Acura iRacing ARX-06 GTP User Manual page 18

HE AV E SPRI NG DEFL
The Heave Spring Deflection is how much the Heave Spring has compressed from its free (unloaded) length. This is not
directly adjustable, but is altered as a result of other rear suspension adjustments, especially the Heave Perch Offset
setting. Higher deflection indicates the spring is under higher pre-load, lower deflection indicates a more relaxed spring.
HE AV E DAM PER DEFL
The Heave Damper Deflection is an indicator of how much travel is available in the Heave element before bottoming out.
This value doesn't represent any loading in the suspension, only the Heave Damper's position.
ARB SIZE
The Anti-Roll Bar (ARB) is a spring device in the rear suspension that counteracts roll movement but not vertical loading.
Changing the ARB diameter will alter the rear suspension's roll stiffness and handling balance: Stiffer ARB settings will
increase rear roll stiffness and induce oversteer, softer ARB settings will reduce stiffness and reduce oversteer. Disconnecting
the bar will remove the ARB from the suspension entirely and can greatly reduce mechanical oversteer, however this reduction i
n roll stiffness can hurt aerodynamic performance in high-speed corners.
ARB BL ADES
The ARB Blades (or arms) can be changed to further tune the suspension roll stiffness beyond only the ARB size setting. This
option changes the orientation of the ARB blades and are given numerical values for simplicity, with #1 being the softest option
and the blades becoming stiffer as the value is increased to the maximum setting of #5. Based on stiffness the blade option will
produce the same result as a similar adjustment to the ARB Size: Stiffer blade settings will increase rear roll stiffness and induce
oversteer while softer blade settings will reduce rear roll stiffness and reduce oversteer. This setting can be adjusted in the car
from the F8 black box using the "RARB" setting.
T OE -IN
Toe is the angle of the wheel, looking from vertical, relative to the chassis centerline. Toe-in is when the front of the wheels are
closer to the centerline while Toe-out is when the front of the wheels are farther from the centerline than the rear of the tires.
On the rear end, Toe will primarily alter how stable the car is in a straight line and how easily the car will change direction.
Toe-out settings (negative garage value) will increase turn-in response and make the car less stable in a straight line, while
Toe-in (positive garage value) will increase straight-line stability.
PUSHRO D LENG T H DELTA
This adjusts the length of both rear suspension pushrods together, shown as an offset from a baseline length figure.
This is a great way to adjust rear ride height without altering the preload on the Heave Spring.
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ACU R A AR X-0 6 G T P // US ER M AN UA L