Nevermind, this from Wikipedia:
"By comparison, two stage snow blowers have one or more low-speed metal augers that break up the snow and move it into a separate high-speed impeller (sometimes called the fan). The impeller 'blows' the snow out the discharge chute with considerable force. All but the lightest-duty snow throwers are typically two-stage machines.
Two stage snow blowers range in power from a few horsepower to very large machines powered by diesel engines of over 1000 horsepower (750 kW). The large machines are used for clearing roadways and airport runways. These are capable of removing large amounts of snow quickly. Some municipalities use larger snowblowers to clear snow from streets after a snowfall, often by blowing the snow into trucks which haul it away.
Two stage machines for home use are usually self-propelled, using either large wheels equipped with tire chains or, in some cases, tracks. These are usually single-purpose machines, though some are detachable front ends that can be replaced with other implements, such as a garden tiller.
The auger drive is usually equipped with a shear pin. If a major jam occurs, this pin will break rather than allowing the internal drive gears to be damaged. The pin must then be replaced by the user before operation can resume."
Sounds like most 3 pt blowers would be 2 stage varieties, with atleast 1 auger and a fan. Seems like the performance would be dependent on the fan diameter.
Mike
"By comparison, two stage snow blowers have one or more low-speed metal augers that break up the snow and move it into a separate high-speed impeller (sometimes called the fan). The impeller 'blows' the snow out the discharge chute with considerable force. All but the lightest-duty snow throwers are typically two-stage machines.
Two stage snow blowers range in power from a few horsepower to very large machines powered by diesel engines of over 1000 horsepower (750 kW). The large machines are used for clearing roadways and airport runways. These are capable of removing large amounts of snow quickly. Some municipalities use larger snowblowers to clear snow from streets after a snowfall, often by blowing the snow into trucks which haul it away.
Two stage machines for home use are usually self-propelled, using either large wheels equipped with tire chains or, in some cases, tracks. These are usually single-purpose machines, though some are detachable front ends that can be replaced with other implements, such as a garden tiller.
The auger drive is usually equipped with a shear pin. If a major jam occurs, this pin will break rather than allowing the internal drive gears to be damaged. The pin must then be replaced by the user before operation can resume."
Sounds like most 3 pt blowers would be 2 stage varieties, with atleast 1 auger and a fan. Seems like the performance would be dependent on the fan diameter.
Mike
