Hub Motor Magnets: The Thunderbolt 4000W Snap Explained
Don't lose your finger. That loud SNAP you hear when the core of our Thunderbolt hub motor drops into the rotor isn't just for show. It's hub motor magnets doing exactly what they were built to do, and it's a great window into how a high-performance electric bike motor is built.
What Is the Thunderbolt Hub Motor?
The Thunderbolt is our gearless hub motor, capable of 4000W. Want to explore the hub motor options we build with? Browse our High Performance Hub Motor Conversion Kit, which offers 2-5kW power options and a USA-made Li-NMC battery.
Why the Snap? Neodymium Magnets at Work
Here is what is happening in the video:
- The outer rotor is packed with powerful neodymium magnets.
- The stator (the core with the copper windings) gets pulled in hard the moment it gets close enough.
- The attraction builds fast, so the stator accelerates and slams home with a solid thunk.
It is pure magnetic attraction.
Respect the Magnets
Keep your fingers clear and enjoy the magnetic attraction from a safe distance. If you are curious about motors and cooling, don't miss our post on ferrofluid cooling on our 10kW hub motor.
Ready for Hub Motor Power?
Whether you want to convert a bike you already own or ride one of our complete builds, we can help you choose the right power level. Explore our e-bike conversion kits, see the full range of electric bikes, or shop electric components.
Ready to build? Start with the High Performance Hub Motor Conversion Kit, or contact Hi Power Cycles and we will help you pick the right setup.
