Hitec RCD LYNXSP2A75 75 MHz Remote Control Transmitter User Manual users instructions

Hitec RCD Inc. 75 MHz Remote Control Transmitter users instructions

users instructions

1CONTENTSINTRODUCTIONLAY-OUT DIAGRAMFEATURES AND SPECSSETTING AND OPERATION1. TRANSMITTERa. Loading batteries:b. Reading the LED Battery Indicatorsc. Recharging NiCad Batteriesd. Transmitter Antennae. Changing X-Tals2. Installation of Receiver and Servosa. Using separate power source for the receiverb. Battery Eliminator Circuitry (B.E.C.) with Mechanical Speed Controlc. Connection with Electronic Speed Control3. Transmitter, Receiver and servo settingsa. Checking operation of the servo - Steering Servo Settings - Steering servo trim settingb. Throttle Servo Settings - Using Mechanical Speed Control - Using electronic speed control - Using throttle servo for Gas powered vehicles
2INTRODUCTIONThank you for purchasing the LYNX Sport 2 Channel FM Radio System. The LYNX SportRadio is made of high quality, technically advanced components designed to achieve topperformance from your RC vehicle. Team up with Hitec Racing and see that quality andperformance doesn’t have to cost a fortune!LAY-OUT DIAGRAM(Illustration)
3FEATURES AND SPECS* Pistol Grip 2 Channel AM Proportional System* Servo Reversing Switches (Both Channels)* 2 L.E.D. Battery Status Indicator* NiCad Battery Charging Jack* Power Output : 500mW* Current Drain : 180 mASETTING AND OPERATION1. TRANSMITTERa. Loading batteries: You may use either Alkaline or NiCad “AA” size batteries.* Push the bottom battery cover in the direction of the arrow then lift up the cover * Load 8 AA batteries (Be sure the polarity is correct)* Reinstall battery cover * NiCads should be charged with CG-25 charger for aproximately 12 hours before useb. Reading the LED Battery Indicators * Normal: Green * Warning: Flashing RedWith new alkaline or freshly charged nicads the Green light should be brightly lit; as thegreen light starts to fade the Red begin illuminate and eventually light completely as thegreen light goes out. Once this occures, operation should be stopped immediately, and thebatteries should be recharged or replaced. (Warning: Recharge nicads batteries only.Alkaline batteries can not be recharged)c. Recharging NiCad BatteriesThe LYNX Sport is equipped with an external charging jack so there is no need to remove thebatteries from the transmitter to charge them. The Hitec CG-22 or 25A can be used to chargethe batteries overnight, or for approximately 12-15 hours. Please refer to the followingdiagram, check to see that the charge lights lit after the connection is complete.d. Transmitter AntennaAlways make sure your antenna is attached before use or you operating range will be greatlyreduced and could result in damage to your vehicle and or injuries to yourself and others.e. Changing X-TalsChanging X-Tal to avoid conflicts with other vehicles is possible where permitted.(You mustcheck your local rules before doing so. For example in the US the FCC prohibits the changingof transmitter X-Tals on 72 and 75mhz) . If you are eligible to change X-tals both thetransmitter and receiver X-tals must be changed together. You must change within the sameband, i.e. 75 MHz to 75 MHz , 27 MHz to 27 MHz, different bands can not be intermixed ifyour radio is on 75 MHz then 27 MHz X-tals cannot be used. Use only Hitec X-tal whenchanging frequencies.
42. Installation of Receiver and Servosa. Using separate power source for the receiverWhen using a separate power pack for the receiver instead of sharing the main power sourcefor running , please refer to the following diagram. After installation, turn on the power to thetransmitter first then turn the receiver on (Warning: Always turn the transmitter ON first andOFF last to prevent your vehical from running away.) This will prevent the receiver frompicking up stray signals and going out of control. Now, move the controls to see if the servosare moving properly. If not, check your wiring or X-tals if the servos do not move at all.(Illustration)3. Battery Eliminator Circuitry (B.E.C.)The Battery Eliminator Circuit allows the user to power the receiver from the main powersource for the motor. Most cars that use B.E.C. will have a plug coming off the mechanicalspeed control. This plug is connected to the switch harness and then plugged directly in to thereceiver Batt/BEC slot. (Warning control may be lossed as the battery dies and the voltagedrops below the operating voltage of the reciever but still has enough power to sun themotor) To be safe do not run the motor battery completely dead, stop it as it starts to slow.4. Connection with Electronic Speed ControlElectronic Speed Control such as the Hitec HFX has a built in B.E.C. system inside the speedcontrol circuit. Plug the receiver connector from the speed control into the “THROTTLE” or#2 channel on the receiver, and the steering servo into the “STEERING” or #1 channel on thereceiver. Now you can connect the main power to the speed control and when the powerswitch is turned on the speed control will regulate the power that the receivers can use.
