http://www.gostar-racing.com/informa...ion_set-up.htm , you will prob need harder springs ! Reply