RC Snowmobile

thingiverse

Fully functional, 3D-printed RC snowmobile with working suspension, surprisingly stable on snowy terrain. Despite impressive performance, issues arise when attempting high jumps due to fragile front control arms. This ambitious build demands advanced CAD skills for motor mounts and custom parts, as well as RC expertise for optimal motor setup and gearing calculation. Beyond plastic components, the project requires: RC essentials like a transmitter and various motor controls Motor, speed controller, and transmission between motor and drive shaft 5x150mm steel rods for steering axles (cut to fit) 4x400m steel rods for remaining axles, including shock absorbers, suspension, and drive shaft (cut to fit) 4pc Springs with inner diameter 7mm and ~17mm length for shock absorber suspension adjustment 6pc Ball bearings 8x4x3mm for drive shaft, upper wheels, and big lower wheels Stiff 2mm wire for wear rods under the skis M3 screws with nuts for securing components Set screw shaft collars (4 & 5mm) or equivalent The chassis is bonded using hot glue, while bearings are secured with M3 screws. Steel rods feature set screw shaft collars for easy installation. The seat is held by magnets at the rear and can be easily removed to access the battery. Power plant and gearing require attention; a recommended configuration includes a hobbyking 36mm 550w inrunner motor with toothed pulleys, achieving a gearing ratio of 9:42. However, this setup proves overpowered and heavy. A smaller high-torque engine is suggested for better balance. For further questions or clarification, please provide details and I will update the information accordingly. Print Settings: Printer Brand: RepRap Printer: Mendel Rafts: Doesn't Matter Supports: Doesn't Matter Resolution: 0.3 Notes: A resolution of 0.3 was used to achieve a lacy finish; 0.1 is recommended for an improved finish. Support structures are necessary at the front half of the chassis and rear suspension runner. ABS users may experience warping issues; Kapton tape and glue were employed to prevent this. PET plastic is considered ideal for this project. The track was printed using Ninjaflex Shore 85A, with other flexible brands yielding similar results. No support structures were used for the track. Post-Printing: