City Cranes
"City Crane" is a term used to define small 2-axle mobile cranes that could operate in tight areas where the typical crane cannot access. These city cranes are great alternatives to be used inside buildings or through gated places.
City cranes were initially developed in the 1990s as a response to the increasing urban density in Japan. There are continually 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 streets.
Basically, city cranes are small rough terrain cranes that are built to be road legal. These cranes are characterized by having a 2-axle design with independent steering on each axle, a slanted retractable boom, a single cab and a short chassis. 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 is capable of turning in tight 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 many 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 to be able to move up and down and do not lower and raise their loads utilizing any hydraulic power.
The first ever Speedcrane was made 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 changing 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.