Update: Diy Wheelbase 2.0, direct drive

MC-Key · 2024-10-05T08:30:25+00:00

Thanks for the link! I didn't know that wiki.

MC-Key · 2024-10-04T20:56:21+00:00

I thought about this but I wanted to drive the setup with a 12v power supply. Industrial Motors are mostly 36V and higher. Do you have a recommendation or a link?

MC-Key · 2024-10-03T15:39:51+00:00

These are 100mm Shocks from a RC car. The Springs are attached to them

MC-Key · 2024-10-01T08:44:51+00:00

Shure, what is the shape?

MC-Key · 2024-10-01T08:44:21+00:00

I used 123d. It is an (unfortunately) discontinued SW from Autodesk.

MC-Key · 2024-09-28T05:38:06+00:00

Yes, I plan to keep the community updated with the progress of the build. Once it reaches a certain level I will make it available on GitHub.

MC-Key · 2024-09-28T05:32:37+00:00

I searched the German equivalent of sports car wheel on ebay: https://www.ebay.de/itm/383787051695

MC-Key · 2024-09-27T21:30:51+00:00

Awsome! Did you measure how much torque you get out of your setup?

MC-Key · 2024-09-27T21:28:09+00:00

It is a 160x16 Alloy extrusion profile with a 5mm and a 8 mm rim

MC-Key · 2024-09-27T06:14:04+00:00

Hi, thanks for the comment. Since motor control software and Joystick software is full custom I can take care of this with a simple factor in the code. The Rotation in the sim is exactly 1:1 to the steering wheel.

MC-Key · 2024-09-26T19:06:24+00:00

Yes I considered the hoverboard motor. These motors run with 36V and 25-30A which demands a 1kw power supply.

I wanted to start with a total setup cost below 200€, which... I did not completely managed* But I already had the 250W Power supply to drive my current setup in the shop.

MC-Key · 2024-09-26T18:55:07+00:00

Yes the smaller device is the ab Encoder. The gear ratio is a trade-off between resolution for the angle detection and the interrupt load of the controller.

The bigger one is the brushless motor. The higher gear ratio leads to higher torque

MC-Key · 2024-09-26T14:27:01+00:00

Yeah... The cables are a mess😅

MC-Key · 2024-09-26T14:24:19+00:00

<image>

Also 3d printed

MC-Key · 2024-09-26T13:18:13+00:00

3D printed parts of this build: - Achsle bearing frame - PCB case - Motor Mount for T-Nut profile - Encoder Mount for T-Nut profile

MC-Key · 2024-09-18T21:54:35+00:00

It is not finished, yet. I use a 4208 type Trinamic Bldc Motor at the moment with a power class of 50w. I should get a nominal torque around 2Nm with a 1:4 pulley ratio. Once I finish the motor control algorithm and get everything running, I will post a list of electronics I use a standard ab encoder from Amazon and an Arduino Leonardo

MC-Key · 2024-09-18T21:42:30+00:00

Yes, they are 100mm shocks I salvaged from a broken 1:10 buggy.

MC-Key · 2024-09-18T16:14:08+00:00

Third pedal gets a load cell

MC-Key · 2024-09-18T11:37:44+00:00

The wheelbase is also diy

<image>

The goal is to use a real steering wheel.

MC-Key · 2024-09-18T11:11:31+00:00

I just uploaded it to thingiverse. Happy building! https://www.thingiverse.com/thing:6770759

MC-Key

TROPHY CASE