Chapter 2: Front End; Chapter 3: Rear End Adjustment - j3 competition kosmic Manual

may have a chassis problem.
Once final weight placement is determined, secure all weight properly. Preference is Grade 5 or better with 5/16 bolts of
appropriate length. Be sure to cross drill and safety wire or safety clip each one. Most sanctioning bodies require double
nutting of ballast as well. Be sure to consult your rule book. If your weight is not secure, this can cause serious problems for
other drivers at the track if your weight comes loose. Not only does this have the potential to cause injury and equipment
damage, it is basis for disqualification during a race.

Chapter 2: Front End

2.1: Introduction to the Front End
Many important and easy handling adjustments can be made to the front end of the kart. Most handling problems that occur
during the entrance of the corner are probably results of improper front end adjustment. Turn in, front end bite, and steering
response can all be corrected by simple adjustments to the front of the kart.
2.2: Toe Adjustment
The toe settings on a kart can effect weight distribution, top speed, and cornering response. The more the kart is toed in or
out, the slower the top speed becomes due to excessive drag by the tires. Increasing toe out will increase initial cornering
response. If the kart feels touchy and the back end gets loose at the entrance of the corner than you probably have too much
toe out. Neutral toe adjustment is recommended for Tonykart chassis. The toe should only be changed as a last resort. Look
to other adjustments first to correct handling problems before changing your toe settings.
IMPORTANT: When making adjustment to toe, make sure that the toe is equal on each side. Twist the tie rods until they are
completely in or out, and mark them. Turn them back in from there, measuring toe and counting turns until the desired point
is reached.
2.3 Castor
Castor effects the bite of the front and rear end and also changes apparent weight of the steering. It does this by transferring
wieght to the opposite rear wheel during cornering. The less castor in a kart, the less road-fell the driver will receive. Castor
adds feel and bite to the front end. On Tonykarts, there are two pills used to adjust the castor giving you three possibilities:
12 degrees
Neutral (14 degrees)
16 degrees
For most applications, use the neutral castor pill. Too much castor slows the cornering speed of the kart due to unneccessary
grip. However, on cold days, or when the use of harder compound tires are required, adding castor can help prevent
understeer and make the kart more driveable. Although the use of 12 degrees castor in Tonykarts is uncommon, it may
be necessary under sticky track conditions to free up the kart.
2.4: Spindle Height
By rearranging the two spindle spacers, the spindle height of each side of the kart may be changed. Keep both sides the
same height. By moving both spindle spacers to the top of the spindle, you are raising the front end of the chassis. Raising the
chassis height creates more leverage in which to transfer side weight to the opposing tire and thus results in more front end
bite at the entrance of the corner. Lowering the chassis, or moving both spindle spacers to the bottom of the spindle, has the
opposite effect and creates less front end bite at the entrance of the corner.
2.5: Wheel Spacers
The most common and easiest adjustment to make to the front end of the kart is to change the front track, or front end
width. Widening the front track will create more flex in the front end of the kart and result in more front end grip and quicker
turn in. Narrowing the front track will have the opposite effect and result in slower turn in and less front end bite.
2.6: Camber

Chapter 3: Rear End Adjustment

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