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AutoDyn
Operators Manual
Section 6 - Page 8
CH6 AutoDyn Operation.fm
4. Install the tie-down straps, first at the front and then at the back to secure the vehicle.
Leave about an inch (2-3 cm) of slack in each of the straps at this time. Route the tie-down
straps away from any hot or rotating parts.
Refer to Figure 6-5 and Figure 6-6 for suggested tie down methods. The positioning of the
straps ultimately depends on the configuration of the anchor points. Follow these
guidelines to determine the best method. The use of wheel chocks without straps is
discouraged.
Two straps should be placed from the rear center of the vehicle (preferably on the axle or
differential) straight back or at a slight angle to the rear anchor points (Item 1). These are
the power straps that will hold the vehicle in place. For high power vehicles, the more
straps the better.
Two straps are placed on the drive axle end of the vehicle (i.e. rear of a rear wheel drive
vehicle, front of a front wheel drive, both ends on AWD dynos) and crossed over to the
widest anchor point on the opposite side (Item 2). These straps will prevent the vehicle
from wandering off the rollset (very important on front wheel drive vehicles).
Two final straps are placed at the front end of the vehicle to anchor points directly in front
or at a slight angle in front of the vehicle (Item 3). These straps will keep the vehicle from
moving backwards off the rolls. On AWD dynos the crossed straps will serve this purpose
as well.
On AWD dynos with an adjustable wheelbase, leave the straps slightly loose while moving
the front roll under the vehicle.
Figure 6-5
AD-11
Rear Wheel Drive
1
2
3