Champion In The Power Game
Every
element that provides fun and pleasure in motorcycle sport has been refined
into the TYl75. All Yamaha’s exclusive skills have gone into producing this
lightweight that packs a championship punch whenever its front wheel crosses
the "Section Begins" card. Club riders and those of international
calibre, have found that the TYl75 with its lightweight low-down torque and instant
take-off from the bottom of the speed range, provides a trials motorcycle
capable of being used on every type of going from the tight, artificial
sections of forest land to the natural, rock climbs of mountain country. This
is the machine to provide the ultimate satisfaction for the rider when looking
back at the section having
recorded
a perfect "clean".
Engine
A total
design commitment to trials riding has given the tough 2-stroke,
single-cylinder engine the ability to allow the rider to rely implicitly on its
low-speed power and its instant response to his demands in the tightest of
sections.
Yamaha's
exclusive Autolube lubrication system provides the precise amount of oil needed
by all working parts of the engine, enabling maximum use to be made from the
charge of fresh petrol being drawn-in for every firing stroke.
Reed
valve Torque Induction aids the engine`s instant response characteristics. Throughout
the engine, quality lightweight materials have been utilized to the full to ensure
the best possible power-to-weight ratio.
Transmission
Matching
the power output of this lightweight trials machine perfectly is the TYl75
6-speed, wide ratio gear box. Every gear has been specifically selected for the
use to which it will be put, either in competition on the sections themselves,
or maintaining tight schedules on road or trail between the sections.
Frame and Forks
The
trials market demands the toughest frame with the lightest possible weight. Yamaha
have incorporated a double-cradle frame of high tensile steel in the TYl75. The
engine is tidily mounted at the best possible point to achieve optimum balance.
The front forks are guaranteed as the best in the l75 cm3 trials world. They
have exceptionally long (160-mm) travel, and considerable thought has been
given to making them strong enough to resist the inevitable harsh treatment
which they will receive, while helping to provide the rider with one of the
leading trials machines in the world.
Rear Shock Absorbers
Superbly
responsive hydraulic rear shock absorbers have been tuned for trials work. Readily
adjustable to 5 different settings, the shock absorbers are more than adequate for
every known aspect of trials-going.
Brakes
Trials
riding tackles dust, water, mud and grit, but Yamaha engineers have developed the
special labyrinth seal, double-ridge brake plates which prevent any foreign matter
from entering the brake drum. Smooth and positive control of braking is thus
guaranteed throughout the competition life of the machine.
Special Features
Yamaha`s
trials machines have many special features developed by the world`s top riders and
adapted on the competition machine production lines in Japan.
Check
out the well protected street legal speedometer behind the left-hand fork leg. The
entire ignition system has been designed to guarantee a large efficient spark at
ultra-low speeds and the crankshaft mounted magneto aids the overall flywheel effect.
A rear
chain tensioner automatically absorbs any slack in the chain and so prolongs
chain-life as well as aiding positive rider-control at all the infinitely
variable speeds which are called for from every
trials
machine.
The
whole underside of the frame and engine are protected by a rugged light-aluminium
"bash plate". The moulded aluminium
plate absorbs all shock contact and on really difficult terrain. prevents the
machine
from sinking into deep mud.
A
silencing system designed to protect the environment and to maintain perfect
peace during countryside use is a natural Yamaha feature. because, as far as
trials are concerned, "less sound means more ground".
SPECIFICATIONS
ENGINE
Type 2-stroke. Torque
lnduction. Single
Displacement
171 cm3
Bore
& Stroke 66 x 50 mm
Compression
ratio 5.8 : 1
Lubrication
system Autolube
Starting
system Primary kick starter
Primary
transmission Gear
Final
transmission Chain
Gearbox 6-speed
Carburettor
VM22SS
Clutch Multi-plate, wet
Battery
6 V, 4 AH
Ignition
type Magneto. CB/CoiI
DIMENSIONS
Overall
length 1.955 mm
Overall
width 835 mm
Overall
height 1,100mm
Seat
height 750 mm
Wheelbase 1,265 mm
Weight
(net) 81 kg
Fuel tank
capacity 4.5 lit.
Oil
tank capacity 0.3 lit.
Tires Front 2.75-21 - 4PR
Rear 4.00-18 - 4PR
Brakes Front Drum
Rear Drum
°Specifications
subject to change without notice.
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