The QS-S25, as published
Six linear actuators, which also carry the static load. Transport delay under 8 ms, telemetry input to physical motion. €29,500 for the basic set — list, net, ex-works — sold through a European dealer network.
Compare · Qubic
The closest
like-for-like.
The Qubic QS-S25 and the PDK are the most directly comparable pair on this site: both are genuine six-axis parallel-kinematic platforms in roughly the same class. That makes the differences narrow and specific, which is the most useful kind of comparison to read.
Side by side
Two real hexapods.
Where a row says the same thing twice, it says the same thing twice. Manufactured differences are not worth inventing when the machines genuinely agree.
| Qubic QS-S25 | ARK PDK | |
|---|---|---|
| Architecture | 6-DOF platform, six linear actuators | 6-DOF Stewart-Gough, six direct-drive legs |
| Actuation | Linear actuators | Direct-drive BLDC outrunners, field-oriented control |
| Static load | Carried by the actuators | Carried pneumatically, patent CA 3217174 C |
| Control rate | Not published for the QS-S25 | 8 kHz drive loop per motor · 3.3 kHz IK · 1 kHz commands — all internal |
| Transport delay | Under 8 ms, telemetry input to physical motion, as published | Under 1 ms — telemetry in, motion out; boundary on /technology/latency/ |
| Power draw | Approximately 240 W average at 120 V, 200 W at 230 V, typical game | ≈30 W AC with a rider on and the motors armed · 15 W static hold · bursts up to 30 kW come from the capacitor bank, not the wall |
| Supply | As published by the manufacturer | 100–290 V domestic mains, single phase |
| Price | €29,500 basic set (€29,500–€34,900 with cockpit and monitor sets), list, net, ex-works, as published | $4,899.99 PDK · $6,299.99 PDK Racer · $8,499.99 Ecosystem |
| Network | Established European retail dealer network, mature software stack | Direct, plus a community. No dealer network. |
Figures in the other column are read from the manufacturer's published material, with source and retrieval date. Manufacturers revise specifications — if one here is out of date, tell us and it gets corrected.
Sources: Motion Systems — QS-S25 6DOF Qubic System Motion Platform, motionsystems.eu, retrieved 2026-09-13; Qubic System — QS-S25, qubicsystem.com, retrieved 2026-09-13; Qubic System — User manual for QS-S25, §2.7–2.9, qubicsystem.com, retrieved 2026-09-13.
Side by side, in plain terms
The PDK + ARK Ecosystem
$8,499.99 buys the platform, the aluminium racing chassis, extension feet and table, and our direct-drive wheelbase, wheel, load-cell pedals and button box, matched and tuned as one system. Import duty is in the price for the USA and the EU. You add the seat, PC and screen.
Made to order · Batch One: ready to ship an estimated 3–6 months from order confirmation
Where the two part
Linear actuators against direct-drive legs with nothing in the load path. The standing weight on the actuators against carried on air under patent CA 3217174 C. Under 8 ms against under 1 ms — telemetry in, motion out. A dealer's list price against a published price, sold direct.
Keep reading
What datasheets leave out
The method behind this page, applied to us before anyone else.
MOZA HMA150
Three axes on four posts against six axes on six legs.
Direct drive
The architectural difference this comparison turns on.
Every build starts with this platform. The PDK + ARK Ecosystem finishes it — racing chassis, wheelbase, wheel, load-cell pedals and button box, $8,499.99.
Order the PDK + ARK EcosystemAll four builds ›
Made to order · Batch One: ready to ship an estimated 3–6 months from order confirmation