DK2 3DOF Motion System Review

Final thoughts on the DK2 motion kit from the guys at Sigma Integrel. They are located in California. Where they do all their own CNC work on the actuator housings and other parts in this system. I would classify the DK2 system as a true turn key kit. Remove the parts from the box, mount the actuators, plug in the cables and you are ready to go. The actuators are built to a commercial quality. Every part has a very stiff feel to it. The actuators employ a dry
lube solution. Using Teflon impregnated plastic sleeves to handle the friction created during actuator movement. The pistons are 50mm diameter steel units. Total travel range of the actuators is 50mm or two inches. The motors
the DK2 uses are quite different that what I have tested to date. They are ClearPath units manufactured by Technic. They have integrated servo drive circuitry in the motors encoder housing. A slick compact solution. The controller box’s interior is noticeably empty in the absence of conventional servo drives normally required for every motor in the system. Also sporting a very professional, clean looking layout. Mounting the actuators to 40 series profiles was very easy using the 12mm thick aluminum mounting plates. Once everything was cabled up, it was time to do some real testing. One thing you notice right away is the automatic balancing of the DK2 system. If you shift your weight in the seat while sitting still. You can feel the system adjust to that movement. First time I have experienced something like this. The Velocity Trap tuning app is very easy to use, and I was able to find a good setup that allowed me to drive consistent lap times. Currently, the app is only supporting iRacing and Assetto Corsa racing software. Sigma Integral is continuously updating this control solution to bring more features. As of this testing,
I was not able to use the upcoming smoothing and engine vibration features. The noise level for this system is more than some others I have tested. But not something that caused me to ding it for. As it really depends on where you will be running your motion system. And at my usual driving sound volume levels it didn’t bother me personally. Overall I think this is a very good driving experience. And am quite certain it will only get better as the guys Sigma Integral evolve the software that controls the DK2. At a price of 4900.00 for the kit, I think it is worth a look if you are in the market for a true turn key motion system.