Owner`s manual

TYRE PRESSURES
It is imperative that your tyres do not overheat during a race, as they will lose grip and you will lose
speed!
We recommend that you ‘Hot Pressure’ your tyres at the end of each session (i.e check the tyre
pressure immediately at the end of a session) then adjust all of the tyres to the working hot pressure.
Below is an approximate cold & hot pressure guide. For specifics, contact your local dealer.
‘Open’ tyres – Cold 9-10 PSI – Hot 13 PSI
‘SL’ type tyres – Cold 12-14 PSI – Hot 15-16 PSI
‘Low Grip SL’ tyres – Cold 22-24 PSI – Hot 26-27 PSI
NOTE: Due to the many specifications and compounds of kart tyres on the market today, we
suggest you seek information from your kart dealer or the particular tyre distributor.
REAR WHEEL HUBS
PROBLEM: “Understeer from the apex and out of the corner and/or the rear of the kart feels
stuck to the track, making it slow off corners”
Solution: Replace the rear wheel hubs with shorter units.
PROBLEM: “There’s no traction and/or the rear of the kart is sliding out under heavy braking
and/or oversteering coming from the apex out of a corner”
Solution: Replace the rear wheel hubs with longer units.
Why?
By increasing or decreasing the distance between the outside of the rear axle outer
bearings and the inside face of the rear wheel hub you are in fact increasing or
decreasing the amount of “working” axle. In other words, the length of axle between
the kart’s main chassis rails and the wheel assembly that is left clear to flex unhindered.
In the same way as altering the rear track width, reducing the amount of “working”
axle will make the rear bite into the track and sometimes provide more rear grip.
Instead of narrowing or widening the rear track, the ability of changing to longer
or shorter hubs is a major advantage in trying to obtain the ultimate kart balance.
Different length wheel hubs are available and these can be utilised to further fine-
tune your kart’s handling to your individual liking.
8 TYRE PRESSURES - REAR WHEEL HUBS