The 150 and 152 both have 2 blade propellers.
The Cessna 150 uses an air cooled engine.
One can travel in a Cessna 140 by finding one with a private owner in contracting with them for a flight. The Cessna 140 is a two-seated, propeller-driven, fixed-wing aircraft, not intended for general passenger use.
150 mph
A direct drive engine arragement is one where the crankshaft, to which the pistons of the engine are connected, is directly connected to the propeller. Non-direct drive engines use a gearbox, usually a reduction gearbox, to make the propeller spin at a RPM lower than the engine's. In case of the Cessna 172, the rotational speed of the propeller (2 blade, hartzell) is the same as the engine's.
I believe that would be the Cessna 150 which weighs in about 980 pounds
The original M model Cessna had 150 hp
The empty weight of a Cessna 150 is 1,111 lb (504 kg) the maximum takeoff weight is 1,600 lb (730 kg).
Which one? A Cessna 150 has two seats. A Citation Sovereign has 12.
Cessna C-150 can hold 1 passenger. Cessna C-172 can hold 3 passengers
Two
The Cessna 150 is a small two seat tail wheel aircraft. It is very popular as a trainer and a glider tug for groups like Air Cadets.