1968 Petersen Motorcycle Repair Manual Bob Greene Editor - Vintage Book

Description

1968 Petersen Motorcycle Repair Manual Bob Greene Editor - Vintage Book
192-Pages
TWO-STROKE
6 Theory
20 Vincent: A Better Idea?
24 Trouble-Shooting
38 Tuning
46 Modifications for Street
58 Modifications for Racing
68 Build a Pumper Carb
FOUR-STROKE
78 Theory
108 Carburetion
114 Ram Tuning
120 Ignition
124 Three-Cylinder Triumph
126 Trouble-Shooting
142 Tuning
MATH & FORMULAS
182
Volume
183
Cylinder Displacement
184
Compression Ratio
185
Valve Lift
186
Piston Speed
186 Horsepower & Torque
188 Gear Ratio
Motorcycle Repair Manual - sounds frighteningly
efficient, doesn’t it! Well, we really didn’t intend
that it have such a strict connotation, but
sometimes you can only bend the language so far
within the limits of a brief title. Truth is,
motorcycles should never be work, but a real ball
all the way, whether riding or tuning, and it was in
this vein that our little offering was assembled.
If you have half as much fun reading it as we did
building it, the book’s success is guaranteed.
To give everyone a fair shake, we elected to split
it down the middle — two-stroke and four-stroke —
with an umbrella of general information applicable
to both. The rub, of course, comes in finding
qualified mechanics and tuners with not only the
knowledge but the time to impart these pearls of
wisdom on the broad level necessary to be helpful to
riders of all brands. It wasn’t easy.
Ultimately we selected Leo Lake on behalf of the
two-stroke contingent and Jerry Branch for the
four-strokers. Both are nationally renowned; Leo
for his work as Race Manager for the all-conquering
Daytona Yamahas three years in a row, and Jerry
for his vital influence on the Harley-Davidson racing
program for the last decade. These guys are
“real people.”
Although both are recognized for their outstand-
ing tuning prowess on the big, hard tracks, both
are true enthusiasts away from the professional
ovals as well. Leo not only cuts a mean trail in the
wilderness but logs more street miles per year than
any other six riders I know. And in addition to his
consuming duties as Racing Director of Yamaha
International, he still finds time to actively
participate in motorcycle club life. Jerry is all nuts
and bolts when he isn’t out beating the hills with
his hopped-up trail bike. In contrast to the
fire-belching 45 Harleys that Jerry builds for the
nationals, he has a penchant for the tiny “pop corn
roasters that fall in the 125cc category. He’s
continually striving to surprise his track cronies
with a little Kawasaki or Harley-Davidson Rapido
t at s been loaded to the eyeballs with a home-built
pumper carb conversion or hot cylinder setup.
He careful if he asks you to take one of his pets
for a ride.
...
That's what this hook is all about. We, Tony
Murphy and I, have tried to keep the whole package
down to earth, with commonplace vernacular in lieu
of the usual stiff, if not lofty, phrasing too often
found in a semi-technical treatise. And this is a very
natural place to introduce Tony, one of America's
truly talented road racers who has just joined the
Petersen Publishing family, fortunately in time for
this book. Having served as a racing manager
himself, Tony is certainly qualified to embellish the
chapters dealing with motorcycle theory. And
with a stable of five racers of his own — from big
Norton double knocker to dual OHC Ducati 125 —
Tony's got to be a trouble-shooter, if not a most
fluent tuner.
In the bits and pieces department that Tony and
I threw in for editorial mileage we've fallen back
on what were felt to be some of the tips and tidbits
that only an enthusiast with traces of gray might
conjure up from the school of hard knocks. We hope
you'll find it useful some dark night when you're
a million miles from nowhere and that obstinate
little monster between your boots refuses to respond
to your best kick or choicest vocabulary. Maybe
only then will the Motorcycle Repair Manual be
afforded its most flattering review with such a
simple utterance as: “Sure glad I read that bookl"
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