City Cranes
"City Crane" is a term utilized to define small 2-axle mobile cranes which can operate in tight areas where the typical crane could not access. These city cranes are popular alternatives for use through gated areas or within buildings.
City cranes were originally developed during the 1990s as a response to the increasing urban density within 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 roads.
Basically, 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 less space than a comparable horizontal boom would. Combined with the independent steering and the short chassis, the city crane can turn in tight spots which will be otherwise unobtainable by other crane models.
Conventional Truck Crane
A conventional truck crane is a mobile crane that has a lattice boom. The lattice boom is significantly lighter in weight compared to a hydraulic truck crane boom. The multiple sections on a lattice boom can be added so that the crane could reach over and up an obstacle. Conventional truck cranes need separate power in order to move up and down and do not raise and lower their cargo using any hydraulic power.
The very first ever Speedcrane was built by Manitowoc. It was a successful device even though further adjustments needed to be added. Manitowoc hired Roy Moore as a crane designer to help streamline the design. He knew 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.