variable-speed gear

См. также в других словарях:

• variable-speed gear — noun : change gear …   Useful english dictionary

• Gear — For the gear like device used to drive a roller chain, see Sprocket. This article is about mechanical gears. For other uses, see Gear (disambiguation). Two meshing gears transmitting rotational motion. Note that the smaller gear is rotating… …   Wikipedia

• Gear stick — A gear stick (also known as gearstick, gear lever, selection lever, shift stick and gear shifter) is the lever used to change gear in a vehicle, such as an automobile, with manual transmission or several common forms of automatic transmission.… …   Wikipedia

• Variable valve timing — Variable valve timing, or VVT, is a generic term for an automobile piston engine technology. VVT allows the lift or duration or timing (some or all) of the intake or exhaust valves (or both) to be changed while the engine is in operation. Two… …   Wikipedia

• Variable compression ratio — is the technology to adjust internal combustion engine cylinder compression ratios on the fly. This is done to increase fuel efficiency while under varying loads. Higher loads require lower ratios to be more efficient and vice versa. Variable… …   Wikipedia

• Variable-sweep wing — A Variable sweep wing is an aeroplane wing that may be swept back and then returned to its original position during flight. It allows the aircraft s planform to be modified in flight, and is therefore an example of variable geometry.Typically, a… …   Wikipedia

• Variable capacitor — Rotary variable capacitor A variable capacitor (also known as a variable air condenser ) is a capacitor whose capacitance may be intentionally and repeatedly changed mechanically or electronically. Variable capacitors are often used in L/C… …   Wikipedia

• Hub gear — Sturmey Archer SX3 A Sturmey Archer AM bicycle hub gear mechanism wi …   Wikipedia

• Continuously variable transmission — Transmission types Manual Sequential manual Non synchronous Preselector Automatic Manumatic Semi automatic Electrohydraulic Dual …   Wikipedia

• NuVinci Continuously Variable Transmission — NuVinci internal mechanisms Tilting ball variator …   Wikipedia

• Fixed-gear bicycle — A fixed gear bicycle or fixed wheel bicycle, is a bicycle without the ability to coast. The sprocket is screwed directly on to the hub and there is no freewheel mechanism. A reverse thread lockring is usually fitted to prevent the sprocket from… …   Wikipedia