Advice on front fork springs

[Bibio]

lol..



you need that little pogo effect of the overshoot but just the up and not down then up again. its very very hard to describe unless you know. the last ting you want is pack down.


if you have used 7.5w silkolene and not 10w and 8.5 linier springs for 11-12st then things should be good.

[pedro3178]

Originally Posted by Bibio

lol..



you need that little pogo effect of the overshoot but just the up and not down then up again. its very very hard to describe unless you know. the last ting you want is pack down.


if you have used 7.5w silkolene and not 10w and 8.5 linier springs for 11-12st then things should be good.

My apologies. It was indeed LINIER springs I used and not progressive!

I filled both forks to 100mm from top of fork ( without springs inside )

What is pack down ?

[Bibio]

packed down is a phononoman that occurres (sp) when you grab the brake and or while hitting bumps in the road. what happens is for each consecutive bump your suspension will move further and further down the stanchion till you have no more travel left. e.g. your rebound cant react fast enough to your compression. to test this you use rumble strips on approaching roundabouts/junctions.


dont worry with 7.5w and .85 linear and 11-12st rider you will be fine as i can guarantee you will have a little overshoot on your rebound.

[pedro3178]

Thanks for all your help.

[WSV650]

Interesting post and Bilbo seems to crop up lot for suspension advice.
Ive a 2005 Gen 2.
90kg fully kitted
15W Oil
K Tech 9.0 springs
pre load on 2nd line from top.

Ive got some modified damper rods to fit along with YSS emulators. Reading this ill start with a 130mm air gap and 2.5 turns on the emulators. I believe this is 2.5 turns from when applying pressure to the spring? I will mainly using this bike for track days with some road riding as well occasionally.

Do you feel this is a good starting point?

[Adam Ef]

Sounds smilart to the setup I had.
Yes, 2.5 turns from where the nut starts to have an effect.
Preload will depend on how you have the back set up and will be amixture of measure the bike sag and then adjiust slightly for feel depending on the riding you're doing.

[gadget]

Well, I've recently done the fork mod on my 99 curvy 'S' and the transformation is like night and day. I'm 12.5 stone and went for k-tech linear 9.0 springs and used silkolene rsf 10w fork oil. This combo suits my weight and riding style perfectly, it's not the very best upgrade available but as a good 'base line' imo it's brilliant.

[WSV650]

Originally Posted by gadget

Well, I've recently done the fork mod on my 99 curvy 'S' and the transformation is like night and day. I'm 12.5 stone and went for k-tech linear 9.0 springs and used silkolene rsf 10w fork oil. This combo suits my weight and riding style perfectly, it's not the very best upgrade available but as a good 'base line' imo it's brilliant.

Was this with emulators ? If so what did you set the emulators at?

[gadget]

Originally Posted by WSV650

Was this with emulators ? If so what did you set the emulators at?

No emulators, just springs and oil, haven't found the need to delve deeper tbh, It more than suits me and my style of riding.

[Bibio]

Originally Posted by WSV650

Was this with emulators ? If so what did you set the emulators at?

unless your doing track work all the time then emulators are not worth it.

my advice for what its worth is to weld up the rebound holes, fit linear springs for your weight and RSF 7.5 or 10w oil. you must use Silkolene RSF as its known to work.

the SV has not too bad comp as standard but its the rebound thats carp... this is why you weld up the rebound holes on the damper rods.

unless your some god like Rossi then you are never going to use your suspension to full potential. emulators will and do make for a harsh ride on the road unless your willing to take your forks apart for about 10 times. emulators only really work in compression.

if you want to do it right then do as i suggest above but start with 7.5wt oil then use 20w as the 40ml at a time to get it right for rebound. take 40ml out of fork legs then add 20wt and repeat till you get a proper rebound.