40
k) Function check of servos
Steering servo
The steering servo is connected to channel 1 of the remote control, i.e. to
the steering control wheel.
Construction of steering
The steering of the vehicle is designed as an axle leg steering.
The steering knuckle arms are connected with the three-part steering
link. The pivoting movement of the servo control lever is transmitted via
the steering linkage (1) to one arm of the servo saver (2). The servo
saver consists of two levers at a 90° angle to each other, which are not
rigidly coupled but can be moved against each other via a spring on a
level with the steering linkage.
The second lever arm of the servo saver (3) steers the centre part of the
steering link, i.e. the steering plate, and in this way causes the wheels to
turn via the steering link (4). When hard shocks are transmitted from the
wheels into the steering link during operation, they are not immediately
transmitted to the steering servo, but are absorbed by the resilient
connection of the two lever arms of the servo saver.
The steering angle to the right and the left is limited by a mechanical stop of the steering arm against the axle leg support.
Function check
• Support the model at the front so that the wheels hang freely.
• Due to the wheels' good grip and the weight of the vehicle, the wheels will not directly respond to the remote control if the vehicle is on the ground. The
response is as it should be when driving.
• First switch on the transmitter, then the receiver.
• Move the steering control wheel (channel 1) to the right and the left.
• The wheels must turn to the right and the left!
• If the wheels turn in the opposite direction, switch the servo reverse on the remote control to the "REV" position (reverse).
• Release the steering control wheel. The wheels must turn back to straight-drive position. If the wheels do not exactly assume straight-drive position when the
steering control wheel is in neutral position, adjust the trim on channel 1. The end points of the steering control wheel should cause the steering to fully go to
the right/left!
Servo saver
The servo saver has already been pre-adjusted. Before first use it has to be checked and might have to be set tighter (so that the control commands
of the steering servo are carried out when driving quickly).
Throttle/brake servo
The throttle/brake servo is connected to channel 2 of the remote control.
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