City Cranes
The term "City Crane" refers to a small 2-axle mobile crane which is designed to be utilized particularly in tight places where regular cranes are unable to venture. These city cranes are popular choices for use through gated areas or within buildings.
City cranes were originally developed during the 1990s as a response to the increasing urban density in Japan. There are always new construction projects cramming their ways into Japanese cities, making it vital for a crane to have the ability to maneuver through the nooks and crannies of Japanese streets.
Essentially, city cranes are small rough terrain cranes which are made 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 a lot less space than a comparable horizontal boom would. Combined with the independent steering and the short chassis, the city crane can turn in compact spots which will be otherwise unaccessible by other kinds of cranes.
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 multiple sections on a lattice boom are able to be added so that the crane could reach over and up an obstacle. Traditional truck cranes require separate power in order to move up and down and do not raise and lower their loads using any hydraulic power.
Manitowoc built the very first ever Speedcrane. It proved to be a successful device though many adjustments needed to be added later on. Manitowoc hired Roy Moore as a crane designer to help streamline the design. He understood the industry was moving 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.