City Cranes
The term "City Crane" refers to a small 2-axle mobile crane that is made to be used specially in compact places where regular cranes can not venture. These city cranes are great alternatives for use through gated areas or inside buildings.
City cranes were initially developed during the 1990s as a response to the increasing urban density in Japan. There are always new construction projects cramming their ways into the cities in Japan, making it vital for a crane to have the ability to maneuver through the nooks and crannies of Japanese roads.
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 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 independent steering and the short chassis, the city crane could turn in compact spots which would be otherwise unaccessible by other types of cranes.
Conventional Truck Crane
A traditional truck crane is a mobile crane which has a lattice boom. The lattice boom is substantially lighter in weight than a hydraulic truck crane boom. The many sections on a lattice boom could be added so that the crane could reach over and up an obstacle. Traditional truck cranes do not raise and lower their loads using any hydraulic power and require separate power to be able to move up and down.
Manitowoc made the very first ever Speedcrane. It proved to be a successful device though a lot of adjustments needed 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 internal combustion engines from original steam powered means and designed his crane to change with the times. The Speedcrane was redesigned for a gasoline engine.