Abstract: An electric generator including: a prime mover; an alternator; a first drive shaft connected to the prime mover; a second drive shaft connected to the alternator; and an overdrive assembly including: a speed conversion assembly connected to the first drive shaft; and a centrifugal clutch connected to the speed conversion assembly and to the second drive shaft. An electric generator, including: a prime mover; an alternator; and an overdrive assembly. For a load on the generator at or above a load threshold, the overdrive assembly is arranged to form a first torque path from the prime mover to the alternator, the first torque path bypassing the overdrive assembly. For a load on the generator below the load threshold, the overdrive assembly is arranged to form a second torque path from the prime mover to the alternator through the overdrive assembly.