BMX Terms
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AXLE: The shaft on which the wheel revolves.
BEAD: The outside edge of the tire, which is stiffened by a wire.
BERM: An embankment on a track built up on the outside of a turn to create a banked curve.
BMX: Abbreviation for bicycle motocross. BMX indicates a style of bike and kind of race or competition.
BOTTOM BRACKET: The mechanism at the bottom of the bicycle frame, which holds the spindle and crank.
BRAKE SHOE: A rubber pad that stops the bike by pressing on the tires rim, creating friction.
BRAKES: Any bicycle braking system which works by opening and closing two brake shoes on the tires rim in a clamping motion, like jaws.
BRAKE LEVER: A lever mounted on the handlebar used for activating the brake by pulling the cable.
CABLES: Steel wires braided into cables and sometimes covered with plastic coating. Cables are used to connect the brake levers to the brakes.
CALIPER BRAKES: A braking system that is centrally mounted to the frame. Two arms with spring mechanisms to provide the movement at the brake
pads to the rim.
CANTILEVER BRAKES: A dual post mounted brake where the brake spring is connected to the post.
CHAINSTAYS: The part of the bicycle frame that runs parallel to the chain. It connects the bottom bracket to the rear dropouts.
CHAINWHEEL: A one-piece front gear. The chain wheel is attached to the bottom bracket and crank.
CRANK: The L-shaped metal arm to which the pedals are attached.
DOWN TUBE: Part of the bicycle frame, which slants downward at an angle. It runs from the head tube to the bottom bracket.
DROPOUTS: Small, slotted openings, which hold the front and rear wheel axles. On many bikes the dropouts do not appear to be separate parts.
They are merely the opening at the ends of two other frame sections: the seat stays and the front fork.
ENDO: When the front wheel of a bike is stopped and rider falls over the front handlebars. (something youd like to avoid!)
FORK: The double-pronged section of the frame, which holds the front wheel in place.
FREEWHEEL: A one-piece rear gear that allows the rider to back-pedal. Bearings are built in.
GEAR RATIO: A number, which indicates the relationship between the two gears and tells you how much work a particular combination of gears will
do. (Something you probably won�t ever figure out!)
GUSSET: A plate or bracket for strengthening an angle in framework.
GYRO: A device that enable you to spin the handlebars a full 360 degrees without cable interference.
HEADTUBE: A short vertical tube at the very front or �head� of the bike. The front fork fits inside the head tube.
HOLE SHOT: Taking the lead position out of the starting gate and going into the first turn.
HUB: Cylinder, which holds the axle of each wheel.
LINEAR BRAKE: A particular type of brake that utilizes a side or linear pull system in which requires a v-type or linear lever. This system offers the
most braking force available. Generally used by racers.
MANUAL: The act of riding a wheelie without pedaling typically over the top section of various jumps.
MOTO: A single racing heat.
MOTO BOARD: An area where the moto sheets are posted before and during the race.
MOTOCROSS: Originally a cross-country motorcycle race, the term is now also used to describe BMX races held on dirt tracks.
NOS: New Old Stock
RHYTHM SECTION: A series of jumps or rollers back to back on a track that pose as an obstacle.
ROLLER: An obstacle on a track that is rolled over as opposed to being jumped.
SADDLE: Another name for a bicycle seat.
SEATSTAYS: Section of the frame, which runs from the seat tube to the rear wheel dropouts.
SEW-UPS: A type of tire, which is actually sewn around the tube. Also called tubular tires. These are mostly used for youth racers.
SEATPOST: The tube, which holds the seat and goes into the frame.
STAGING: The area where the riders gather or are place in �chutes� for loading into the gate.
STEM/NECK: The part connected to the forks that hold the handlebars. Sometimes referred to as a gooseneck.
STEP-UP: A jump in which the landing is elevated about the launch.
SPROCKET: Same as a chain wheel or either the front or rear gear assembly.
TABLETOP: A jump on a track that is completely level or flat all the way across it from the lip to the landing.
TOPTUBE/BACK BONE: The top horizontal tube on a bicycle frame, between your head tube and seat tube.
U-BRAKE: A U-shaped center pull brake that uses a ratcheting spring tension system. Generally more of a freestyle brake.
