The standard 76 mm alternator can be directly driven by many engines from 5 cc to 25 cc. It is rated for 150 watts at low cruise RPM. It can also be belt driven by larger engines.
Wattage range: 100 to 510 Watt
Engine size range: 30 cc or smaller
Voltage: 6.36 Vac/1000 RPM
Single/three phase: Single
Maximum RPM: 7500
Engine rotation: Universal
Temperature Range: Stator: 160C, Rotar: 66C