Join Date: Jan 2005
Location: In front of you!
How to setup your suspension for circuit racing
The following are the recommended settings for track riding that can be used as a starting point for chassis set-up. This data is based on a 132 pound rider, and settings may differ depending on track conditions, rider weight/size and riding style. These settings are recommendations only, so use them as a reference for finding your own ideal settings.
2004 MODEL YEAR
Preload- front STD:14mm; rear STD: 178mm
fork tube height- front STD: 0mm; rear --
Ride height adjustment (spacers)- Front --; rear STD: 3.2mm
Fork oil level- Front STD: 91mm; rear --
Rebound damping- Front STD: 9 clicks out; rear 2 1/4 turns out
Compression damping- front STD: 7 clicks out; rear 3 1/2 turns out
2005 MODEL YEAR
Preload- Front 16mm; rear STD: 178mm
Fork tube height- Front STD: 0mm
Ride height adjustment (spacers)- Front --; rear 0mm
Fork oil level- Front STD: 101mm; rear --
Rebound damping- Front 6 clicks out; rear STD: 1 3/4 turns out
Compression damping- Front 7 clicks out; rear STD: 3 turns out
*Note that the suspension of the 04 and 05 models are different. Using suspension settings for the incorrect year may result in a set-up with less than desireable handling characteristics.
Lowered front, raised rear set-up
Initial turn-in is improved but rear wheel traction is reduced. If the front is lowered too much, the bike will tend to oversteer, making it difficult to make a proper corner exit.
Lowered rear, raised front set-up
Initial turn-in is worse and it is difficult to hold an inside line, but rear wheel traction is good. Cornering performance from mid-corner to corner-exit may be better in some cases.
Note 1: If the fork tube height is more than 5mm above the steering head, the chassis stance will be significantly changed and may have a large influence on handling qualities. When determining the appropriate setting, it is best to change the fork tube height in small increments.
Note 2: Brake feel will change depending on fork oil level. If the oil level is too high, excessive loads will be placed on the tire, which can adversely effect brake feel. If this occurs, try lowering the oil level.
Note 3: To adjust the rear ride height, the spacers available in the race kit will be needed. If the rear ride height is raised more than 5mm over standard, the chassis attitude will be significantly changed and may have a large influence on handling. So it is best to select the appropriate rear ride height by making adjustment in small increments. If the ride height is raised too much, the initial action of the rear suspension may be softer, and while this may not affect corner entrance, it may caise the rear end to sag excessively in mid-corner or when exiting turns. If this occurs, increase the rear preload. Generally, if the rear ride height is increased by 1mm, the preload should also be increased 1mm.
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