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Setting the digital drive trim with electronic drive control units
If the electronic drive control has a programming option for the different positions (motor off, full throttle and reverse
drive), you can leave the trim set to 00%.
If the control unit has no programming functions, determine the trim position by rolling your model slightly forwards or
backwards. Then set the trim exactly in the middle between the two positions.
Setting the digital drive trim using a gas servo
Models with a combustion engine:
• Switch on the transmitter and then the receiver.
• Check whether the digital drive trim is in the middle.
• Now mount the servo lever with the carburettor steering linkage on the servo in such a way that the throttle plug on
the carburettor is almost closed in this position (idle position).
• When you move the operating lever for the drive function (see fig. 1, pos. 5) as far as possible towards the transmitter
handle, the throttle valve on the carburettor must be fully opened.
• If the servo runs in the wrong direction, change the rotation direction of the servo on the receiver output 2 (CH2) as
described previously, see chapter 12. d).
• By conducting practical tests, you can now determine the point of the rudder horn at which the you must attach the
carburettor linkage to achieve the best possible opening and closing of the carburettor. While you do this, the EPA
value should be approximately between 100 and 120%. When you are finished, you can change it for fine-tuning.
• When you push the operating lever for the drive function (see fig 1, pos 5) all the way forward away from the handle,
the brake of the vehicle must engage. An adjustment screw at the carburettor prevents the throttle valve from closing
completely. This way the engine will not stall when the brakes are applied. You can adjust the braking function with
adjusting rings and springs and then use the EPA function for a precise fine-tuning.
• Before you start the motor for the first time, set the appropriate function for the throttle plug at the carburettor.
• Using the rocker button "TH.TRIM" (fig 105) you can fine-tune the motor idle. Then re-adjust the throttle controls until
the digital trimming is set exactly in the middle again at optimum idling.
Electric models with mechanical drive control:
• Switch on the transmitter and then the receiver.
• Check whether the digital drive trim is in the middle.
• Adjust the linkage for the mechanical drive control so that the electric motor does not start up when the operating
lever for the drive function (see fig 1, pos 5) is in the central position.
• Using the central servo adjuster, you can conduct a fine-tuning, if necessary, to compensate for mechanical variances
and to ensure a secure shut-down of the motor.
• When you move the model forward and backward using the transmitter, the drive control must faultlessly close the
respective contacts and switch the motor reliably to the correct running direction.
• If the servo runs in the wrong direction, change the rotation direction of the servo on the receiver output 2 (CH2) as
described previously, see chapter 12. d).
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