3rd Year Special Annual Double Issue Vol 4 Issue 1 & 2 Jan - Apr 2 3rd Year Special Annual Double Issue Vol 4 Issue | Page 78

ADVENTURE & WILDLIFE
it may be less rugged, and equipped with dual-
purpose tires and with more road legal
equipment, such as indicators, mirrors and extra
instruments. The Motocrotte (or cainette) was used in Paris
to collect dog waste with vacuum suction in the
1980s and 1990s, and was still in use in other
French cities as of 2016.
• Trials — Trials riding is a specialized form of
off-road competition testing balancing skills and
precision rather than speed. For a trials bike, low
weight and crisp throttle response power are
the priorities, so trials bikes tend to have a small
(125 cc to 300 cc) engine, with two-strokes being
common. During the trial, the rider stands on
the footpegs, so a trials bike will have only a
vestigial seat, or no seat at all. Fuel tanks are
very small, giving a very limited range. A derny is a motorized
for motor-paced cycling events.
• Track racing — High-speed oval racing, typically
with no brakes, nor rear suspension. The
engines, fuelled by methanol, are long-stroke
four-stroke singles, such as JAP and Jawa. They
have at most two gears. Some types, such as
speedway, and grass-track bikes, are designed to
take left turns only.
bicycle
used
Tricycles
While motorcycles typically have two wheels,
some motorized tricycles are classed as three-
wheeled motorcycles. Some brands have made
various types of three-wheelers direct from the
factory. Most of these vehicles are treated as
motorcycles for registration or licensing
purposes.
Tilting three-wheelers keep all three wheels on
the ground when they lean to negotiate curves.
These include Honda’s Gyro range, all of
which have a front wheel that leans and
a pair of rear wheels that do not, and the
Piaggio MP3, which has two front wheels and a
single rear wheel, all of which lean.
Utility
Some motorcycles are specially adapted for
specific job functions, such as those used by
the ambulance, blood bikes, fire, and military
services, and for specialized delivery services,
such as pizza deliveries. Beginning in the
1960s with the Mountain Goat specialized
motorcycles were developed for use on farms.
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Vol 4 | Issue 2 |Mar - Apr 2019