PBI Sprockets:"
Precision Made for
Powerful Performance!
Performance begins on a CNC Lathe which
machines the sprocket blank and hub to .
precise tolerances of ± .0005 ". The hub
'
is an integral part of the sprocket for exact alignment and up to 50% more contact
area on the countershaft.
M otorcycl e To u ring by Bill Stermer
shou ld mak e a welcom e additio n to
th e library of anyone wh o likes to
hop on hi s o r her bike and p u t down
so me mil es. T h e 144 page pa per back
'has sectio ns descr ib in g h ow to select
your bi ke. troublesh ooting. how to
ou tfit your bike for a lon g trip. plus
tips on cloth ing a n d gea ri ng u p for
nasty wea ther. Check yo ur deal er or
books tore fo r a co p y. You can a lso
order by m a il from HP Books. Dept.
CN. P.O . Box 5367. T ucson. AZ85703.
In clude $7.95 p lus $ 1 for pos tage a n d
han dli ng for each copy.
Computer memory controls the mach ine for
each sprocket. Manufacturer's specifications
for all sprockets are stored in the computer
memory. Computer memory controls the
lathe so the tolerances are the same for '
each sprocket, the first and the last.
Perfect roundness of spline and sprocket
blank assure precise fit on the mandrel for
machining of tooth form and the spline teeth.
With these exact tolerances, the sprockets '
transfer power evenly, smoothly and quietly.
T he Nava GT h elm et features a pol ycarbo na te she ll a nd m eets DOT a nd
SHCA a p p roval. It has m anuall y
operated visor wh ich ca n be adjus ted
by the ride r for the a mo u nt o f ventilation des ire d. T he h elmet comes in a ll
p opular sizes. Colors ava ila ble are
black. white. yellow. light blue. dark
blue an d red. See your Na va dea ler for
more info.
a
And PSI has a full line of sprockets, countershaft and rear. Standard and all optional sizes
are available, 30 to 72 teeth , for selection of
desired ratios matched for event, weather
conditions, gas mileage or altitude. Choose
from heat-treated, steel countershaft
sprockets or 7075T651 aluminum rear ,
sprockets for tortuous conditions.
ASK FOR THEM BY NAME. PSI Sprockets
have been made for two decades by people
who appreciate biking and build sprockets for
performance. They know from experience the
demands on equipment. They participate in
road , motocross, and enduro events and
take pride in translating their experience into
the craft of making sprockets. They make
them right and they make them tough. PSI
Sprockets. Ask for them at your local ~ealer.
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