Compact Racing Sim - 6 DOF

A lockdown project. More details coming soon.

Wow, that looks amazing. You are definitely a talented CAD magician. If the real thing comes near this 3D animation, I definitely want to see it. Good luck with this project.

Sick. I love the bent arms for a tighter fit.

Natural question: what software for the animation?

The quality of this video is awesome !!!! And the rig is very beautiful with some inovation obviously !!! Wait to see the real simulator

Is this a 3d render ?

What is the speed of the movement in mm/s

Thanks, it will be exactly as per the video. Excited to start the project soon

Thanks, the arms are also to ensure the pivot points are around the location of the centre of gravity.

Modelled in Autodesk Inventor. Animation in 3DS Max with fstorm render.

Yes its a render of my design, build will commence shortly.

Linear speed will be approx 550mm/s.

Certainly some real talent on show here .

Gorgeous Sim man. Planning to sell or just for you?

Thanks. No plans to sell, just for me

Will it be AC, or DC with existing parts?

Motors will be 24V DC

Note sure what you mean by 'existing parts'?

The main aim of this project was to create a compact and cost efficient 6 DOF simualtor, while maintaining performance and build quality.

The cheapest commercial 6 DOF simulator I could find is the DOFReality H6 which retails for appox $4000, so this was my benchmark to beat in both performance and cost.

Some H6 stats:

Motion range: 17°
Speed: 500mm/s
Torque 25Nm
Floor foot print: 1200x1500mm

I have decided to use 400W 24V DC motors with 1:50 gearboxes which provide the following:

Rated speed: 60 RPM
Torque 48Nm

I plan to use 100mm CTC levers, but the lever will also allow for 80mm as a back up in case there are issues with load.

I therefore calcualte the linear speed to be 630mm/s @ 100m, and 500mm/s @ 80mm.

Total movement of the 6 DOF can be seen in the video. I am able to achieve 26° pitch, 22° roll and 25° yaw.

The floor foot print of my simulator can be seen in the image below:



It is only 865mm at its widest point. It is a little longer than the DOFreality H6 but this is due to having more of a single seater style design. Also the peddles are adjustable. The H6 uses a separate control box that is not included in their floor foot print dimensions, so this is additional to the sim. My design is fully self-contained, with all electronics situated in the base.



The goal was to ensure that the main base, arms and seat stayed within a 1m diameter area, which has been accomplished:



I also wanted to ensure that the seat was easily accessible, so the seat height is similar to what you would find for an office chair, at 480mm.



One of the most important aspects of the design was to ensure the arms connect to the top frame at approximately the height of the centre of gravity. This makes it much easier on the motors. In order to do this I had to design the arms so that they bend around the frame, as the compact nature of the sim meant that they clashed with the frame if they were straight.

The wheels and peddles are fully adjustable so that a wide range of users can use it.

More pics:

Sorry, I thought you may be sticking with DC motors due to you already having parts off another sim. For a 6DOF application, Once you add up the cost for a good DC setup (Good Power supplies, Batteries, good quality drivers and motors; nowadays its not that much different to a powerful AC Servo/encoder motor setup - with performance hard to beat.

Oh I get you. Dont think the 30kgcm hobby servos off the gseat will be up to the challenge
The motors with sabertooth come in at £850. To replicate the compact setup with ac servos and planetary gearboxes the cost would be £2700. Could get the price down by going the actuator route but this would increase the size of the sim when one of the main aims is to keep as compact as possible.

Yes, understand those planetary gearboxes are expensive, just possibly trying to save you from the pain/expense that myself, Silent Chill and others have gone through. All the best with your project.

Ok, what you are going to use to power these motors? Did you add the cost of PSU or/and Batteries you will need? Also mind you will need really think wires to handle the current peaks, otherwise the wires will not get just too hot, they may even melt or catch fire.

What issues did you have?

Powered with 1000W PSUs. Using sabertooths with capacitors, so no batteries required? Not sure about wires yet. Is there a guide or calculator to figure that out?