Mecha-style portable spinning bike

Sedentary lifestyle is an "invisible killer" for men's health, especially for office workers who sit for long periods, exercise time is even scarcer

Is there no way to exercise while sitting

For this, I specially designed this portable exercise bike - allowing you to exercise easily while working

This exercise bike features a mecha-style design, exuding a strong sense of technology

Its specific dimensions are 564mm long × 522mm wide × 420mm high, weighing only about 3.7 kilograms, highlighting its portability

Regarding materials, the main body is made of PETG, the gears are made of ABS, and the anti-slip shock-absorbing pads are made of TPU, balancing both durability and practicality

The core planetary gear set adopts a herringbone gear design, which effectively reduces operating noise, prevents gear set deviation, and enhances transmission stability

It not only enables efficient leg exercise but also features convenient mobility, adapting to the exercise needs of sedentary office scenarios

The core of this exercise bike is equipped with planetary reduction gears, which drive the external gears to rotate when pedaling, and after two stages of acceleration, drive a 1:48 geared motor to operate

Utilizing the reverse power generation principle of the geared motor, the generated current is supplied to the LED light; the faster the cycling speed, the greater the power generated, and the LED light brightness increases synchronously

The interactive light feedback design makes the cycling process more interesting and immersive

Any product inevitably has shortcomings in the initial design phase, and even aerospace engineering is no exception; excellent products are often refined through repeated iterations. This exercise bike V1.0 version currently has one point that needs optimization: the external gear module is too small, and due to the limitations of 3D printing accuracy, gear slippage occasionally occurs when transmitting power to the geared motor for electricity generation. The corresponding solution is to increase the external gear module to above 2, which will enhance gear meshing stability and effectively avoid slippage problems caused by printing accuracy

This time, Cai Duo Wu filament was used

PETG:

ABS

PLA