spot-v1

Description

A fast and reliable 4WD 3D-printable RC car design

Milo (WIP)

Track & Field pacer designed to run consistent lap times and help with pacing during training (Uses the same car design from Spot V1).

Check the project out here: (https://github.com/aidanahn/pacer_v3_control)

Tools

3D Printer
Hacksaw
Allen Keys
- 2.0mm
- 2.5mm
- 3.0mm

Bill of Materials

Quantity	Part Name	Specifications
19	10x15x4mm Bearing
4	5x10x4mm Bearing
1	8x12x3.5mm Bearing
2	200mm M3 Rod
4	M3 Tie Rod End
1	35kg Servo
1	Motor	Motor mount built for QUICRUN Fusion SE (2in1 FOC system)
1	RC Reciever
1	ESC
4	Wheels	Wheel Hub built for 14mm hex wheels
1	LiPo Battery
1	20T Timing Pulley	Must have 8mm bore
1	40T Timing Pulley	Must have 8mm bore
1	120mm Timing Belt
2	Differential	The differential case is specifically built to house this differential
	PETG Filament
	Grease

Fastener List

Quantity	Size	Length	Head	Type
16	M3	16mm	Socket Head	Screw
18	M3	12mm	Socket Head	Screw
14	M3	12mm	Button Head	Screw
2	M3	20mm	Socket Head	Screw
15	M3	25mm	Socket Head	Screw
8	M3	35mm	Socket Head	Screw
6	M3			Washer
16	M3	4mm	Socket Head	Screw
13	M3			Nut
4	M3	8mm	Button Head	Screw
4	M3	16mm	Button Head	Screw
1	M3	30mm	Socket Head	Screw
4	M4	20mm	Socket Head	Screw
4	M4			Nylon Locknut

Printing List

Quantity	Part Name	Description
1	Front Chassis	Main structural front frame holding servo, steering linkages, and front suspension system
1	Rear Chassis	Main structural rear frame holding motor, belt drive, and rear suspension system
1	Right Reinforcement Beam	Connects front chassis to rear chassis
1	Left Reinforcement Beam	Connects front chassis to rear chassis
2	Lower Differential Case	Protective housing for differential
2	Upper Differential Case	Protective housing for differential
2	Upper Control Arm Bracket	Mounting bracket for the upper control arms to attach to the chassis
4	Upper Control Arm	Upper suspension arm that connects uprights to the chassis
1	Rear Left Lower Control Arm	Lower suspension arm that connects uprights to the chassis
1	Rear Right Lower Control Arm	Lower suspension arm that connects uprights to the chassis
1	Front Left Lower Control Arm	Lower suspension arm that connects uprights to the chassis
1	Front Right Lower Control Arm	Lower suspension arm that connects uprights to the chassis
1	Electronics Bed	Strengthens connection between front and rear chassis and acts as mounting plate for electronics (ESC, receiver, LiPo, etc)
4	Differential Drive Cup Adapter	Adapter between differential output and drive cup
4	Differential Drive Cup	Cup that connects differential output to drive the wheels
2	Front Upright	Front wheel carrier that allows the steering knuckles to pivot and houses the wheel drive cup
2	Rear Upright	Rear wheel carrier housing the wheel drive cup
2	Pinion Carrier	Holds differential pinion gears in place
1	Left Steering Knuckle	Allows wheels to pivot for steering input
1	Right Steering Knuckle	Allows wheels to pivot for steering input
1	Servo Mount	Holds servo securely in place
1	Servo Steering Linkage	Transmits servo power to the steering bar
1	Steering Bar	Main steering bar linking left and right wheels
1	Steering Linkage	Follows the same motion as the steering linkage to keep the steering bar in place
4	Wheel Drive Cup	Connects wheel hubs to the differential output cups
4	Wheel Hub	Mounting point for wheels
1	Steering Mount	Allows the steering linkage to pivot around its axis
4	Dogbone	Transfers power directly from the differential drive cup to the wheel drive cup
1	Front Gearbox Cover	Covers the frontside of the belt drive system
1	Rear Gearbox Cover	Covers the rearside of the belt drive system
1	Front Gearbox Cup	Outputs power to the front differential set
1	Rear Gearbox Cup	Outputs power to the rear differential set
1	Shaft Coupling	Mounts onto motor shaft to transfer power to timing pulleys