RC Cars 3D Printing
Hello and welcome to our 3D printing section! This article will tell you all about 3D printing for RC cars and offer some templates – it’s easier than you think. Everything starts with the wheelbase i.e. the distance between the axles. You can choose different parts to build and built different wheelbase chassis this way. Combine one rear and one front part for the final wheelbase, which should correspond to the body you want to use. Truggy and buggy shells are for 270 mm wheelbase, while lots of drifting cars are around 255mm wheelbase.
What Components Do I Need?
Before you get to printing, you need some parts:
· Radio + Receiver (code 15-20-60)
· Motor Brushed / Brushless 3650 or bigger for 1/10 (4-25-60)
· ESC Electronic Speed Controller (5-25-50)
· Servo 5-15KG (4-10-30)
· 2S LiPo Battery (9-15-25)
· Lights (4-8-20)
· LiPo Charger (5-12-40)
· Battery/Motor/ESC adaptors and thermo shrink tube (0-2-10)
· Shocks and shock oil (8-15-40)
· Trooper or STT09304 like Center Diff (7-10-20)
· Wheels and tyres (12-20-60)
· Motor Pinion M1 14-21T [HK
· 2x Front / Rear Pinion HSP 02030 or similar (3-5-10)
· 2x Front / Rear Diff HSP 02024 or similar (8-16-30)
· 2x 1/10 universal cup / vase (2-5-8)
· 20x bearings for wheels, FR diffs and steering (10-20-40)
· 4x CVDs from HSP, Vandal or Reely (12-18-35)
You also need a 4x 12mm wheel HEX and pins (code 2-5-15), 2x central 1/10 dogbones (code 4-8-20), 4x typical clips for battery/shell holders (0-1-3), 3mm piano wire, some M3 screws and 4x M4 self-locking nuts (6-12-30).
Not all of these parts can be printed. The ones that can’t will cost you around EUR 120 (USD 160 depending on current exchange rate).
We’ll start with the center differential. The above template is compatible with HSP. You can choose from various 1/8 1/10 differentials or 02024 modifications and 3D printed locked differentials for the transmission system.
The axle width is the distance between the wheels of an axle. You will need to use 3D printed arms for normal cars and short CVDs and longer arms for off-road vehicles.
The camber and caster can be controlled for each axle. We recommend beginning with 0º in the rear axle and 6º in the front. You can print steering pins to adjust the toe and use ball joints from a Vandal kit or 4.7mm ball joints.
The holes are 3.2mm in diameter for passing ones and 2.85 mm for screwing ones. For this particular template, all the screws can be 16 mm long.
2 different butterflies can be used for the on-road and off-road configurations with different holes in the lower arms and butterfly so you can control the height of the car to the floor, the extension and position of your shocks.
Bottom of Box, Top of Box, Adapters
These have to be printed in this exact order. The adapter type depends on your differential. It would be easiest to print the Mod1 14T pinion (provided, made for the trooper differential). After you’ve printed it, put it on the chassis. Using 5x M3x30 countersunk screws, screw it from the bottom. They make the chassis structure stronger.
End product should look like this: