STACK Dash-2 Kart Logger 5. Using the Dash-2 Charts
22 Users Guide
G Forces
This chart displays wheel speed, lateral g
7
,
longitudinal g
8
, and combined g.
Combined g can be very useful to detect braking
problems; you should be able to achieve roughly the
same constant value from the start of the braking
zone to the exit of the corner. What the value is
depends upon track conditions, chassis setup and
tyres.
Gear Ratio
This chart displays wheel speed, engine speed, and
gear ratio.
The ratio trace gives a very clear indication of
wheelspin and lockup under braking. The trace goes
up for wheelspin, and down for lockup.
Lockup is evident in the example, at 190 metres and
515 metres. The small upward excursions of the
trace aren’t wheelspin, they are caused by tyre
deflections in the corners.
7
Side to side g-force. Left turns are positive g, right turns are negative g.
8
Accelerating and braking, also known as inline g. Positive g is acceleration.
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