THIS ONLY CONTAINS DIGITAL FILES FOR 3D PRINTING AND PROGRAMMING

YouTube video coming soon.

I have created a rider that can shift weight side to side just like a real rider would do on a real snowmobile. This kit suits the skeeride 2 polar rc snowmobile, but it can be modified for other models as well. The riders body consists of a battery cage that snugly fits a 2200mah 4s LiPo battery pack. By utilizing the battery as the rider's mass, unnecessary weight is eliminated. A gyro/accelerometer quickly reacts to sudden roll, sending a signal to the rider for immediate stabilization.

The rider is powered by a standard size servo of the short racing type. This ensures quick acceleration. I'm pretty sure you could fit a regular standard size servo too as there should be enough space under the seat cushion.

I bought a snowboard figure from Amazon which i removed the clothes off. The helmet was downloaded from thingiverse, scaled to fit the SkeeRide, and drilled 2x 2.5mm holes for mounting. The arms and legs consist of simple elastic bands tied between the handlebars and the rider's shoes.

An electonics box is also included that replaces the ESC_Mount. This is where the ESP32 S3 Supermini, breadboard, buck converter, receiver, and wires goes. You need some basic experience with microcontrollers and electronics to assemble this mod. The code is ready to be copypasted into the Arduino IDE and uploaded. However, you still need to know how to flash it to the esp32 and wire everything without making a short circuit. It is easy if you already have some experience with this stuff, but many things can go wrong. Important: set the step down to output 5v exact for the esp32. The PID tune should work for every SR2 Polar, but can be optimized for your sled. Otherwise it should already have an ok tune. The gyro and acceleromter clicks in a small sized breadboard, and everything connects with jumpers and cables with pins. A toggle switch is neccessary to prevent current from reaching the receiver when the esp32 is connected to a computer for programming. Wiring diagram is provided. Code can be found in a following link to GitHub.

Additional hardware and electronics needed

• 1x M4x22 screw
• 4x M4x14
• 1x M4 nyloc nut
• 4x M4 nut
• 6x M3x8 screws
• 6x M2.5x5 screws or 6x M2x5 screws
• 4x M2x5 screws
• 1x RC body clip
• Click n play snowboard figure (just the clothes) https://amzn.to/3iWBfar
• Elastic bands for legs

Electronics

• Rider servo: Short standard servo
• Microcontroller: ESP32 S3 Supermini
• Gyro/Accelerometer: BMI160
• Breadboard: Mini size
• Switch: Toggle type
• Jumpers and pin cables
• Regular step down module: LM2596S-type works good
• Receiver: 3 channels is required

Download code here

• https://github.com/abb22axerox/rc-snowmobile-dynamic-weight-control.git

Rc snowmobile files

• https://www.myminifactory.com/object/3d-print-skeeride-2-polar-340752