Fred Jr. - RC Car

RC Car This is my version of a 3D printed RC car. This design is inspired by the Tarmo5 project by user Engineering Nonsense. I tried to keep as many parts printed as possible. Take a look at the BOM below for the complete list of printed and purchased parts. Approximate Size: Length: 38cm Width: 30cm Height: 12cm Wiring Instructions: The RC car has a simple wiring Diagram with only 5 components. The lipo battery can connect directly to the ESC. The motor wires can connect to the other side of the ESC (If the motor spins the wrong direction, swap two of these wires). The ESC has built in BEC that can be used to power the receiver directly. I plugged the drive motor ESC into channel 3 and the steering servo into channel 1. The receiver channels can be configured on the transmitter if needed. BOM: Below is the list of parts that were needed to complete the RC car. The list is split between the parts that I bought for the build and the printed parts. Printed Parts: All parts were printed in PLA except for 3: 2x CV Joint Extension, 1x Front Bumper Part Name:Amount Needed:Description:Assembly:Front Bumper1Bumper to help prevent damage from hitting anything. Printed in TPU.Front AxleBall Joint4Balls for the steering arms.Servo Holder1Main body to hold servo and lay out steering bars.Wheel Pivot2Pivot point for the front wheels to pivot for left/right steering. Also limits the angle of the front wheels. Wheel Connector2Locking parts to connect wheel and wheel hub.Steering Link1Connect steering assembly to servo.Steering Link 2 (Left)1Steering link that pivots at connection with the servo holder part. Connects steering links 1 and 3.Steering Link 2 (Right)1Steering Link 32Links the ball joints on steering link 2 and the wheel hub.Wheel Hub - Front Left1Interface between wheel, steering link 3, and wheel pivot. Bearings are inserted here (2 each).Wheel Hub - Front Right1Shock Pivot - Front4Pivot joints between the center body and front wheel hubs. The front shocks connect to the bottom pivot on each side.Central Connection - Front 112 plates that connect the 4 shock pivots to the central body. Central Connection - Front 21Central body that connects to the shock arm and spaces out the two plates from “Central Connection - Front 1”.Shock Arm - Front1Arm that connects to the top of the shocks.Center Body1Main body of the car to hold electronics.Central BodyBattery Cover1Cover to contain battery inside the body.Central Connection - Rear 112 plates that connect the 4 shock pivots to the central body. Rear AxleCentral Connection - Rear 21Central body that connects to the shock arm and spaces out the two plates from “Central Connection - Rear 1”.Central Connection - Cover and Motor Holder1Part 1 holds the drive motor in place to interface with the axle gear. Part 2 is a cover to lock in the right side bearing on the rear axle.Helical Gears1Gears between drive motor and rear axle.Rear Axle Connector2CV joint cage that connects the drive axle through the main body.Rear Axle Gear Connector1Connections for large helical gear to rear axle.CV Joint Extension2Extension between the CV joints on the wheels and central body. Printed in TPU.CV Joint & Bearing Cage4Part 1 - ball insert for the CV joints. Part 2 - bearing cage to hold the bearings in the CV joint.Shock Pivot - Back Left2Pivot joints between the wheels and the central body. Locks the wheels in place with the axle.Shock Pivot - Back Right2Wheel Hub - Rear2Interface between wheel and shock pivots. Bearings are inserted here (2 each).Rear Wheel Connector2CV joint cage that connects to the wheel through the wheel hub. Purchased Parts: Total cost of non-printed parts was $281. Part Name:Number Required:Part Description:Link:Item Cost:Drive Motor1D3542 Motor. Link $23Drive ESC1100A Brushless ESC. Link $49Steering Servo125kg High Torque Servo. Link $18Transmitter/Receiver1Flysky FS-I6X transmitter and FS-iA6B receiver. Link $55LiPo Battery13 cell LiPo battery. (I got a 2 pack but you only need one) Link $35Shocks44 pack of RC shocks (80 mm). Link $21Wheels44 pack of 1/10 RC wheels. Link $30699 Bearings10699 Bearings. Link $3.50M6 Ball Bearings16M6 Ball Bearings pack of 100. Link $5M3 Threaded Rod4M3 x 300mm steel threaded rod. Link $19.20M3 ScrewsSee Below$22.20M3 Washers8Washers for M3 screws. Bought in a pack. Link -M3 Nuts66Hex nuts for M3 screws. Bought in a pack. Link -Shock Oil1Used for tuning the shock absorbers. Link - M3 Screw List: Screw Size:Amount Used:Location:Link:M3 x 654x Battery Case, 1x Servo Horn Link M3 x 884x Motor, 4x ESC, M3 x 1284x Shocks (Bottom), 2x Steering Bar, 2x Rear Shock BarM3 x 1452x Front Shock Bar, 2x Outer Pivot Balls, 1x Motor Holder (Underside)M3 x 1644x Shocks (Top)M3 x 2042x Rear Axle Cover, 2 Inner Pivot BallsM3 x 30244x Wheel Connection, 16x Shock Pivots, 2 Steering Pivot, 2x Wheel Pivot Link