Fiesta Products 7305 Motor and Gearing, Pinion Gear Installation Instructions, Motor Installation

Page 22

Gearing Compatibility Chart

The chart on the left shows a full range of gear combinations. The stock ratio for is shown in green. The gear combinations in red are not suitable when using the included 6-cell battery, speed control and motor. These gear combinations have been included in this chart as they may be used with certain other aftermarket equipment combinations.

Spur Gear

 

45

50

55

 

 

 

 

16

-

-

17.33

17

-

-

16.31

18

-

-

15.40

19

-

-

14.59

TUNING ADJUSTMENTS

MOTOR AND GEARING

Extensive testing has been done to determine the best gear ratio for your model. The stock gearing balances power, speed, and efficiency to optimize the performance of the model. However, you may wish to try different gear ratios in order to customize the performance of your model. The gearing chart on this page shows appropriate gearing for the model.

By installing a pinion with fewer teeth, or a spur gear with more teeth, the transmission’s final drive ratio is increased. This means greater rpm is required to achieve a given speed. Using a numerically higher gear ratio will increase torque, but reduce top speed. Installing a pinion with more teeth, or a spur gear with fewer teeth, will decrease the final drive ratio, which

Pinion Gear Installation Instructions

1.Remove the motor as described previously in Motor Installation.

2.Use a 1.5mm wrench to loosen the pinion’s set screw. Remove the pinion.

3.Place the replacement pinion gear onto the motor shaft. Align the set screw hole with the flat side of the shaft.

4.Thread a 1.5mm set screw into the pinion gear but do not tighten it yet.

5.Slide the pinion gear down the motor shaft so the wrench shaft fits into the notch in the motor mount, as shown. Tighten the set screw.

 

20

-

-

13.86

 

21

-

-

13.20

 

22

-

11.45

12.60

 

23

-

10.96

12.05

Gear

24

-

10.50

11.55

25

-

10.08

11.09

Pinion

26

8.72

9.69

10.66

27

8.40

9.33

10.27

 

28

8.10

9.00

9.90

 

29

7.82

8.69

9.56

 

30

7.56

8.40

9.24

 

31

7.32

8.13

8.94

 

32

7.09

7.88

8.66

 

33

6.87

7.64

8.40

 

34

6.67

7.41

8.15

 

35

6.48

7.20

7.92

 

36

6.30

7.00

-

 

37

6.13

6.81

-

 

38

5.97

6.63

-

 

39

5.82

6.46

-

 

40

5.67

6.30

-

 

41

5.53

-

-

 

42

5.40

-

-

 

43

5.27

-

-

 

44

5.15

-

-

 

45

5.04

-

-

 

46

-

-

-

 

Stock

 

 

 

 

 

 

 

 

Usable range

 

 

 

 

 

will generally increase top speed but reduce torque. However, installing too large a pinion will “overgear” the model, which will reduce performance and may overheat the motor and speed control. Use the following formula to calculate the overall ratio for combinations not listed on the gear chart:

# Spur Gear Teeth

x 5.04 = Final Gear Ratio

# Pinion Gear Teeth

 

Motor Installation

To access the motor, remove the gear cover by removing the single screw on the top of the gear cover. The motor uses an aluminum mount for quick, easy motor access and gearing adjustment. To remove the motor, first open the right battery

door and slide out the ESC. Next, remove the single large hex screw using the supplied 2.5mm wrench. Then rotate the motor and mount to the side of the model, and slide backward off the post.

Adjusting Gear Mesh

Incorrect gear mesh is the most common cause of stripped spur gears. Gear mesh should be checked and adjusted anytime a gear is replaced. Access the gears by removing the single screw on the top gear cover.

To set the gear mesh, cut a narrow strip of notebook paper and run it into the gear mesh of the motor. The motor is mounted to an aluminum motor mount. Loosen the single motor mount screw with the provided 2.5mm wrench to slide the motor mount. Slide the motor and pinion gear into the spur gear. Retighten the motor mount screw and then remove the strip of paper. You should be able to run a fresh strip of paper through the gears without binding them. Gear mesh can be checked visually by removing the gear viewing port cover.

Motor Mount

Screw

Do Not Loosen

Dual batteries with parallel connector only

Requires aftermarket 540 motor to fit

Not recommended with stock ESC, motor and batteries

Does not fit

Gear Viewing Port

Cover Removal

22 • TRAXXAS

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Contents Model Traxxas Support IntroductionQuick Start Support Before YOU ProceedTraxxas Important Points to Remember Safety PrecautionsBatteries and Battery Charging Speed ControlSupplied Tools and Equipment Required Equipment TOOLS, Supplies and Required EquipmentDecorating Your Model Applying the DecalsAnatomy of the Model Battery Door Release Tab Compartment Vent Steering ServoToe Link Push Rod Rear Body Mount Rocker Rear Half Shaft Quick Start Getting UP to Speed TQ Transmitter Radio System Wiring DiagramTraxxas TQ Radio System XL-2.5 Electronic Speed ControlRadio System Terminology Channel radio system The TQ radio system, consistingCharging the Battery Pack Installing Transmitter BatteriesSetting UP the Antenna Locate the black antenna wire that exits the receiver boxBattery Installation Installing Battery PackTraxxas High Current Connector Using an Additional Battery Pack for Increased Run TimeTQ Radio System Adjustments TQ Radio System ControlsTQ Radio System Setup RANGE-TESTING the TQ Radio SystemTransmitter should be adjusted as follows Adjusting the Electronic Speed ControlTransmitter Adjustments for the electronic speed control ESC OperationESC Profile Selection Selecting Sport Mode Profile #1Selecting Race Mode Profile #2 ESC Profile DescriptionDriving Your Model Running in WET ConditionsConfirm that your batteries can be used in wet conditions Motor PrecautionsBefore Running Your Vehicle in Wet Conditions After Running Your Vehicle in Wet ConditionsAntenna wire B Apply a small bead of silicone grease Removing and Installing Radio GearReceiver Installation Removing the ReceiverVehicle’s ride height Tuning AdjustmentsSuspension Tuning Shock OilAdjusting Toe-In Static Camber AdjustmentStatic Camber Base Factory Settings Negative camberTransmission Tuning Wheels and TiresAdjusting Gear Mesh Pinion Gear Installation InstructionsMotor Installation Motor and GearingInspect the vehicle for obvious damage or wear. Look for Other periodic maintenanceMaintaining Your Model StorageModel

7305 specifications

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