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What Fails, and What It Does to a Rider
E-bikes place loads on bicycle components that bicycle components were not always designed for. The machines are heavier, they sustain higher average speeds, they accelerate harder, and cargo and delivery use adds weight again. The failures that follow are mechanical, sudden, and usually give no warning.
| Component | How It Fails and What Follows |
|---|---|
| Brakes | Fade, hydraulic failure, pad or rotor failure, or a system that never met the performance required by 16 C.F.R. § 1512.5. The rider arrives at a hazard unable to stop. |
| Front fork | Failure at the crown or dropouts. The front wheel leaves the bicycle and the rider goes over the bars immediately — among the most severe mechanisms in this practice area. |
| Frame | Cracking at a weld or at the motor or battery mounting, where an aluminium frame designed for a lighter machine carries concentrated load. |
| Wheels and tyres | Spoke or rim failure under motor torque and braking load; sudden deflation at speed. |
| Motor, controller, or drivetrain | Unexpected power application, or a motor that does not cut out as Fla. Stat. § 316.20655(6) requires. |
| Assembly and service | A bicycle shipped boxed and assembled incorrectly, or serviced badly. This points at the assembler or the shop rather than the manufacturer. |
The Equipment Requirements That Actually Apply
There is a concrete federal standard here, and Florida adopts it. Fla. Stat. § 316.20655(5) requires an electric bicycle to “comply with the equipment and manufacturing requirements for bicycles adopted by the United States Consumer Product Safety Commission under 16 C.F.R. part 1512.” And 16 C.F.R. § 1512.2(a)(2) expressly includes a two- or three-wheeled vehicle with fully operable pedals and an electric motor of less than 750 watts, capable of less than 20 mph on motor power alone with a 170-pound rider, within the definition of “bicycle.” The federal requirements are not analogies. They apply directly.
The braking requirements at 16 C.F.R. § 1512.5 are unusually specific for a consumer product rule, which makes them useful in a claim:
- § 1512.5(a) — a bicycle “shall be equipped with front- and rear-wheel brakes or rear-wheel brakes only.”
- § 1512.5(b)(1) — a handbrake system “shall have a stopping distance of no greater than 4.57 m (15 ft) from the actual test speed.”
- § 1512.5(b)(5) — “a force of less than 44.5 N (10 lbf) shall cause the brake pads to contact the braking surface.”
- § 1512.5(c) — for footbrakes, braking force “shall not be less than 178 N (40 lbf) for an applied pedal force of 310 N (70 lbf),” with a stopping distance under (c)(1) of no greater than 4.57 m (15 ft) from a test speed of at least 16 km/h (10 mph).
Reflectors are separately required by § 1512.16(a): an essentially colorless front-facing reflector, colorless or amber pedal reflectors, and a red rear-facing reflector. Those are equipment obligations on the product, distinct from the rider's lighting duty between sunset and sunrise under Fla. Stat. § 316.2065(7).
Florida adds a requirement of its own. Fla. Stat. § 316.20655(6) provides that an electric bicycle “must operate in a manner so that the electric motor is disengaged or ceases to function when the rider stops pedaling or when the brakes are applied.” A machine that keeps driving under braking does not comply with Florida law on its face.
David I. Shiner, Esq.
Founder, Shiner Law Group · AV Preeminent® rated · Florida Bar member since 2002
David I. Shiner founded Shiner Law Group and has been a member of The Florida Bar since 2002. He is a graduate of Nova Southeastern University’s law school and holds an AV Preeminent® rating from Martindale-Hubbell. The firm represents injured people across Florida from offices in Boca Raton, West Palm Beach, Fort Lauderdale, Fort Pierce, Orlando, Wellington, and Belle Glade, and handles these cases on a contingency basis with free consultations and no attorney’s fee unless there is a recovery.
Preserve the Machine Before Anything Else
This is the whole of it. In a mechanical failure case the bicycle is not evidence of the claim — it is the claim. A failed component can be examined by an engineer to establish whether it failed by defect, by fatigue, by misassembly, or by abuse. Once it is repaired, replaced, or thrown out, that examination is impossible and the case usually ends with it.
- Do not repair the bicycle. Not the failed part, not anything else. Do not let a shop “take a look” and swap components.
- Keep every fragment. A snapped fork's two halves, brake pads, a cracked rim, sheared bolts. Bag small parts and label them.
- Photograph the failure surfaces close up before anything is handled further.
- Photograph the classification label required by Fla. Stat. § 316.20655(3) — classification number, top assisted speed, motor wattage.
- Collect the paperwork. Receipt, model and serial numbers, assembly instructions, and the full service history including anyone who worked on it.
- Write down the failure as you experienced it, the same day. Whether the lever went to the bar, whether there was a noise before, whether power was being applied.
- Check the CPSC recall database for the model — and pull the actual record rather than a summary, because a recall's scope and dates determine whether it touches your unit at all.
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Who Is Responsible When the Machine Fails
A mechanical failure is a product liability claim, and Fla. Stat. § 768.81(1) defines a “products liability action” to cover claims based on strict liability, negligence, breach of warranty, or nuisance theories for a defective product. Fault is apportioned under § 768.81(2), and recovery is barred entirely above 50 percent under § 768.81(6).
- The manufacturer — design or manufacturing defect in the component or the machine as a whole.
- The component maker — brake, fork, and motor systems are frequently sourced rather than made in-house.
- The importer or distributor — often the practically reachable defendant where the manufacturer is offshore.
- The retailer or assembler — a bicycle sold in a defective condition, or assembled wrongly out of the box.
- A repair shop — where servicing caused or missed the failure.
- A conversion kit supplier — where a kit changed the loads the frame and brakes were designed for.
Expect the argument that the rider caused it — through modification, neglect, or misuse. Fla. Stat. § 316.20655(4) is where a modification argument starts, since it prohibits tampering that changes motor-powered speed capability or engagement unless the classification label is replaced. That is a real issue where a machine was de-restricted, and a reason to keep receipts for every part that touches the motor or controller.
On timing: the limitations analysis for a product claim is not automatically the ordinary negligence analysis. See the statute of limitations guide, which explains why we will not state a single number for product claims. Treat the deadline as an open question to resolve quickly with a lawyer.