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 choices for use through gated areas or inside buildings.
During the 1990s, city cranes were initially developed in response to the growing urban density in Japan. There are continually new construction projects cramming their ways into Japanese cities, making it vital for a crane to have the ability to navigate 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 much 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 would be otherwise unobtainable by other crane designs.
Conventional Truck Crane
A traditional truck crane is a mobile crane which has a lattice boom. The lattice boom is significantly lighter in weight compared to a hydraulic truck crane boom. The many sections on a lattice boom could be added so that the crane can reach over and up an obstacle. Traditional truck cranes need separate power in order to move up and down and do not lower and raise their cargo utilizing any hydraulic power.
The very first ever Speedcrane was built by Manitowoc. It was a successful equipment even if further adjustments needed to be added. Manitowoc hired Roy Moore as a crane designer to help streamline the design. He knew the industry was changing towards IC engines from original steam powered methods and designed his crane to change with the times. The Speedcrane was redesigned for a gasoline engine.