Motorcycle Glossary of Terms
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Magneto - A high tension
dynamo producing current for the ignition
spark. Superseeded by coil ignition.
Main bearings - Bearings
in which the crankshaft runs.
Manifold - Collection of
pipes supplying mixture or taking away fumes.
Matchy - Common term for
a Matchless Motorcycle.
MCC - The Motor Cycling
club which runs sporting events. Formed in
Mic - common term used for
Micrometer - A precision
measuring instrument that measures component
- A small strange-looking motorcycle, typically
50cc. May also be referred as a pit bike.
Monograde oil - An oil with
a single viscosity, eg SAE80W.
Monoshock - A single suspension
unit linking the swingarm or suspension linkage
to the frame.
Moped - A light motorcycle
under 50cc, some earlier models with pedals
MotoGP - The premier class
of Grand Prix motorcycle racing.
Motocross - Off-road motorcycle
racing held on enclosed, rough circuits, derived
from the French.
Mpg - Miles per gallon.
Mph - Abbreviation for miles
Multigrade oil - Having
a wide viscosity range (eg 10W40). The W stands
for Winter, thus the viscosity ranges from
SAE10 when cold to SAE40 when hot.
Multimeter - An electrical
test instrument with the capability to measure
voltage, current and resistence. Some meters
also incorporate a continuity tester and buzzer.
MX - See motocross.