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How the Yakbike Cargo E-Trike Works Without a Chain or Belt

Yakbike’s reported chainless drivetrain turns pedal motion into electricity for two rear hub motors—a layout tied to its cargo-bed and leaning-front design.
Entry985 Date Time2 min MechanicCarCody Team
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The Yakbike cargo e-trike replaces the usual chain or belt drive with an electrical path: pedaling turns a generator, which charges a battery that powers two rear hub motors. That is the design described by New Atlas; it is a reported description, not an independently verified teardown.

How Yakbike’s chainless drivetrain works

On a conventional bicycle or trike, a chain or belt carries the rider’s pedal force toward the driven wheel. In the Yakbike layout described by New Atlas, the pedals instead turn a generator. Electricity from the generator charges a battery, and the battery supplies the two motors mounted in the rear hubs.

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New Atlas calls this a “stepless electronic drivetrain.” That phrase describes the reported arrangement; the article does not say Yakbike uses the Free Drive system, which it mentions only as a comparison.

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Why use an electronic drivetrain on a cargo trike?

The article connects the drivetrain choice to the Yakbike’s particular layout. Its crankset is positioned directly in line with a flat-fronted cargo bed, while the front end leans into corners and the rear stays upright. A conventional chain or belt would need a mechanical route from the crankset toward the rear axle. The electrical generator-to-motor arrangement avoids that path, according to New Atlas.

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This explains the design rationale reported in the article; it does not establish that an electronic drivetrain is more efficient, needs less maintenance, or is better for every cargo trike.

Yakbike specifications reported in 2023

The following figures are reported by New Atlas in its August 14, 2023 article, which attributes the specifications to Yakbike. They are not current official specifications independently verified here, nor are the range figures test results.

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Item Figure or feature reported
Rear hub motors Two motors, rated at 250 W each; 170 Nm torque per motor
Assisted top speed 25 km/h
Standard battery and claimed range 2.6 kWh battery; about 80 km claimed range
Optional second battery Claimed range up to 150 km
Vehicle weight 70 kg
Maximum rider-and-cargo payload 350 kg
Other reported equipment Regenerative braking, hydraulic disc brakes, LED lighting with turn indicators, an electronic differential, and a throttle mode for pushing or starting from a stop

All figures and features in this table are reported in the New Atlas article. In particular, the stated range is a claim, not a guaranteed distance under defined riding conditions.

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Cargo configurations mentioned

New Atlas lists a Yakbox delivery box, trash and organic-waste bins, and a pallet carrier among the cargo modules. It also mentions optional sun-and-rain protection and a front mudguard. The 2023 article does not establish present availability, current prices, or which configurations are compatible with one another.

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What the chainless design does—and does not—tell you

The central distinction is where the rider’s effort goes: the pedals turn a generator rather than mechanically pulling the rear wheels through a chain or belt. The reported design gives the vehicle an electrical connection between pedal input and rear-wheel motors. The available article does not establish real-world efficiency, maintenance requirements, or current product specifications.

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