DIY How to Replace Traxxas Titan 12T 550 Motor Engine Remove & Install

Published on August 25, 2018
Duration: 5:38

This guide details the process of replacing a Traxxas Titan 12T 550 motor in various Traxxas 2WD models. It covers removing the old motor, transferring the pinion gear, installing the new motor, and crucially, setting the correct gear mesh between the pinion and spur gears to prevent damage. The importance of threadlock for reassembly is also highlighted.

Quick Summary

To replace a Traxxas Titan 12T 550 motor, first disconnect the battery and motor wires. Remove the motor cover, then the pinion gear. Unscrew and remove the old motor. Install the new motor, transfer the pinion gear, and critically, set the gear mesh using the motor's pivot adjustment. Use threadlock on screws for reassembly.

Chapters

  1. 00:00Introduction and Overview
  2. 00:15Preparation: Body Removal and Battery Disconnect
  3. 00:26Disconnecting Motor Wires
  4. 00:39Removing Motor Cover Screws
  5. 00:52Motor Cover Removal
  6. 01:06Identifying Motor Mounting Screws
  7. 01:11Removing the Pinion Gear
  8. 01:36Removing the Old Motor
  9. 01:50Installing the New Motor (Initial Placement)
  10. 01:55Understanding the Adjustment Screw
  11. 02:01Setting Gear Mesh (Lash)
  12. 02:53Reinstalling the Pinion Gear
  13. 03:17Tightening the Pinion Set Screw
  14. 03:25Paper Trick for Gear Mesh Adjustment
  15. 04:00Consequences of Incorrect Gear Mesh
  16. 04:16Tightening Motor Mounting Screws
  17. 04:23Applying Threadlock
  18. 04:31Reinstalling Motor Cover
  19. 04:37Reconnecting Motor Wires
  20. 04:46Final Steps and Reassembly
  21. 05:04Conclusion and Next Steps (Break-in)

Frequently Asked Questions

What tools are needed to replace a Traxxas Titan 12T 550 motor?

You will need a screwdriver, preferably a short stubby one for easier access to the motor cover screws. An Allen key set, specifically the smallest size provided with your RC car, is required for the pinion gear set screw. Threadlock is also highly recommended for reassembly to prevent screws from loosening due to vibration.

How do you properly set the gear mesh for a Traxxas Titan 12T 550 motor installation?

Set the gear mesh by adjusting the motor's position. The bottom motor screw acts as a pivot. A common method is the 'paper trick': slide a piece of paper between the pinion and spur gears. It should pass through with slight resistance and come out zigzagged but intact. Avoid mesh that is too tight or too loose.

What are the risks of incorrect gear mesh when installing a Traxxas motor?

Incorrect gear mesh can lead to significant problems. If the mesh is too tight, it can cause excessive stress on the motor and gears, potentially leading to overheating or premature wear. If the mesh is too loose, the teeth of the plastic spur gear can strip out when power is applied, rendering the drivetrain inoperable.

Can I reuse the old pinion gear when installing a new Traxxas Titan 12T 550 motor?

Yes, you must remove the old pinion gear from the original motor and transfer it to the new Traxxas Titan 12T 550 motor. Ensure the pinion gear is slid onto the motor shaft and its set screw is tightened against the flat side of the shaft for a secure fit.

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