Replacing a bad 750 brushed motor is nothing rocket science. It works just like a regular 550 except for the bigger size. Before doing the replacement, first connect the motor wires to a new motor and see if this is truly a motor issue. If the ESC runs fine with a new motor, then it […]
Month: May 2022
RCPRESS Techtip: average lifespan of brushed motor in RC boat
This example shows a tunnel hull configuration but the information applies to all hull types. One biggest problem with RC boat is heat dissipation. The inside of the boat has to be completely sealed for water proofing, therefore heat can hardly go away. Even though there is water cooling coil surrounding the motor casing, modern […]
RCPRESS techtip: signs of steering servo failure
The video here shows signs of a dying servo. When you see the steering shaking like that, chance is that a servo replacement is necessary.
RCPRESS Techtip: onroad steering issue caused by wheels
Different tracks have different road surface conditions. Different tires can have different effects on steering, which will always require field testing to find out. These photos show two sets of front wheels. Those taken apart offer very poor steering angle for unknown reason… Therefore, always bring along different tires when trying out new tracks. The […]
RC techtip: powerful 380/390-class motor
380 class motor is popular among smaller RC cars and boats. However, 380 is easier to get overheated and is less capable torque-wise. 390 is longer and has more torque. 390 is increasingly used but there are just too many variations. Some will not deliver anything meaningful unless under 12V or 3S, which is not […]
RCPRESS Techtip: diff lock at the rear
This video shows a Tamiya Blazing Star with a diff lock applied at the rear diff. As you can see here, when the rear diff is locked, turns can be real sharp but on the “inner” side of the turns the wheels tend to lift up thus losing traction.
Techtip: TA01 VS TA02 – how to quickly tell the difference?
The 01 has the ESC power switch mounted on the left whilst the 02 has it on the right. Also, the 02 battery compartment is closed on the right side. Not so for 01. Keep in mind, not all parts are interchangeable between the two.
RC techtip: car forward flipping
In this video, you can see a Tamiya big wheeler flipping forward when braking. The problem is with the front suspension shorting – either the front damper springs are too stiff, or that the front dampers are too short and that suspension travel is insufficient. As you can see from the photo below, the dampers […]
RC Techtip: brushed RC car losing control
When your brushed RC car exhibits a strange behavior where it will lose control randomly everytime after a short run, 99% of the time it is the motor that is causing troubles. The motor is wearing out or is under stress thus dragging too much from the ESC. This is quite common on modified motor. […]