Hello Guys, hello Jeremy!
At first please excuse my English. Hopefully you understand my questions.
I ride a ’97 YZ 125. OK, it’s not the newest but the rider has more effect on lap times …
I want to revalve my suspension at home because I’m really interested in the technology (how it works) ...
The Fork is too hard at the begin of the damping stroke. The fork gives all bumps to my hands … I guess the mid-valve is the reason. It restricts the oil flow to much through the valve on the damping rod … Maybe that’s one reason why race tech recommend to rebuild the mid-valve to a normal check-plate-design when they install a gold valve. Race Tech also recommend 10mm spring preload. (because the fork dives in deeper than before, so the preload will avoid it?!)
If I would rebuild the mid-valve to a check plate valve. The check plate lifts up round 1.7mm during the damping stroke. (So here is no more a damping effect. The oil can flow relative unrestricted and all the work is on the base valve.)
Is this opening not too much (it gives away all damping possibilities on the active valve) ? (I guess trough the base valve flows lesser than 1/5 of amount of oil than through the valve on the damping rod during the damping stroke!?! … )
How can I revalve my base valve in order to compensate this lost of damping?
I guess the spring preload has effects on the rebound damping. So should I reinforce the rebound stack?
Other bike brands use Kayaba too. Do they also use mid-valves?
I have no possibility to compare my compression stack on the base valve to others. So I hope someone can help me with tips or a list of his own compression stack. Much thanks ahead.
My stock compression stack on the base valve:
5x 0.10mm 24x8 (number, thickness, outer diameter in mm, inner diameter in mm)
2x 0.10mm 22x8
1x 0.10mm 20x8
1x 0.10mm 18x8
1x 0.10mm 16x8
1x 0.15mm 14x8
1x 0.25mm 11x8
At first please excuse my English. Hopefully you understand my questions.
I ride a ’97 YZ 125. OK, it’s not the newest but the rider has more effect on lap times …
I want to revalve my suspension at home because I’m really interested in the technology (how it works) ...
The Fork is too hard at the begin of the damping stroke. The fork gives all bumps to my hands … I guess the mid-valve is the reason. It restricts the oil flow to much through the valve on the damping rod … Maybe that’s one reason why race tech recommend to rebuild the mid-valve to a normal check-plate-design when they install a gold valve. Race Tech also recommend 10mm spring preload. (because the fork dives in deeper than before, so the preload will avoid it?!)
If I would rebuild the mid-valve to a check plate valve. The check plate lifts up round 1.7mm during the damping stroke. (So here is no more a damping effect. The oil can flow relative unrestricted and all the work is on the base valve.)
Is this opening not too much (it gives away all damping possibilities on the active valve) ? (I guess trough the base valve flows lesser than 1/5 of amount of oil than through the valve on the damping rod during the damping stroke!?! … )
How can I revalve my base valve in order to compensate this lost of damping?
I guess the spring preload has effects on the rebound damping. So should I reinforce the rebound stack?
Other bike brands use Kayaba too. Do they also use mid-valves?
I have no possibility to compare my compression stack on the base valve to others. So I hope someone can help me with tips or a list of his own compression stack. Much thanks ahead.
My stock compression stack on the base valve:
5x 0.10mm 24x8 (number, thickness, outer diameter in mm, inner diameter in mm)
2x 0.10mm 22x8
1x 0.10mm 20x8
1x 0.10mm 18x8
1x 0.10mm 16x8
1x 0.15mm 14x8
1x 0.25mm 11x8