KingSong KS-S16 Alcidae / S16 Pro Suspension Electric Unicycle (2800W)

The KingSong KS-S16 Alcidae (also offered as the KS-S16 Pro) is a 16-inch suspension electric unicycle (EUC) engineered for riders seeking a blend of urban agility, aggressive climbing torque, and trail-dampening comfort, distributed across Europe. Designed around an innovative X-lever suspension linkage providing 88 mm of travel, a broad 16 x 3.0-inch all-terrain tire, and integrated factory power pads with spiked honeycomb pedals, the S16 delivers full-suspension capability without the excessive weight and bulk of larger 20-inch machines.

Propulsion is delivered by a 2800W continuous brushless hub motor (upgraded to 3000W nominal on the Pro specification, with a peak output reaching 4500–5000W), generating up to 150 N·m of torque to conquer roadway grades of up to 40° (84% incline). Operating on an 84V electrical bus (72V nominal), it is powered by a 1480 Wh lithium-ion battery system assembled from 80 high-discharge 21700 cells (LG50LT / Samsung 50S) governed by an intelligent Smart BMS. This powertrain delivers speeds up to 50–60 km/h / 31–37 mph (factory-governed to 25 km/h for street compliance) and provides a declared operating range of up to 120–130 km on a single charge.

Ride compliance is governed by an integrated coil-spring suspension system (750 lb rated spring) delivering 88 mm of vertical dampening travel to isolate the rider from potholes, curb drops, and trail obstacles. The machine includes a stock 84V 5A fast charger that completes a full recharge in just 4 to 5 hours (halved to 2–2.5 hours when using dual chargers), a top-mounted digital telemetry display, multi-level speed alert alarms paired with safety tilt-back, a quad-driver Bluetooth stereo sound system, and an integrated telescopic trolley handle.

✅ Key Features

• Torque-Rich 2800W Powertrain (4500–5000W Peak): high-efficiency brushless hub motor delivering brisk acceleration, speeds up to 50–60 km/h, and 40° hill-climbing power.
• Integrated 88 mm Travel Suspension: advanced X-lever linkage paired with a 750 lb coil spring to soften rough roads and absorb expansion joints.
• High-Capacity 84V 1480 Wh Battery: 80-cell 21700 lithium-ion pack providing an extended operating range of up to 120–130 km per charge.
• Stock 5A Fast Charging Included: factory-supplied 84V 5A charger replenishes the battery in 4–5 hours (approx. 2.5 hours using dual chargers).
• Wide 16 x 3.0-Inch All-Terrain Tire: wide tire footprint providing responsive urban carving and traction across dirt and gravel trails.
• Integrated Bluetooth Stereo Sound System: four acoustic audio drivers (including dual bass radiators) delivering clear music and navigation prompts.
• Built-In Digital Telemetry Display: top-mounted display showing real-time speed, battery level, operational status, and system temperature.
• Factory Power Pads & Honeycomb Pedals: ergonomic side contour pads and spiked magnesium honeycomb pedals for foot grip in wet conditions.
• Automated LED Road Illumination: angle-adjustable front projection headlight, rear brake lamp, and customizable dynamic RGB side lights.
• Distributor Warranty: backed by a 24-month vehicle warranty and 12 months on the battery pack through Fatdaddy.

88 mm Suspension Architecture and Chassis Dynamics

The core engineering hallmark of the KingSong KS-S16 Alcidae is its dustproof X-linkage variable suspension system. Delivering 88 mm of travel through a 750 lb/in coil spring damper, the system isolates impacts from drop-offs, potholes, and cobblestones without transferring harsh jolts to the rider's lower joints.

This suspension geometry provides the rolling comfort typically associated with larger 18- or 20-inch unicycles while preserving the nimble cornering dynamics of a compact 16-inch platform. Riders can corner with confidence thanks to the elevated 220 mm pedal clearance that avoids pedal clipping on uneven camber.

Drivetrain, Battery Pack, and Fast 5A Recharging

Driven by a 2800W continuous brushless motor generating up to 150 N·m of rotational torque, the S16 accelerates smoothly and climbs grades of up to 40 degrees (84% slope). System responsiveness is managed by high-output motor controllers that balance thermal dissipation with immediate rider lean inputs.

The 1480 Wh lithium-ion battery system (84V maximum / 72V nominal) utilizes 80 cells in a 21700 configuration monitored by an intelligent Smart BMS with individual voltage and temperature sensors. A standout benefit is the inclusion of a high-amperage 5A stock charger, which completes a full charge in 4 to 5 hours. With dual parallel charge ports, connecting two chargers cuts recharge duration down to roughly 2 to 2.5 hours.

Rider Safety, Ergonomics, and Cockpit Technology

Safety is governed by active algorithmic safeguards. The unit incorporates multi-level audible speed alarms (staged at 18, 19, and 20 km/h in factory configuration) and an active pedal tilt-back mechanism that lifts the pedal platform to enforce deceleration during high-speed, over-current, or low-voltage scenarios.

An integrated digital display on top of the chassis presents speed, battery voltage, and status icons at a glance. Commuter utility is reinforced by an integrated telescopic trolley handle with an anti-spin lift sensor, four high-fidelity Bluetooth speakers for audio playback, an angle-adjustable front headlight, and factory-fitted power pads.

Technical Specifications

Frequently Asked Questions (FAQ)

What defines the KingSong KS-S16 Alcidae / S16 Pro?
The KS-S16 is a 16-inch suspension electric unicycle featuring an 88 mm travel X-linkage coil-spring suspension, a 2800W motor (4500–5000W peak), a 1480 Wh battery with 21700 cells, a stock 5A fast charger, and quad Bluetooth speakers.

How does the suspension mechanism work on the S16?
The unicycle uses an X-lever linkage mechanism transferring impacts into a 750 lb coil spring with 88 mm of total vertical travel, dampening curbs, cobblestones, and off-road trail bumps.

What is the maximum speed of the KS-S16?
The vehicle is factory-limited to 25 km/h for public street compliance. When unlocked via the mobile app for private terrain riding, it reaches top speeds of 50 to 60 km/h (31 to 37 mph).

What operating range can I expect from the 1480 Wh battery?
Under ideal conditions, the declared range reaches up to 120–130 km. In real-world mixed urban riding, realistic range typically spans between 60 and 90 km depending on rider payload and speed.

How long does it take to fully recharge the S16?
Using the included 5A fast charger, full charging takes approximately 4 to 5 hours. Connecting two chargers simultaneously via the dual charge ports reduces charging time to roughly 2 to 2.5 hours.

What safety features protect riders against over-speeding?
The wheel features multi-stage audible speed alarms and an active pedal tilt-back mechanism that lifts the pedals backwards to prompt deceleration if operating limits are approached.

Does the KS-S16 include a trolley handle?
Yes, an integrated telescopic trolley handle with an anti-spin lift cutoff switch is built into the chassis, allowing riders to roll the wheel comfortably inside buildings and transit hubs.