1969 Chevrolet Chevelle SS 396

[BLACK CAT]

Mmmhhhh , leggendo qua e la :


Also, the reason you throw belts when you shift, but you don't throw one while sitting revving in the driveway is: Even when using a large alternator pulley, you are driving the alt to at least twice engine speed. When you shift, engine speed drops almost immediately. But the spinning alternator contains considerable inertia. The energy must be dissipated in some manner. The usual mechanism is the energy is absorbed by the drive belt. In absorbing energy, the belt stretches, causing it to slip off the pulleys. The smaller the pulley, the greater the amount of stretching. So, the shorter the belt, the less affect the stretching will have on the amount of slack produced. A large diameter alt pulley MAY be all you need with the RPM range you are running.