--------------------
AXLE: The shaft on which the wheel revolves.
BEAD: The outside edge of the tire, which is stiffened by a wire.
BERM: An embankment on a track built up on the outside of a turn to create a banked curve.
BMX: Abbreviation for bicycle motocross. BMX indicates a style of bike and kind of race or competition.
BOTTOM BRACKET: The mechanism at the bottom of the bicycle frame, which holds the spindle and crank.
BRAKE SHOE: A rubber pad that stops the bike by pressing on the tires rim, creating friction.
BRAKES: Any bicycle braking system which works by opening and closing two brake shoes on the tires rim in a clamping motion, like jaws.
BRAKE LEVER: A lever mounted on the handlebar used for activating the brake by pulling the cable.
CABLES: Steel wires braided into cables and sometimes covered with plastic coating. Cables are used to connect the brake levers to the brakes.
CALIPER BRAKES: A braking system that is centrally mounted to the frame. Two arms with spring mechanisms to provide the movement at the brake
pads to the rim.
CANTILEVER BRAKES: A dual post mounted brake where the brake spring is connected to the post.
CHAINSTAYS: The part of the bicycle frame that runs parallel to the chain. It connects the bottom bracket to the rear dropouts.
CHAINWHEEL: A one-piece front gear. The chain wheel is attached to the bottom bracket and crank.
CRANK: The L-shaped metal arm to which the pedals are attached.
DOWN TUBE: Part of the bicycle frame, which slants downward at an angle. It runs from the head tube to the bottom bracket.
DROPOUTS: Small, slotted openings, which hold the front and rear wheel axles. On many bikes the dropouts do not appear to be separate parts.
They are merely the opening at the ends of two other frame sections: the seat stays and the front fork.
ENDO: When the front wheel of a bike is stopped and rider falls over the front handlebars. (something youd like to avoid!)
FORK: The double-pronged section of the frame, which holds the front wheel in place.
FREEWHEEL: A one-piece rear gear that allows the rider to back-pedal. Bearings are built in.
GEAR RATIO: A number, which indicates the relationship between the two gears and tells you how much work a particular combination of gears will
do. (Something you probably won�t ever figure out!)
GUSSET: A plate or bracket for strengthening an angle in framework.
GYRO: A device that enable you to spin the handlebars a full 360 degrees without cable interference.
HEADTUBE: A short vertical tube at the very front or �head� of the bike. The front fork fits inside the head tube.
HOLE SHOT: Taking the lead position out of the starting gate and going into the first turn.
HUB: Cylinder, which holds the axle of each wheel.
LINEAR BRAKE: A particular type of brake that utilizes a side or linear pull system in which requires a v-type or linear lever. This system offers the
most braking force available. Generally used by racers.
MANUAL: The act of riding a wheelie without pedaling typically over the top section of various jumps.
MOTO: A single racing heat.
MOTO BOARD: An area where the moto sheets are posted before and during the race.
MOTOCROSS: Originally a cross-country motorcycle race, the term is now also used to describe BMX races held on dirt tracks.
NOS: New Old Stock
RHYTHM SECTION: A series of jumps or rollers back to back on a track that pose as an obstacle.
ROLLER: An obstacle on a track that is rolled over as opposed to being jumped.
SADDLE: Another name for a bicycle seat.
SEATSTAYS: Section of the frame, which runs from the seat tube to the rear wheel dropouts.
SEW-UPS: A type of tire, which is actually sewn around the tube. Also called tubular tires. These are mostly used for youth racers.
SEATPOST: The tube, which holds the seat and goes into the frame.
STAGING: The area where the riders gather or are place in �chutes� for loading into the gate.
STEM/NECK: The part connected to the forks that hold the handlebars. Sometimes referred to as a gooseneck.
STEP-UP: A jump in which the landing is elevated about the launch.
SPROCKET: Same as a chain wheel or either the front or rear gear assembly.
TABLETOP: A jump on a track that is completely level or flat all the way across it from the lip to the landing.
TOPTUBE/BACK BONE: The top horizontal tube on a bicycle frame, between your head tube and seat tube.
U-BRAKE: A U-shaped center pull brake that uses a ratcheting spring tension system. Generally more of a freestyle brake.
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