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Kids ride-on car steering wheel

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JSB

@_JSB

Replacement steering wheel for kids ride-on cars with 8mm steering wheel shaft

updated February 8, 2026

Description

PDF

Introduction

Stuff breaks. So I needed to model a replacement steering wheel for a "vintage" kid ride-on car. I tried to make the model as robust as possible for it to be able to withstand daily use and abuse. All parts are reinforced either with specific geometry (inner slots) or hardware. I do hope it lasts...

Required Tools

Hex or Allen key – 2.5mm
Hex or Allen key – 2.0mm
Soldering iron (for heated inserts, other methods can be used)
3mm plastic drill (optional, for cleanup)
Deburrer (optional, for cleanup)

Bill of Materials

No	Name	Quantity	Comments
Hardware:
1	SHCS M3 x 30 mm bolt	6	ISO 4762 standard
2	SHCS M3 x 8 mm bolt	6	ISO 7380 standard
3	M3 Hex nut	6	ISO 4032 standard
4*	M3x5x4 threaded insert*	6*	Voron style threaded heat-inserts, for example these
4*	M3 Hex nut*	6*	ISO 4032 standard
5	BHCS M4 x 25 mm bolt	2	ISO 7380 standard
6	M4 Hex Nyloc nut	2	ISO 7040 standard (in a pinch can be replaced with ISO 4032 nuts)
Printed parts:
1**	Base_HeatSet_x1**	1**	No supports
1**	Base_AllHex_x1**	1**	No supports
2	Base_cap_x1_sp	1	Supports from build plate
3	Leg_x3	3	No supports
4	Wheel_x1_sp	1	Supports everywhere

*Choose either heatset inserts or hex nuts. Print the appropriate part!

**Print the appropriate part for available hardware!

Print Settings

I used ASA for all parts, though PETG should be fine also. For added durability harder TPU filaments could be used.

NOZZLE - 0.4mm
LAYER HEIGHT - 0.2mm
PERIMETERS - at least 3, recommended 4
INFILL - at least 15%, recommended 30%
Supports needed for Base_cap and Wheel! (see comments in BOM)
ASA, ABS, PETG ot TPU (avoid PLA)

Assembly instructions

About this design

Developing this model took many hours of design work, test prints, and real-world testing, along with material and hardware costs. I’m happy to share it here for free so anyone can use it.

If you find this design useful and you’d like to support future designs and say thanks, You can buy me a coffee:

buymeacoffee.com/jstraupenim

Thanks for checking it out, and happy printing!

Model origin

The author marked this model as their own original creation.

Step	Description
1	Install all heated inserts in Base_HeatSet_x1 Or Install all M3 hex nuts if Base_AllHex_x1 is used.
2	Insert M4 nut in the side recess of Base_x1
3	Insert M4 nut in the center recess of Base_x1 (note part orientation)
4	Insert m3 nuts in the hex recesses on all Leg_x3
5	Insert all three Leg_x3 in the slots of the Wheel_x1_sp (note part orientation, the flat side of the wheel should be facing down)
6	Insert the Base_x1 from below
7	Insert the Base_cap_x1_sp from the top and secure with M3x30 bolts. Tighten everything down.
8	Install one of the M4 bolts in the center of the Base_Cap_x1_sp from the top. DO NOT TIGHTEN! The bolt should stick out from the printed part.
9	Install all 6 M3x8 bolts from below in the Wheel_x1_sp part. Tighten all of them down.
10	Install the wheel on the steering shaft and insert and tighten the remaining M4 bolt from the side. DO NOT OVERTIGHTEN! Afterwards tighten the center M4 bolt from step 8 to fix the wheel in place.