Rotary Knee Actuator
Brushless pancake motor with backdrivable planetary gearing and whisper-quiet harmonic damping.
+40% Peak Ascent Boost (32 Nm)390g per joint module
Meet MO/GO • Batch 01
Engineered to disappear into your stride.
MO/GO pairs featherweight rotary robotics with the weather protection of Arc'teryx Gamma alpine pants—giving you +40% uphill propulsion and -30 lbs of downhill joint relief.
System Architecture
Four modular components working as one.
Every MO/GO kit includes two brushless knee actuators, internal prepreg carbon load cradles integrated inside your Arc'teryx Gamma EX pant, and dual hot-swappable Climber Battery Packs.
Arc'teryx Gamma EX Chassis
Fortius DW 2.0 alpine softshell pant with concealed carbon load cradles and magnetic snap ports.
15-Second Magnetic Snap-In480g (Pant + Internal Carbon Cuffs)
Climber Battery System
Cold-rated lithium-silicon battery pack with downhill regenerative charging and FAA carry-on compliance.
3.5+ Hours Continuous Max Climb310g per pack (Hot-Swappable)
On-Device Gait Controller
1,000 Hz sensor fusion array adapting knee torque to terrain slope in real time without cloud connectivity.
< 4ms Stride Intent LatencyIntegrated in Joint PCB
Adaptive Gait Modes
Up to +40% propulsion on steep climbs
Synchronized brushless torque assists your quadriceps on every uphill step, making a heavy alpine pack feel weightless.
Output
32 Nm
Effect
+40% Boost
Endurance
1,250 m Climb
Specifications
At a glance.
- Peak Torque
- 32 Nm brushless rotary knee actuator (+40% ascent boost)
- Joint Relief
- Up to -30 lbs perceived downhill knee impact absorption
- System Mass
- 390 g per actuator module • 480 g Gamma EX pant + carbon cuffs
- Apparel Chassis
- Arc’teryx Gamma EX softshell with concealed carbon load cradles
- Battery & Travel
- 98 Wh cold-rated Li-Si pack (3.5+ hrs climb • FAA carry-on legal)
- Weather Sealing
- IP65 actuator • IP67 battery • Machine-washable pant