1977 Yamaha XS500 - 2-Page Vintage Motorcycle Ad

Description

1977 Yamaha XS500 - 2-Page Vintage Motorcycle Ad
Original, vintage motorcycle advertisement
Page Size: Approx. 8" x 11" (21 cm x 28 cm) each page
Condition: Good
The 1977 Yamaha XS500
A study in design. An education in engineering.
Double loop tube frame.
YAMAHA
built,you 11 buy aYamaha
's' aluminum
wheels.
Fade-resistant \
disc brakes.
foverhead
cams.^
‘Cafe-Racer'\
•*SZ\styling.
The Yamaha XS 500 frame:
inter-connected triangles
for strength and rigidity.
The 1977 Yamaha XS 500 is unlike other
twin cylinder 500cc street motorcycles.
From the compact engine to the precisely
engineered frame, it is a completely dif-
ferent all-around street machine.
Many frames form a 5-sided
X polygon: without reinforce-
ment, they flex.
7 The frame design explained.
7 The XS 500’s frame is as unique as its
engine. (See illustration.) Rigidity is
its most important aspect. It is a full double
loop tube, with a third tube connecting
the steering head to the rear cradle.
Gussets reinforce the deep welds; the
swingarm is further gussetted. These inter-
connecting triangular shapes mean
strength and rigidity.
it’s either a
GP*\
conventional
twin or an
overly-wide four. The
Yamaha XS 500, however, is neither
Instead, it is a sophisticated
Double Overhead Cam-
.
shaft eight-valve twin.
And that's a feature
/
normally reserved
for Grand Prix
//
Formula 1
//. y
racecars.
//. '
The perfect fit.
The extraordinarily narrow, compact
XS 500 engine fits perfectly into its frame
to form a more perfect union. The engine
Maximum power,
minimum displacement.
The layout of a typical 500cc street
motorcycle is _
predictable:
The standard extras.
The XS 500 has
other standard fea-
tures to substantiate
its education in en- ZZ/***^
gineeringexcel- 4
lence. Fade-resist-
ant front and rear disc
brakes stop the rider fast
and straight. In the front, v
the caliper is mounted be-
hind the fork leg for added
steering quickness.
Seven-spoke cast-
\ aluminum wheels //^
-1 are virtually ZA
maintenance-free,
yr-”
sporty7, and aid 'X c
; 3 steering stability. 'X
y Adjustable rear shocks '
\ have five positions.
ZJ This allows for fine
tuning for load and road
conditions, and rider comfort.
The overall
performance.
Perhaps the overall
performance of the
1977 XS 500 is best
judged by the rider him-
self. Because, for all of the
improvements and
JJ amenities of the
''engine, the frame design
and the features, the
ultimate test is a ride.
Once experienced,
you’ll instinctively
know what has
taken over 500 words to explain.
yb -5-b with two valve
by. 'j springs of different
rates to resist “float”
during high-speed perform-
ance. And Yamaha valves
, are specially-treated with
Stellite to allow the use
" Cz of low-lead or unleaded
gasoline.
Rigidity means virtually flex-free
handling; excessive flex (as shown in the
illustration to the right) means instability
and vibration.
And, conveniences include a
push-button electric starter, Yamaha’s
exclusive self-cancelling
turn signals, and
r an external cam
chain adjuster.
Eight valves. Four per
cylinder. Driven by two
cams, each cylinder has
two valves for air/fuel
intake and two for z
exhaust. More
/\
valve area means
\l
improved high-
rpm breathing /'
capability7. And ’! fT"
more efficiency /
( y
for the displace- I ' . .;.
ment. With this fb1 •! _■
free-breathing ;
capability7, and W? -
a 9000 rpm
red line, it is vT-y
important to have
strong, lightweight
valves.
I
Each of the /
valves is coupled
/
fits into
the precise
location
necessary for a low center of gravity,
as well as for the proper front and rear
distribution of weight.
This union of frame and engine makes
the XS 500 a versatile performer, suitable
for back roads or freeways. A motorcycle
with the correct balance and stability for
cornering precision and steering agility.
16010 RL- 16363 d77da12