500W 8FUN Mid-drive conversion kits is a geared motor and a chain wheel that is installed on the bicycle bottom bracket, substituting crank shaft, chain wheel and cranks.
- Crank operating motor kit
- Suitable for down-hill and up-hill sport suspension mountain bikes
- Using bicycle transmission
- Super high torque taking mechanical advantage of the gear shift
- Special frame consideration for installation
- Heavier than hub motor kits
- Some geometrical limitations for down tube battery cases
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| Position | Mid Motor |
| Construction | Geared Motor |
| Nominal Voltage | 36V |
| Rated Power | 500 W |
| RPM | 110-130 |
| Max Torque | 100 N.m |
| Efficiency | ≥ 80 % |
| PAS SENSOR | Speed sensor |
| Shaft Standard | JIS |
Mounting Parameters
| Weight | 4.3 kg without battery |
Further Specifications
| Cadence (Pulses/Cycle) | 1 |
| Reduction Ratio | 1:21.9 |
| Magnet Poles | 16 |
| Noise | < 55 dB |
| IP-Code | IP 65 |