City Cranes
"City Crane" is a term utilized to define small 2-axle mobile cranes that could operate in compact spaces where the typical crane could not access. These city cranes are popular alternatives to be used inside buildings or through gated areas.
During the 1990s, city cranes were originally developed in response to the growing urban density in Japan. There are continually new construction projects cramming their ways into the cities in Japan, making it necessary for a crane to have the ability to maneuver through the nooks and crannies of Japanese streets.
Basically, city cranes are small rough terrain cranes which are built to be road legal. These cranes are characterized by having a 2-axle design with independent steering on each axle, a short chassis, a slanted retractable boom and a single cab. The slanted retractable boom design takes up less space than a comparable horizontal boom would. Combined with the short chassis and the independent steering, the city crane is capable of turning in tight spots that would be otherwise unobtainable by other crane models.
Conventional Truck Crane
Conventional truck cranes are mobile cranes with lattice booms. This boom is much lighter boom than is found with a hydraulic truck crane boom. The many sections on a lattice boom are able to be added so that the crane can reach up and over an obstacle. Traditional truck cranes do not raise and lower their loads using any hydraulic power and need separate power in order to move up and down.
Manitowoc made the first ever Speedcrane. It proved to be a successful device although many adjustments had to be added later on. Manitowoc hired Roy Moore as a crane designer to help streamline the design. He understood the industry was changing towards IC engines from original steam powered means and designed his crane to change with the times. The Speedcrane was redesigned for a gasoline engine.