City Cranes
The term "City Crane" refers to a small 2-axle mobile crane which is designed to be used specially in tight places where regular cranes could not venture. These city cranes are popular choices for use through gated places or in buildings.
City cranes were initially developed in 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 maneuver through the nooks and crannies of Japanese roads.
Basically, city cranes are small rough terrain cranes that are made to be road legal. These cranes are characterized by having a 2-axle design with independent steering on each axle, a single cab, a short chassis and a slanted retractable boom. 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 compact spots which will be otherwise unaccessible by other kinds of cranes.
Conventional Truck Crane
A conventional 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 multiple sections on a lattice boom can be added so that the crane could reach up and over an obstacle. Traditional truck cranes need separate power in order to move down and up and do not lower and raise their loads utilizing any hydraulic power.
Manitowoc built the first ever Speedcrane. It proved to be a successful device though many adjustments had to be added later on. 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.