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Automotive
Dealing with vehicles or machines used for travel or motion, especially cars.
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Automotive > Motorcycles 
heliarc welding
Automotive; Motorcycles
A type of electric arc welding which uses inert gas to shield area around arc.
zener diode
Automotive; Motorcycles
A solid-state device used to regulate voltage in motorcycle charging systems.
multiple ports
Automotive; Motorcycles
Use of many small transfer ports rather than two large ports in two-stroke cycle cylinder. This can give improved scavenging.
helical gear
Automotive; Motorcycles
A gear having teeth that are slightly angled. Helical gears (used for primary drives) are quiet in operation, but absorb a slight amount of power due to side thrust.
accelerator pump
Automotive; Motorcycles
A small pump that squirts fuel into throat of carburetor as throttle is opened.
needle bearing
Automotive; Motorcycles
An antifriction bearing utilizing hardened steel rollers between hardened races or parts.
hemispherical combustion chamber
Automotive; Motorcycles
A combustion chamber shaped like a round dome, allowing use of large valves placed opposite each other in chamber.
Sub-categories
- Auto engine (1154)
- Auto parts (2051)
- Automobile (151863)
- Automotive paint (2513)
- Baby car seats (1413)
- Braking systems (443)
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- Electric vehicle (25)
- Makes & models (540)
- Motorcycles (13381)
- Sport utility vehicle (50)
- Tires (4980)
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- Vehicle equipment (4773)