The atomizer, or mixer tube, plays a role from 1/4 to 3/4 throttle where your doing most of your riding. Most Vespas, even kitted ones, will use either a BE3 or BE4 but many people have experimented with the others in different engine setups with great success.
The atomizer, or mixer tube, plays a role from 1/4 to 3/4 throttle where your doing most of your riding. Most Vespas, even kitted ones, will use either a BE3 or BE4 but many people have experimented with the others in different engine setups with great success.