Honk
TY 4 Stroke Master
I am wondering what kind of changes should be made to the preload. I installed the next heavier spring (5.5) , and did the revalve also,on my 07 GT. How will this change affect my adjustments? Will I need to back off on my preload? I'm 210lbs And it bottomed out bad last year. Thanks in advance guys Honk
Apex/Attak Frequently Asked Questions
MrSled
Site Admin
Joined: 14 Apr 2003
Posts: 3950
Location: Wausau, WI
Posted: Sat Dec 10, 2005 5:13 am Post subject:
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Spring sag procedure and spec is same for all '05 and '06 monos and is highly recommended. It's simple to do but requires two people because someone gets to lay on the ground and measure spring length while you're sitting on it.
1. Measure the spring length with the unit hanging or tipped on it's side (suspension unloaded).
2. Measure the spring with the rider sitting on it in normal riding position (moving forward and back on the seat will affect sag). The spring length with rider on it should be 40~45mm shorter than the hanging length. Adjust preload to achieve this spec. If max preload will not achieve proper sag, you need a heavier spring.
Several notes / cautions:
- On Ohlins stock spring DO NOT adjust spring length shorter than 262mm hanging length. A couple mm shorter than 262 won't damage it, but don't go any further, if you go shorter and coil bind the spring repeatedly you WILL damage the spring.
- After any preload adjustment you must do both measurements again.
- The procedure and 40~45mm spec works for '05 and '06, KYB and Ohlins, 121" and 136" and optional heavier spring.
- This is an effective noticeable adjustment and actually increases ride comfort even if increased preload is necessary for heavier guy.
This is the way I set my GT tonight and I also added 10 more click of harder rebound from stock for my weight. At 250 lbs my sag is about 3/8 to much with the stock spring set at max as stated above so I will still get a heavier spring. But at these setting I took my GT down some rough crap trail areas near my house that normally toss me off the seat and It ate them up with ease and I coudnt help going back over those areas again and again smiling the entire time....these adjustments can go along way guys...look into this.
_________________
MrSled
Site Admin
Joined: 14 Apr 2003
Posts: 3950
Location: Wausau, WI
Posted: Sat Dec 10, 2005 5:13 am Post subject:
--------------------------------------------------------------------------------
Spring sag procedure and spec is same for all '05 and '06 monos and is highly recommended. It's simple to do but requires two people because someone gets to lay on the ground and measure spring length while you're sitting on it.
1. Measure the spring length with the unit hanging or tipped on it's side (suspension unloaded).
2. Measure the spring with the rider sitting on it in normal riding position (moving forward and back on the seat will affect sag). The spring length with rider on it should be 40~45mm shorter than the hanging length. Adjust preload to achieve this spec. If max preload will not achieve proper sag, you need a heavier spring.
Several notes / cautions:
- On Ohlins stock spring DO NOT adjust spring length shorter than 262mm hanging length. A couple mm shorter than 262 won't damage it, but don't go any further, if you go shorter and coil bind the spring repeatedly you WILL damage the spring.
- After any preload adjustment you must do both measurements again.
- The procedure and 40~45mm spec works for '05 and '06, KYB and Ohlins, 121" and 136" and optional heavier spring.
- This is an effective noticeable adjustment and actually increases ride comfort even if increased preload is necessary for heavier guy.
This is the way I set my GT tonight and I also added 10 more click of harder rebound from stock for my weight. At 250 lbs my sag is about 3/8 to much with the stock spring set at max as stated above so I will still get a heavier spring. But at these setting I took my GT down some rough crap trail areas near my house that normally toss me off the seat and It ate them up with ease and I coudnt help going back over those areas again and again smiling the entire time....these adjustments can go along way guys...look into this.
_________________
Honk
TY 4 Stroke Master
Tcona, I read all that first Thanks, but my question is will I need more spring pressure or less with the heavier spring? I assume It will be less, I haven't done any measuring yet. Just wondering what everyone else found when changing to heavier spring. Thanks.
You'll need some seat time, to settle it in and for your riding style/conditions.
I found I needed to take some preload off the spring. Until I found the "right" amount of preload, in this case less, my shock adjustment didn't seem to make much of a difference.
I found I needed to take some preload off the spring. Until I found the "right" amount of preload, in this case less, my shock adjustment didn't seem to make much of a difference.
NY AttakGT
TY 4 Stroke Guru
What's up Hoooooooooooooonk!
Ditto on the seat time. But I think in time you will need less preload. The spring wont break in until after a couple hundred miles......depending on conditions, riding style, etc....
But I will say less preload than the lighter spring, in the long run.
--Steve (O.C.)
Ditto on the seat time. But I think in time you will need less preload. The spring wont break in until after a couple hundred miles......depending on conditions, riding style, etc....
But I will say less preload than the lighter spring, in the long run.
--Steve (O.C.)
I think that when you change a spring,you have to reajust the "sit in"length to the 40-45mm. That adjustment should take care of your preload.After some riding it may need some adjustment.
Honk
TY 4 Stroke Master
Thanks guys. I had never heard that the spring changes after a while, but come to think about it, it just kept getting worse last year. Makes sence. Thanks, Honk
Steve we ridin this year ? Lets set it up!! SSEEEEYYYAAA! Honk
Steve we ridin this year ? Lets set it up!! SSEEEEYYYAAA! Honk
