Fully Printed 1:28 RC Car Chassis (MINI-Z compatible)

For the most up-to-date parts, visit the GitHub project page.

Video: https://www.youtube.com/watch?v=_t0HLC2bZMU

This is a 1/28 scale RC chassis designed to be compatible with Kyosho MINI-Z body shells. Current version fits 90mm (M) wheelbase shells.

Update 8/26/20: I've released a 4WD chassis, available here. The 4WD version is optimized for drifting, while this one is better for grip racing and is cheaper to build.

Features:

• Independent front suspension and hinged rear suspension
• Ackermann steering geometry with 45 degree max steering angle
• Uses common and cheap parts (625 bearings, M3 hardware)
• Low part count and variety - only 3 different screw lengths needed; locknuts everywhere

Parts List

Part	Quantity	Notes
M3x20mm button head screw	7
M3x14mm button head screw	2
M3x10mm button head screw	8
M3 lock nut	17
625 bearing	4
130 size brushed motor, 2s compatible	1
SG90 micro servo	1
Compression spring, ~4mm OD, ~6mm length	2	For front suspension. Softer springs are better. Retractable pen springs cut to ~6mm can work, but are a bit stiff.
Compression spring, ~4mm OD, ~20mm length	2	For rear suspension. Uncut retractable pen springs work for this.
Venom Fly 300mah 2s battery (JST connector)	1	Batteries up to 45x23x16mm should fit
Small brushed ESC, 2S compatible	1
Small radio receiver	1	2 channels or more, smaller than approx 34x22x13mm. Flysky GR3E works if decased.