GuzziRacer Post from Instagram

1939 Moto Guzzi 250cc compressor startup. These bikes typically had the carburettor mounted before the super charger. That means that when you close the throttle it keeps reving until the charged fuel and air mixture has passed out of the expansion chamber. This requires the rider to shut the throttle before you need to decelerate. It’s even difficult to sit and rev the engine. #motoguzzi #guzziracer #mandellodellario #classicmotorcycle