Quick answer
Replace the turning engine rod on your TX123 with the genuine BEZGAR spare, set both front wheels to a slight toe-in, then fine-tune the linkage until the car tracks straight. The whole job takes about 15 minutes with basic hand tools.
Why the turning engine rod affects more than steering
The turning engine rod links the steering servo to the front wheels, so any bend or worn end changes how the TX123 tracks. A rod that is slightly short or long will pull the car to one side even if the servo is centered.
Because the rod is a fixed-length original spare, you set alignment by centering the servo and adjusting the linkage, not by threading the rod in or out. Check the servo horn and steering arms before you blame the rod.
When to replace rather than adjust
Adjust the existing rod first if the car only drifts slightly and the rod looks straight. Replace it when you see a visible bend, a cracked ball end, or excessive play at the pivot points.
A bent rod can still steer, but it changes toe under load, which makes the car unpredictable on rough ground. If the rod has taken a hard hit, replacement is the safer choice.
Step-by-step TX123 turning engine rod install and adjustment
- Center the servo before removing the old rod: Power on the transmitter and receiver, let the servo settle at neutral, then switch off. Remove the servo horn if it is not already at 90 degrees to the servo case. If the horn is off-center, fix that first; otherwise every later adjustment will fight the servo.
- Remove the old rod and compare lengths: Unscrew the ball ends from the steering arms and lift out the old rod. Lay it beside the new BEZGAR rod to confirm the mounting points match before installing. Do not force a ball end into a tight arm; if it binds, check that you have the correct side and orientation.
- Install the new rod with the wheels straight: Attach the rod to the servo horn and steering arm, leaving the ball-end screws snug but not fully tight. Set both front wheels visually straight ahead. Snug, not crushed: over-tightening ball ends adds drag and makes toe adjustment harder.
- Set a slight toe-in: Measure the distance between the front wheels at the front and rear of the tires. Aim for the front measurement to be slightly narrower than the rear, then tighten the linkage. A small amount of toe-in improves straight-line stability; too much scrubs speed and wears tires.
- Test and fine-tune tracking: Drive slowly on a flat surface and note any pull. Adjust the linkage one turn at a time until the car rolls straight with the transmitter trim centered. Reset transmitter trim to neutral before judging the mechanical alignment.
Product facts
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Turning Engine Rod for TX123: Genuine BEZGAR replacement component engineered specifically for the TX123 model. A model-specific rod removes the guesswork of matching length and fit, so you can focus on centering the steering.
Turning Engine Rod for TX123