Single speed bikes have one gear ratio and no shifters, making them simple and easy to maintain. They are popular for their elegance and simplicity, but may not be suitable for varied terrain. They are gaining popularity and more companies are offering affordable options for different types of riders. People unfamiliar with the world of […]
Speed skates are designed to go as fast as possible on a smooth, flat surface for racing. They sacrifice agility and precision for speed, with a long blade or wheels for a smoother ride and more traction. They are not for everyday use and do not have brakes. Speed skates are ice skates, or sometimes […]
Speed blocks are mortarless butt joint or H-block concrete masonry units (CMUs) with an open “H” configuration. They are lighter and more versatile than standard CMUs and require less mortar. Speed blocks are commonly used in upper joints and wall cladding. They can be made of various aggregates, including plastic and rubber, and can be […]
The vertical speed indicator (VSI) is a static instrument that shows the rate of climb or descent of an aircraft. It relies on pressure differentials and exhibits a small response delay. VSI readings are given in units of feet per minute and have a delay of 6-9 seconds before showing accurate readings. A vertical speed […]
Gear speed is determined by the size and number of teeth on interconnected gears, expressed as a ratio or in RPM. Gears transfer power and move at a constant speed, with slower gears transferring more power. Gear speed affects power output and can lead to mechanical failure if a gear stalls. Gear speed is a […]
Pangea, a supercontinent that included South America, Africa, Antarctica, India, and Australia, began to disintegrate slowly millions of years ago. Tectonic plates can move apart at increasing rates up to 20mm per year, causing violent earth movements, heat, and volcanic activity. Millions of years ago, a supercontinent now called Pangea contained what would later become […]
Piston speed is the average speed of a piston moving through its stroke, measured in feet per minute. It is a critical factor in engine design, affecting power, efficiency, fuel mileage, and even altitude restrictions in aircraft engines. Designers consider factors such as oil pump volume, piston ring design, and engine cooling to ensure the […]
Transportation engineers evaluate highways to set speed limits based on entrances, road use, and geometry. Residential and commercial entrances, intersections, and pavement conditions are considered. The resulting index is compared to traffic to determine if a lower limit is needed. If so, a sample of existing speeds is taken. Speed limits set below the state […]
Speed pulleys are mechanical pulleys that provide high performance for repetitive or motorized use. They add texture and rotational stability, adapting to gearbox transmission speeds to match speeds and traction forces. They come in various shapes and sizes, handling great speed and force, and can be fixed or moving. They are used in equipment such […]
Velocity ratio is the comparison of an object’s force to the forces acting against it. To calculate it, divide the force working against an object by the force exerted by the object itself. The formula for measuring velocity comes from Isaac Newton’s second law of motion. A driver can increase acceleration by putting into motion […]
Express doors are automatic sliding or rolling doors that open and close quickly to maintain the climate in enclosed areas and reduce heat flow between two areas. They are commonly used in industrial or commercial settings and can minimize temperature fluctuations. Safety is a major concern, and they are typically installed with multiple security systems. […]
A variable speed pulley system uses lubricated chains to adapt to different functions. It is weightless, reduces friction and force required, and has movable flanges to control speed. It is inexpensive and has an almost infinite speed range. A variable speed pulley allows you to use pulleys at different speeds. This means that the basic […]
Speeds and feeds refer to the rates at which a tool cuts and material is fed into it. They are important variables in milling, drilling, and turning. Factors that affect speeds and feeds include the type of machine, tool and workpiece materials, and depth of cut. Machining tool manufacturers provide recommended values, but adjustments may […]
Soccer speed drills should focus on developing fast-twitch muscles and explosive power through sprinting, interval training, and plyometrics. Ladder drills and lateral movement exercises are also important, and stretching before and after workouts is crucial to avoid injury. Unlike training for muscle gains and resistance training, training for speed must work a different set of […]
Pumps are mechanical devices used to move liquids or air. Pump speed determines the flow of liquid or air and varies between industries. Fuel pump flow rate is critical for engine operation, while water pump speed is used for metering. Heat pump speed measures the flow of air and is used for billing purposes. A […]
High speed steel is a type of steel used in high speed applications like drill bits and power saw blades. It is an alloy that combines metals like tungsten, chromium, molybdenum, and cobalt. High-temperature treatment helps the steel remain hard under extreme temperatures. Its development has advantages over carbon steel tools and is a popular […]
Speed training exercises improve maximum speed and endurance through techniques like repetitive running, high kicks, and weight lifting. Warm-up and cool-down are essential, and agility drills should be included. Sprint repetitions and acceleration drills are important, as well as distance running and sport-specific exercises. Speed training exercises are intended to increase a person’s maximum speed, […]
The lathe is the oldest machine tool and a key technology of the industrial revolution. Variable speed lathes are important for controlling spindle speed, which affects torque and cutting speed. Different materials require different speeds, and variable speed lathes can be operated by foot, belts and pulleys, or electronic controls. A lathe, which is a […]
High-speed steels are alloys used to make tool bits and machine parts for high-speed machining. They can withstand high temperatures without losing hardness, making them ideal for drill bits, milling cutters, and reamers. HSS products can be coated to improve surface hardness and lubrication, resulting in cleaner cuts and better tool tip life. HSS is […]
Lathes remove material symmetrically from a workpiece. A speed lathe runs faster than a standard lathe and is used for small tasks. Lathes come in different types and sizes, but all create symmetry in the workspace. Standard lathes are large and expensive, while finishing lathes and speed lathes are smaller and less expensive to operate. […]
