Caster & Lead
Quote RP .
Some info I have ,Lead If the right side of the kart has a wheelbase greater than the left side, the kart has lead.
Lag If the right side of the kart has a wheelbase less than the left side, the kart has lag.
when adjusting lead or lag you should always make sure that steering geometry is not sacrificed. Changing lead or lag will not effect your caster, camber or KPI. Lead or lag will effect toe, front end alignment and static weights, and all should be reset to the desired settings after adjusting.
Moving the RF forward will tighten the chassis.
Moving the RF towards the rear of the kart will loosen the chassis.
Moving the LR forward will loosen the chassis.
Moving the LR towards the rear of the kart tightens the chassis.
Caster split is the difference in degrees when comparing the LF & RF caster.
The more caster split a kart has, the more the kart will turn naturally toward the side with the lower degrees of caster USUALLY LEFT, making the kart feel looser. Reducing the amount of caster split will tighten the chassis, As backwards as it may sound, tracks that are hard and abrasive are usually faster with low split, while tracks that are more loose are usually faster with 3 degree split or more.
Insufficient caster is noticeable in two ways, the kart will be darty and difficult to keep in a straight line on the chutes.
The kart will be extremely loose on corner exit, and may spin out at the slightest twitch of the steering, or without any warning whatsoever.
Excessive Caster is noticeable, When the kart begins to slow only several laps into a run.
When the Right side tires are overheating.
Where to start If you don't know 8 left and 11 right is a good starting point.
Remember
If the kart feels too tight and your using less than 2 degrees of split, increase the split.
If the kart feels to loose and your using more than 3 degrees of caster split, reduce the split.
caster changes the effects of cross, more caster equals more weight transferred and vise versa.
High grip tracks less caster can be used efficiently.