E-Bike & Scooter Hub Motor Repair
Expert diagnostics and component-level repair for e-bike and scooter hub motors. We specialize in resolving Hall sensor failures, replacing worn planetary gears, and repairing melted phase wires. Don't replace your motor — rebuild it for peak performance and longevity.
★ 4.9 on Google · 75+ reviews · Burlingame, CA
Introduction
A malfunctioning motor doesn't always mean replacing the whole motor. Most e-bike and scooter motor failures are caused by specific, fixable issues like 'Error 24' Hall sensor failures, stripped internal gears, or heat-damaged wiring. At EVE MODS, we open the motor casing, diagnose the internals, and replace only the failing components, saving you money and keeping original hardware out of landfills. From standard 250W commuter hubs to high-performance 72V+ dual-motor scooter systems, we provide the technical expertise required for a reliable rebuild.
Service Overview
- 1
Full Motor Diagnostics: We begin with a comprehensive check-up to identify motor-related problems, including sensor faults, bearing noise, wiring damage, or power delivery issues. Our goal is to catch and fix issues early before they worsen.
- 2
Motor Replacement: For motors that are burned out, damaged beyond repair, or no longer efficient, we offer high-quality motor replacements matched to your bike or scooter's specifications.
- 3
Hall Sensor Board Repair & Replacement: If your motor 'stutters' or cuts out under load, it's often a faulty Hall sensor. We test individual sensors and the sensor board, solder in high-quality replacements, and re-pot the electronics for water resistance.
- 4
Internal Gear & Clutch Service: Geared e-bike motors rely on nylon planetary gears and a one-way clutch. We replace stripped gears and re-grease the assembly with high-temperature synthetic lubricant to reduce friction and noise.
- 5
Phase Wire Upgrades & Melting Repair: High-voltage scooters often suffer from 'phase wire meltdown' where the insulation fails due to heat. We repair damaged looms and can upgrade the wire gauge to handle higher current for improved thermal management.
- 6
Water Damage Restoration & Re-sealing: For motors exposed to the Bay Area's fog and rain, we perform corrosion cleaning and apply high-grade RTV silicone or gaskets to the motor covers to prevent future moisture-related shorts.
- 7
Post-Repair Testing: Once repairs are complete, we test the motor under load and check its settings with the controller, so power delivery is smooth and efficient.
Cost of Motor Repair & Replacement
Pricing depends on the type of motor, the issue, and whether repair or full replacement is required. Motor work is complex and often involves detailed diagnostics and precision labor.
Prices are for labor unless a line says parts are included; other parts are billed separately. Final pricing is confirmed after inspection and diagnostics.
Known job? We quote it from the price list. Not sure what's wrong? It starts with a diagnostic.
Why Choose Us?
Electric Ride Experts: Electric rides are all we work on. Our technicians understand the motor systems used in popular models, including geared and direct drive hub motors and some mid-drive units.
Proactive Maintenance: Regular motor service can catch problems early, avoid costly breakdowns, and keep your ride safe and efficient.
Component-Level Expertise: We are one of the few shops in the Bay Area that actually opens motor casings to fix internals rather than just selling you a new wheel.
High-Voltage Specialists: Experienced with 36V, 48V, 52V, 60V, and 72V+ systems. We understand controller-to-motor logic, including Hall sensor faults such as Error 24.
Related Videos
E-Bike & Scooter Motor Types: Geared Hub vs Direct Drive vs Mid Drive
Not sure which type of motor your e-bike or scooter has, or which suits your riding? This video compares geared hub, direct drive and mid drive motors, including how each makes torque and where it works best. If something isn't working, we can diagnose it and tell you whether it's repairable.
Service
FAQs
Frequently Asked Questions & Technical Specifications
We repair most hub motors (direct drive and geared) and some mid-drive systems found in e-bikes and scooters. If your motor is serviceable, we can likely fix or replace it.
Motor repair at EVE MODS typically runs $120 – $450+. Hall sensor replacement is $150 – $250 including parts and labor, planetary gear replacement is $140 – $220, and a full motor core swap or replacement is $300 – $450+. The final price is confirmed after inspection and diagnostics.
Motor repair is done at the EVE MODS workshop in Burlingame, CA, by appointment. Opening and testing a motor is bench work, so it is not offered on-site. Riders drop off from across the San Francisco Peninsula.
Common issues include faulty Hall sensors, damaged internal wiring, worn bearings, power loss, overheating, or strange noises. We also replace motors when repair isn't practical.
If you notice loss of power, inconsistent throttle or pedal assist, overheating, or unusual noises from your motor, it's time to get it checked. Early diagnosis prevents more expensive repairs.
Yes. If your motor can't be repaired, we'll guide you in selecting the right replacement for your bike or scooter model. Once you have the new motor, we handle the full installation and make sure it's properly configured for safe and efficient performance.
This is usually a sign of stripped nylon planetary gears or worn bearings. If it's the gears, the motor spins internally but won't provide much torque. We can replace these gears without replacing the entire motor.
Error 24 (on many systems) indicates a Hall sensor signal issue. This means the controller doesn't know the motor's position. We diagnose whether it's a broken wire in the harness or a failed sensor inside the motor and repair it accordingly.
Yes. We specialize in high-output scooter motors. We frequently deal with melted phase wires, split-rim motor assemblies, and Hall sensor failures on dual-motor setups.
Ready to Book Your Service?
Send a photo and a short description. If the job is clear, we quote it from the price list. If the cause is unknown, it starts with a diagnostic. No repair starts until you approve the price.