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
Spur Gear
| 45 | 50 | 55 |
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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 |
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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 | ||
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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
