afternoon tuning during Daytona Sportbike and American Superbike Practices

Matt Bergen  # 152   

AMA Spec Tire

4 laps to get tires hot, set pressure to 23 rear & 27 front with calibrated gauge

4 laps focusing on T11 for hard braking. Forks bottom added all available preload

2 laps on T11 still bottomed add 1/4 turn of compression

2 laps on T11, too stiff and removed 1/8th turn of compression -much better

Rear tire showed rebound was too slow and bike would not finish corner

Removed 3 clicks of shock rebound

4 laps evaluating drive out of T3

Bike finished the corner but chattered in T9 with neutral throttle

Removed 1/2 turn of rebound

No chatter T9.

Chassis working well, no issues.

Sahar Zvik  # 161   

AMA Spec tire

4 laps to get tires hot, set pressure to 23 rear & 27 front with calibrated gauge

4 laps focusing on T11 for hard braking. Forks too stiff removed 2 turns of preload

2 laps on T11 still too stiff, 1 turn out of preload

Chatter on the brakes in T11 and T5, removed 1/2 turn of rebound

2 laps still had chatter removed 1/ turn of rebound

2 laps, chatter gone.

4 laps not turning in adequately removed 3 clicks of shock rebound and added 2 clicks of low speed compression

4 laps much better but still pushing  (session ends)

NOT: remove one turn of preload at a time to help the front end ride lower every 2 laps during Saturday morning practice.

Brad Puetz # 45

Dunlop NTech slicks

4 laps to get tires hot, set pressure to 26.5 rear & 35 front with calibrated gauge

4 laps focusing rear shock wallow in T3 & 4

remove 3 clicks of rebound, 3 clicks of ow speed compression

4 laps bike still standing up on exit

add three clicks of rebound remove three clicks of low speed compression

4 laps bike finishing better but still standing up

remove 1 turn of preload

6 laps bike drifting and sliding predictably

NOTE: spring may be too stiff at 575lbs, try 550 tomorrow.