# MatCat RC Car This is the official repository for the MatCat RC Car, an RC car designed to be 3D printed. I designed this car primarily as an exercise to improve my modeling skills, but also because I wanted a cool RC car to play with! The RC car is designed to be an all-purpose RC vehicle, the initial model is a rear wheel drive double wishbone suspension vehicle designed primarily for 'on road' driving, though a 4wd model is planned as well. The car is completely designed from scratch for 3D printing, the only non-printed parts are metric screws, ball bearings, and electronics. The vehicle is roughly 1:7 scale based on vehicle width compared to average vehicle widths, this would make this vehicle roughly on par with a small compact vehicle in scale. Please note any and all specificaions are subject to change as this is a work in progress. ## Specifications |Specification | Value | |---|---| | Scale | 1:7 | | Wheelbase | 259mm (10.2") | | Width | 247mm (9.7") | | Length | 359mm (14.1") | | Empty Weight (no battery) | TBD | | Curb Weight | TBD | | Stock Wheel size | 72mm diamater by 27mm width | | Differential Ratio | 1.714 (7:12) | | Transmission | Direct Drive, a gear box is planned with an initial 8:1 gear set | | Motor | Random brushless motor from my parts bin, probably a 2200KV | | ESC | Cheap 60A ebay / amazon ESC rated 2-3 cell | | Steering Servo | Cheap 9G micro servo, probably not big enough, will change out if needed | | Battery | 3S 2200mAh LIPO | ## Parts ### Chasis #### Rear Chasis #### Mid Chasis #### Front Chasis #### Bumper Frame ### Suspension #### Rear Left Lower Arm #### Rear Right Lower Arm #### Upper Arm #### Front Left Lower Arm #### Front Right Lower Arm #### Front Left Upper Arm #### Front Right Upper Arm #### Shock Piston #### Shock Tube #### Shock Head #### Shock Washer ### Drivetrain #### Motor Joint #### Primary Drive Shaft #### Rear Axle Drive Shaft #### Rear Axle Joint #### Rear Wheel Hub Housing #### Rear Wheel Hub #### Front Left Wheel Hub Housing #### Front Right Wheel Hub Housing #### Front Wheel Hub #### Wheel Lock Nut #### Rear Differential ##### Primary Housing ##### Cover ##### Drive Gear (7 tooth) ##### Drive Joint ##### Inner Gear Housing (12 tooth) ##### Axle Gear ##### Slave Gear ##### Left Axle ##### Right Axle ### Steering #### Steering Yoke #### Steering Arm #### Servo Arm ### Hardware