Brushless Motor with Pinions for HM165: Install and Gear Guide
By BEZGAR | Published: 2026-11-03
Category: Guias Práticos
Swap the brushless motor in your BEZGAR HM165 with the original spare part. Follow this step-by-step install and pinion fitment guide to avoid mesh and alignment mistakes.
Quick answer
Use the original BEZGAR Brushless Motor with Pinions for the HM165 (part numbers M16111, M16035, M16019) and install it by setting pinion mesh before tightening the motor mount. Check gear backlash by hand before you reconnect the battery.
Why the HM165 needs the correct brushless motor and pinions
The HM165 motor mount and spur gear are designed around the original brushless motor and its matching pinions. A motor with a different can length or shaft size may not sit flush in the mount, and a pinion with the wrong tooth count or pitch will either bind or strip the spur gear. The supplied part numbers M16111, M16035, and M16019 identify the correct replacement set for this model.
If you are considering an aftermarket motor, verify shaft diameter, mounting hole spacing, and pinion pitch against the original before buying. The catalog does not list those dimensions for this motor, so measure your existing part or compare it side by side rather than guessing.
What to check before you start the swap
A clean work area and a few basic tools make the job faster: a hex driver set, a small flathead screwdriver, and a toothpick or small brush for threadlocker. Take a photo of the motor wiring before disconnecting anything, because the three brushless leads must go back to the same terminals on the ESC.
Inspect the spur gear for worn or missing teeth while the motor is out. Installing a fresh motor against a damaged spur gear will shorten the life of both parts.
HM165 brushless motor and pinion install steps
- Disconnect the battery and remove the old motor: Power off the car, unplug the battery, and disconnect the three motor leads from the ESC. Remove the motor mount screws and slide the old motor out. Common mistake: pulling the leads by the wire instead of the connector, which can tear the solder joint. Photograph the lead order before disconnecting so the new motor goes back the same way.
- Fit the pinion to the new motor shaft: Slide the correct pinion from the supplied set onto the motor shaft and align its set screw with the flat spot on the shaft. Tighten the set screw firmly. Checkpoint: the pinion should not wobble or spin independently of the shaft. If the pinion does not seat fully, stop and confirm you are using the matching pinion from the set rather than forcing it.
- Mount the motor loosely and set gear mesh: Install the motor in the mount but leave the mount screws snug enough that the motor can still pivot. Slide a strip of paper between the pinion and spur gear, press the motor into the spur, and tighten the screws. Remove the paper and rotate the spur by hand. Common mistake: overtightening the mesh so the gears whine or bind. A small amount of backlash at each tooth is correct; zero play will overheat the motor and wear the spur.
- Reconnect the motor leads and test direction: Plug the three leads back into the ESC in the original order. Lift the car so the wheels are off the ground and apply a small throttle input. If the motor runs backward, swap any two of the three leads. Checkpoint: the car should move forward when you apply forward throttle. Never test with the car on the ground first; a reversed motor can send the car into a wall.
- Run a short low-speed check and recheck mesh: Run the car slowly for one or two minutes, then stop and feel the motor and spur gear temperature. Recheck the pinion set screw and motor mount screws for looseness. Common mistake: skipping the recheck after the first run, which is when new parts often settle. If the motor or spur is too hot to touch comfortably, stop and readjust the gear mesh before running again.
Product facts
- Brushless Motor with Pinions for HM165: Original spare part designed specifically for the HM165, supplied with motor and pinions (part numbers M16111, M16035, M16019). Using the model-specific motor and pinion set removes the guesswork of matching shaft size and gear pitch to the HM165 drivetrain.
Brushless Motor with Pinions for HM165
