GLOSSARY
Bogie Wheels
The wheels that form part of the suspen-
sion system. They absorb shock, act
as
stabilizers, and exert downward pressure
on
the track
so
that it will have continued
contact with the snow surface.
Bore
The inside diameter of the cylinder.
Brake Drum
The outer side wall of the fixed half of
the driven pulley. The pressure of a brake
shoe, or disc puck, applied against the
brake drum, or brake drum disk,
is
the
principle used to slow or stop the vehicle.
Breaker Points
An
electric switch which controls the
firing time of the spark plug.
Cam Slider Shoes
Nylon reinforcements that aid
in
the fric-
tion-free
in
and out movement of the
sliding half of the driven pulley.
Carburetor Flange
That part of the carburetor body by which
the carburetor is secured to the engine.
Centrifugal Governor
The cup portion of the drive pulley con-
taining four flyweights.
30
Chain Tensioner
Self-adjusting, friction-free block, used
to maintain correct drive chain tension.
Ski Runners
Replaceable steel rods located under the
skis, that aid steering control and also
prevent ski wear
on
hard surfaces.
Sprockets
Polyurethane or rubber toothed wheels,
located
on
drive and rear axles. The drive
sprockets tran$mit power from the drive
axle to the track. Rear sprockets aid
in
proper alignment of the running track.
Stroke
The depth of travel of the piston. Stroke
mLJltiplied by the surface area of the cyl-
inder
is
the displacement.
Throttle
A butterfly valve governing the ratio of
fuel mixture entering the engine.
Tie Rods
Steel rods which link the steering column
to
the steering arms. Lengthening or
shortening the tie rods determines ski
alignment.
Cross Shaft
A transverse shaft that attaches the bogie
wheel set
to
the frame.
Drive Chain
Links the driven pulley shaft with the drive
axle.
Drive Pulley
A variable pitch pulley which transmits
power from the engine to the driven pul-
ley by means of a drive belt.
Driven Pulley
A variable pitch pulley which transmits
power from the drive pulley to the drive
axle by means of a drive chain.
Displacement
The volume of air displaced by a piston
in
a single stroke, measured
in
cubic
centimeters.
Electrolyte
The solution
in
a battery (distilled water
and sulphuric acid) which acts
on
the
battery plates
to
produce electric cur-
rent.
Inserts
Steel clips that protect the track sprock-
ets and track against wear.
Link Plate
A pivoting steel plate that links the rear
axle
to
the frame.
Rectifier
An
electrical device used to convert al-
ternating current into direct current there-
by allows battery charging.
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