Axle: The shaft on which the wheel revolves.
Berm: A corner on a track built up on the outside of a turn to create a banked curve.
BMX: Abbreviation for bicycle motocross.
Bottom Bracket: The mechanism at the bottom of the bicycle frame, which holds the spindle and crank.
Brakes: Any bicycle braking system which works by opening and closing two brake shoes on the rim in a
clamping motion, like jaws.
Brake Lever: A lever mounted on the handlebar used for activating the brake.
Cables: Steel wires braided into cables and sometimes covered with plastic coating. Cables are used to connect
the brake levers to the brakes.
Case: Coming up short on a jump & the back wheel of the bike hits
the peak of the landing.
Chain Stay: The part of the bicycle frame that runs parallel to the
chain. It connects the bottom bracket to the rear dropouts.
Chain Wheel: A one-piece front gear. The chain wheel is attached
to the bottom bracket and crank.
Clipless Pedals: Hook or “clip” to your clip less shoes. Some clipless
pedals have a cage around the outside of the pedals.
Crank: The L-shaped metal arm to which the pedals are attached.
Cruiser: A Bicycle with 24 ” wheel diameter.
Down Tube: Part of the bicycle frame, which slants downward at
an angle. It runs from the head tube to the bottom bracket.
DNS: Designation on a moto sheet that a rider “Did Not Start” in any particular race.
Dropouts: Small, slotted openings, which hold the front and rear wheel axles.
Entry Fee: Paid to register for any sanctioned event.
Expert: Highest level of amateur competition.
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.
Grips: Rubber or Plastic cover who goes on the handle bars at the end to aid in grip.
Headset: Bearing set for which your front end rotates on and your fork/handle bars slide into.
Head Tube: A short vertical tube at the very front 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.
Intermediate: Skill level for riders with limited experience and ability.
Lane: Position 1 thru 8 on the starting gate.
Main Event: Final class race, after all qualifying has taken place, to determine class placing.
Manual: The act of riding a wheelie without pedaling typically over the top section of various jumps.
Moto: a.) A single racing heat. b.) Any riders specific race.
Moto Board: An area where the moto sheets are posted before and during the race.
Moto Number: Number corresponding with any specific race (moto).
Moto Sheet: Paperwork displaying the races in moto number order.
Novice: New rider to the sport.
Number Plate: Displays riders earned or temporary number for identification purposes
Platform Pedals: Are the most commonly used pedals for trails, street, and ramps. They have a platform that
your foot rests on with little pegs that stick to your shoe.
Rhythm Section: A series of jumps or rollers back to back on a track that pose as an obstacle.
Rims: Round part of the wheel that the tires attach onto.
Registration: Where you go to sign up to compete in a race (moto)
Roller: An obstacle on a track that is rolled over as opposed to being jumped.
Sandbagging: Intentionally allowing other rider(s) to pass during a main event or within any round of a total
points race so as not to gain wins towards classification advancement.
Seat Stays: Section of the frame, which runs from the seat tube to the rear wheel dropouts.
Seatpost: The tube, which holds the seat and goes into the frame.
Staging Area: The area where the riders gather for loading into the gate.
Starting Gate: Flat formed area with a hinged portion. This is where each race commences.
Stem: 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 above the launch.
Sprocket: Same as a chain wheel or either the front or rear gear assembly. Sprockets are strong. They are a
combination of a chain ring and a spider together
Table Top: A jump on a track that is completely level or flat all the way across it from the lip to the landing.
Top Tube: The top horizontal tube on a bicycle frame, between your head tube and seat tube.
Track Director or T.D.: a person who runs and maintains all aspects of a BMX track. Does all this for no pay to
help the kids and parents who love BMX. Thanks to all track operators in BMX!
Volunteer: A VERY special person who voluntarily undertakes or expresses a willingness to undertake help for
the track and riders for no pay or free merchandise.
THANK YOU TO ALL VOLUNTEERS, WITHOUT YOU THERE WOULD BE NO LOCAL BMX tracks.
