reveille
Husqvarna
Pro Class
So I have posted a few times scattered throughout the Austrian 4 stroke section regarding my suspension rework. I decided to start a new thread to place pertinent information in a better organized fashion. Hopefully future owners will be able to find information easier.
To start, my riding weight in full gear is right at 240lbs for reference. I'm tall so seat height isn't a concern to me but may for some. The stock springs on my bike were a 5.7N rear spring and 4.4N fork springs. I needed about 14mm of shock spring preload to hit the race sag settings with the stock springs. I rode like this for 1 day of heavy trail riding, log crossings and rooted/stepped hill climbs. After that day it became apparent that heavier springs would be in order due to bottoming out and harshness. First I installed a 6.2N rear spring and set the sag thinking I could live with the under sprung forks. After a short ride off road it quickly became apparent that the fork springs were a problem. The only way I can describe it is it felt like the shock spring was pushing the fork springs down when going over small whoops, sorta like a seesaw or baby buggy effect which was unsettling. I added some shock rebound and it mitigated that effect a little but it was still weird. So I decided to order some 4.8N fork springs. I got those from Slavens racing along with the fork cap removal tool. Changing the fork springs was a snap. Took 15 minutes to do both springs at the most. These 4CS forks are a breeze to work on, at least so far. I rode for an hour or so last night and then had a buddy come over and help me measure race sag. Sag is spot on now and the suspension feels very compliant. I have a 2 day event this weekend so it will be a good shakedown on the new springs. I may need to dial my rear rebound a bit to quiet the chatter on down hill braking. Sounds like a bag of bolts at times. I think it needs to be slowed down then right? Should be easy to dial out.
This is the tool you need to remove the fork cap. I guess you might be bable to make a pin wrench if your crafty.
To start, my riding weight in full gear is right at 240lbs for reference. I'm tall so seat height isn't a concern to me but may for some. The stock springs on my bike were a 5.7N rear spring and 4.4N fork springs. I needed about 14mm of shock spring preload to hit the race sag settings with the stock springs. I rode like this for 1 day of heavy trail riding, log crossings and rooted/stepped hill climbs. After that day it became apparent that heavier springs would be in order due to bottoming out and harshness. First I installed a 6.2N rear spring and set the sag thinking I could live with the under sprung forks. After a short ride off road it quickly became apparent that the fork springs were a problem. The only way I can describe it is it felt like the shock spring was pushing the fork springs down when going over small whoops, sorta like a seesaw or baby buggy effect which was unsettling. I added some shock rebound and it mitigated that effect a little but it was still weird. So I decided to order some 4.8N fork springs. I got those from Slavens racing along with the fork cap removal tool. Changing the fork springs was a snap. Took 15 minutes to do both springs at the most. These 4CS forks are a breeze to work on, at least so far. I rode for an hour or so last night and then had a buddy come over and help me measure race sag. Sag is spot on now and the suspension feels very compliant. I have a 2 day event this weekend so it will be a good shakedown on the new springs. I may need to dial my rear rebound a bit to quiet the chatter on down hill braking. Sounds like a bag of bolts at times. I think it needs to be slowed down then right? Should be easy to dial out.
This is the tool you need to remove the fork cap. I guess you might be bable to make a pin wrench if your crafty.
