3kW DIY Motion Platform

Introducing the SFX Motion Sim Platform.

New Sponsor System / Neues Paten-System

After a break we are accepting new members again.
But this time it requires a sponsor who will nominate you as a new member – Please do not donate without having a sponsor!

Due to lack of respect and disregard of the project license, which prohibits any commercial use, the project was paused.
Unfortunately this situation still continues and dealers offer SFX-100 systems or parts for sale.

Therefore we have decided to use a sponsor system to protect the project against these commercial abuse.
Sponsors are people who are already members of our community and are willing to support you on your way.
The Sponsor will nominate you and will guide you through the process becoming a new member.

How to find a Sponsor?

This is the more difficult part. The project was started in the German Sim-Racing Community, strongly supported by the VR Forum (https://forum.virtualracing.org/forum.php).
There you will find supporters and you can get in contact to find a sponsor.

For the English speaking people it will be even more difficult.
Despite the fact that there is no official website/forum on which we are still active, you will find members of us on all major sim racing portals and forums.

Nach einer Pause nehmen wir wieder neue Mitglieder auf.
Aber diesmal braucht Ihr einen Paten, der Euch als neues Mitglied nominiert – Bitte spendet nicht ohne Nominierung durch einen Paten!

Aufgrund von mangelnden Respekts und Missachtung der Projektlizenz, die jegliche kommerzielle Nutzung verbietet, wurde das Projekt pausiert. Leider dauert diese Situation immer noch an, und Händler bieten SFX-100-Systeme oder Teile davon zum Verkauf an.

Deshalb haben wir beschlossen, ein Sponsorensystem zu verwenden, um das Projekt gegen diesen kommerziellen Missbrauch zu schützen.
Paten sind Personen, die bereits Mitglieder unserer Community sind und bereit sind, Euch auf eurem Weg zu unterstützen. Der Pate wird Euch nominieren und Euch mit allen wichtigen Infos versorgen.

Wie findet man einen Paten?

Dies ist der schwierigere Teil. Das Projekt wurde in der deutschen Sim-Racing-Community gestartet, stark unterstützt durch das VR-Forum (https://forum.virtualracing.org/forum.php).
Dort finden Ihr Unterstützer und Ihr können Kontakt aufnehmen, um einen Sponsor zu finden.

Für die englischsprachigen Leute wird es noch schwieriger sein, einen Sponsor zu finden.
Trotz der Tatsache, dass es keine offizielle Webseite/Forum gibt, auf der wir noch aktiv sind, finden Sie Mitglieder von uns auf allen wichtigen Sim-Racing-Portalen und Foren.

The platform comprises 4 of our open source design SFX-100 linear actuators, an Arduino with our supplied firmware, all controlled by our SimFeedback software. You get a fast, highly reactive motion platform along with output for tactile effects via a sound card.

The SFX-100 actuators and controller are easy to build for people with moderate DIY skills, this guide will show you how. We have an active community of SFX owners who will help you out with threads on popular sim racing forums as well as an official Owners Discord.

The actuator design is free for private use. We don’t allow commercial use of it [see FAQ#Commercial].


The SimFeedback software is freely downloadable for private use, with a donation enabling access to expert mode. Again it is not for commercial use.

SFX-100 Actuators

  • 750 Watt 240V AC Servos
  • 7.5 nm Torque
  • 100mm Travel
  • 245mm/s velocity
  • Easily move 200kg+ rigs.

DIY Open source Design

  • 3D Printed Parts
  • Off the shelf components
  • Shopping lists available
  • 2-3 hours work per actuator
  • No specialist tools (Except 3D printer)

Note: mains voltage wiring is required [see here]

SimFeedback Controller Software

  • Free to use
  • Receives Telemetry & Sends motion commands to actuators via Arduino
  • Arduino Firmware supplied
  • Full control of platform movement and intensity
  • Preconfigured motion profiles
  • Comprehensive videos and guide
  • Telemetry providers for most popular racing sim titles

Expert Mode & Owners Discord

  • Access by Donation
  • Global tuning settings
  • Individual setpoint graphs
  • Realtime telemetry display
  • Access to Owners discord

Recent Posts / View All Posts

555, more Games, new Extensions, great Concepts!

| News | No Comments
555, it is the number of currently registered members for this project. A really great success for the whole community. So here are some highlights of what this community has…

400 Users – SimFeedback insight

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We have reached a big milestone, the number of people who have built our project has climbed above the 400 mark. A big thank you to all who have put…

See it in action

The platform has 3 degrees of freedom, ie it has Heave, Pitch and Roll movements. What does this mean? Watch the video to find out

The SFX-100 actuators are quiet also, at the 1:00 mark @saxxon66 turns the ingame sound off so you can hear what they are like.

Cars and tracks can vary wildly dependent on both the physics engine of the title, the specific car being modelled, and the track surface mesh. Look at the difference between a GT3 car and a F1 car (2:12 mark)

More videos

How does it work?

3DOF Platform Mover design

SFX-100 Actuator
AC Servo Drive
Arduino controller

Telemetry Input

The SimFeedback software receives telemetry from titles such as Assetto Corsa, iRacing, rfactor 2 and more. This telemetry is then translated into motion and tactile output via different profiles inside SimFeedback which you can configure.

Motion Output

The motion output is sent to an Arduino running our custom SimFeedback firmware . The Arduino is wired to each of the AC Servo Drives .

Each of these drives (powered by 220v AC) in turn sends signals to their respective Servo Motors on top of each SFX-100 actuator. The servo rotates clockwise/counterclockwise, this translates into linear (vertical) travel via a standard ball screw – and in turn moves each corner of your sim rig up/down.

Tactile Output

SimFeedback can also send sound output for engine RPM and rumble, through a soundcard out to an amplifier & bass transducers

More information

Build your own

Comprehensive shopping lists, build instructions, and software guide

Join the community

Exchange ideas, help if you get stuck

There are SFX owners all over the world with a number of different threads in forums – all supportive and willing to help you out if you get stuck.

Germany Virtual Racing – where it all began https://forum.virtualracing.org/showthread.php/109282-DIY-3KW-Motion-Sim-Rig-Coming-Soon

United Kingdom of Great Britain and Northern IrelandThe iRacing thread *iRacing account required http://members.iracing.com/jforum/posts/list/625/3616928.page

Netherlands Tweakers.net thread  https://gathering.tweakers.net/forum/list_messages/1891321

Please note we don’t provide an official support system – this is all DIY

Once you commence your build you can donate to get both Expert mode of the software and access to the Owners Discord.