55. Transmitter, Receiver and servo settingsNow we come to the critical part as proper installation of these three main components isessential.a. Checking operation of the servo* After installation of the servo and receiver into your model is complete, turn the power“ON” the transmitter (fully extend the antenna) now turn on the receiver. (It is advisableto remove the pinion gear from your car so that the wheels do not engage for this test)* Check to see if both servos and/or speed control are working properly. If not check theconnections and/or make sure the main battery pack is charged.* Check to see if the servos are moving in the correct direction. If not, change the servoreversing switch located on the top of the transmitter to achieve the correct direction.* If everything checks out then turn the receiver “OFF” first, then the transmitter(Always remember Never have the receiver “ON” with out the transmitter being “ON” thismeans when turning you model “ON” always turn the transmitter “ON” first and “OFF”last)Warning!!! : Do not shorten the length of the receiver antenna by cutting off any excesswire this will severely affect the operating range and could result in injury to yourself andothers.
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7b. Steering servo trim settingAfter verifying that the steering direction is correct, then set the steering trim knob tothe center if the servo horn or arm should be at 90 degrees and the wheels should bestraight. If not then make the horn or arm 90 degrees by removing it and replacing itcorrectly. If the arm is at 90 degrees and the wheels are not straight adjust the linkageto compensate. Once you’ve got these two setting correct the use the steering trim forfine tuning. Note: (Always Trim your car before you run or race) This is a commonmistake made by beginners, if you have to steer your car to go straight, you arefighting a loosing battle. Make sure it goes straight before you run and driving willbecome much easier.c. Throttle Servo Settings- Using Mechanical Speed Control
8Adjust the servo link rod so that point ”B” will come to the neutral position. Alsowhen the trigger is pulled to the maximum point “C” should be as illustrated and atpoint “A” when the trigger is pushed to the limit. Check to see if the vehicle movesforward when the trigger is pulled. If the vehicle moves backwards then the “Throttle”reversing switch will need to be switched. If the model moves forward or reverse atthe neutral position then use the throttle servo trim to fine tune. If the servo moves thespeed control farther than is needed you will need limit the travel by moving thelinkage into a different mounting hole on the horn, closer to center will give lesstravel and further from center will give more travel.- Using electronic speed control* Set the throttle trim in the center the adjust the ESC neutral point then the trim canbe used for fine tune adjustments. Hint : Set a little drag brake in cars that are Understeering into the corners, andno drag brake or a little “creep” for cars that Oversteer into the corners. Thismeans the car will “creep “ forward when the throttle is neutral, so you must pushthe trigger forward to keep the car from moving when stopped. This can only bedone with forward only electronic speed controls, and is used in 4 wheel drive sedancars quite frequently to allow them to carry more speed into and through thecorner.
9(Illustration)* Adjust the full power position of the ESC (forward only) when the trigger ispulled approximately 90% of the way. If the vehicle does not move forward whenthe trigger is pulled and does when the trigger is pushed, check the motorconnection first, if that is correct then switch the “throttle” reversing switch tocorrect.* Adjusting the full power position of the ESC (Reversible version) is the same asthe forward only version, except you must make sure you are adjusting the forwardnot the reverse. If the trigger is pulled and the full power adjustment does not effectthe speed but does when the trigger is pushed, the servo reversing switch for the“throttle” needs to be switched. After this is determined, use the same 90% asdiscussed previously for forward. Reverse on most speed controls is not adjustable.(Illustration)- Using throttle servo for Gas powered vehiclesGas powered vehicles require the throttle servo to be set up to operate the carburetor and thebrakes together. The position of the control horn in the horn will determan the amount oftravel, this must be set up properly to get the proper throw for the throttle and brakes. Setupsare different for individual applications so consult the manufactures manual for the proper setup procedure.

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