ZENE High Performance Brushless Motor Modification QA

ZENE High Performance Brushless Motor Modification QA

What motivated us to redesign the LEGO differential? Why is the differential so important to high-performance LEGO sports performance? Here we need to start with some of the problems we encountered.

  • Accuracy issues: LEGO differentials are limited in accuracy due to part manufacturing limitations, which may not be ideal in some applications that require high precision.
  • High-speed toothing problem: Lego materials lack the strength and precision to rotate with high accuracy at high speeds, which results in gear toothing.
  • Load Capacity: LEGO differentials are generally designed for lightweight models, so they may not be suitable for some heavy-duty applications.
  • Friction and Durability: Friction can reduce efficiency, and parts can wear out over time, affecting differential life.
  • Specific Use Restrictions: LEGO differentials are generally of a general purpose design and may not necessarily be suitable for all specific engineering or mechanical applications.

     

    Some common questions - Differential part

    Is the product a complete set or a separate accessory?

    Answer: Currently we provide two types of products

    1. Complete modification package for LEGO Technic 42143, 42156, 42096
    2. Accessories part,
    3. a) Independent differential, available in square, H-shaped, single-input, double-input types. Please refer to the figure below for dimensions (compatible with LEGO unit proportions)

     

    ZENE High Performance Brushless Motor Modification QA
    figure 1

    ZENE High Performance Brushless Motor Modification QA
    figure 2

    ZENE High Performance Brushless Motor Modification QA
    figure 3

    ZENE High Performance Brushless Motor Modification QA
    figure 4

    b) Drive axle, alloy 1:10, 23801 & 11950

    c) Drive axle, nylon 1:8 23801

    d) Small set of differential + motor + planetary reducer + ES + drive axle + metal shaft + universal joint. The motor is a 2445 brushless motor and supports 2S (7.4v), 3S (11.1V) model aircraft batteries.

    Compatible with "LEGO"/RC output

    Answer: Yes, there are two ways of output, cross-shaped or square metal output shaft, with U-shaped universal joints with holes on both ends, fully compatible with your Lego. (Many thanks to @FriedlS for the HD shot)

    ZENE High Performance Brushless Motor Modification QA
    figure 5

    ZENE High Performance Brushless Motor Modification QA
    figure 6

    This metal differential gear ratio:

    Answer: 1.65:1

    Does the U-joint have a LEGO shaft hole on one end? What is the difference when used without a U-joint? Or do they accept metal (hexagonal) shafts?

    Answer: Yes, this universal joint has a lego shaft hole on both sides, just like CaDa's metal universal joints.

    How deep is the U-joint at the differential input? How far away will the turning point be?

    Answer: The bending point of the U-shaped universal joint is located outside the differential output, and the shafts can be connected in a consistent manner. The size of the differential can be considered to be the overall size and will not affect other designs of the structure.

    Why do differentials come in black and white, are they the same?

    Answer: The material is the same, the only difference is the color. Colors are generally sent randomly. If you have a request, please let me know.

     

    Motor and planetary reducer part

    Does the motor have a housing to attach it to the LEGO part?

    Answer: Yes, the motor is currently connected to a planetary reducer. The reducer housing has enough holes for fixing to the chassis structure. Refer to the red arrow mark in Figure 7 for fixing to the differential and match the points in Figure 8. The blue latch, the blue arrow in Figure 7 connects to the metal shaft with the middle arrow in Figure 8 for power output.

    ZENE High Performance Brushless Motor Modification QA
    figure
    7

    ZENE High Performance Brushless Motor Modification QA
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    8

    Not sure what "bearing drive shaft" means, any ideas? Is that the hub?

    Answer: The general Lego drive axle is a combination of 11950+92909 parts. The bearing drive axle is a combination of 11950+stainless steel specially customized 92909 parts. It has built-in ball bearings, which has better part strength and smaller friction. The service life is increased hundreds of times. (1:10 bearing transaxle cannot be linked with Lego wheels)

    What is the reduction ratio of the planetary reduction gearbox?

    Answer: The reduction ratio of the planetary reduction gearbox (i) is 1:4. Since the maximum speed of the matched 2445 motor can reach 50,000 rpm, the maximum speed after deceleration is 12,500 rpm.

    What are the parameters of the 2445 brushless motor used?

    Answer: 2445 brushless motor, 3600kv, maximum speed 50000, maximum voltage 13.2v, please refer to Figure 9 below

    ZENE High Performance Brushless Motor Modification QAfigure 9

    Other questions

    Transaxle rotation resistance problem

    Answer: There will be some resistance to initial rotation, and after running for a period of time the resistance will reduce to normal ball bearing levels. The parts are all glued/screwed together nicely so the wheels won't come off unless something breaks.

    What is the remote control and is it sold separately?

    Answer: The commonly used 2.4G radio remote control RC gun handle and receiver with light control support one-handed operation (controlling direction, acceleration and deceleration). The remote control distance is stable within 400 meters. In addition, the receiver has a built-in gyroscope. , you can manually turn on the gyro mode to assist drift control.

    If you need to purchase this part separately, please contact us.

    What model is the battery and is it sold separately?

    Answer: For general model aircraft lithium batteries, it is recommended to use 2S, which has sufficient power. 3S is a bit violent. There is no sales at the moment, please contact us individually if necessary.

    About the lights of 42143, 42156, 42096

    Answer: This kit comes with special lights that are compatible with the remote control. Some of the lights can be directly controlled manually using the same remote control handle, while other parts are automatically controlled. For example, the taillights will automatically dim and brighten according to the amount of the accelerator.

     

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