zcar2

A nearly fully 3D-printed, 4WD RC drift car. 1:28 scale, fits 90mm (M) wheelbase MINI-Z shells*.

*Note: The front section of the chassis is relatively tall and won't fit certain shells, such as the RX-7 FD. Verified compatible with the AE86 shell. Test drive: https://youtu.be/90DoZpYbfy4

U-joint closeup: https://youtu.be/g_EzM2HMQvg

Some parts in this design are quite challenging to print - make sure you have a well-calibrated printer before attempting.

Features:

• Fully indepdendent sliding suspension
• 4WD drivetrain with printed U-joints (no differentials)
• Mid-mounted battery and motor - approx 50-50 weight distribution
• Parallel steering geometry for drifting
• Uses common M3 fasteners, locknuts everywhere
• TPU printed tires

Non-printed Parts

Part	Quantity	Notes
M3x10mm button head screw	8
M3x8mm button head screw	7
M3x12mm button head screw	1
M3x18mm button head screw	1
M3 lock nut	17
MR105 bearing	8
130 size brushed motor, 2s compatible	1
GH-S37D 3.7g servo	1
Compression spring, ~4mm OD, ~4mm length	4	Softer springs are better. Springs from multicolor retractable pens work well here when cut to length. Ordinary pen springs are too stiff.
Venom Fly 300mah 2S battery	1
Small brushed ESC, 2S compatible	1
Small radio receiver	1	2 channels or more. Flysky GR3E works if you remove its case.
MINI-Z shell, M wheelbase	1	Tested with Kyosho MZQ101 AE86 shell

Assembly

Todo