7.9
CLUTCHING
CENTRIFUGAL DRIVE SYSTEM
THEORY OF OPERATION
The graph illustrates what occurs in a properly tuned
snowmobile drive system during an idle speed to WOT (wide
open throttle) pull. Note that the shift out overrev occurs for a
brief amount of time and drops back to the desired engine
operating RPM. The low and high ratio lines are a function of
component design.
NOTE: Shift out overrev is not detrimental to overall
efficiency of the drive system as long as the RPM
drop does not fall below the desired operating RPM.
The use of the new drive system technologies,
tighter tolerance components and refined drive
system calibration in Polaris snowmobiles has
virtually eliminated shift out overreving.
DRIVE CLUTCH
OPERATION
The drive, or primary, clutch is an RPM sensing device. The
main functions of the drive clutch is to control the neutral
RPM speed, initial engagement RPM, and desired engine
operating RPM. The drive clutch works by using the principle
of centrifugal force to react to engine RPM. At idle speed, the
moveable sheave is held open by the drive spring pre-load
force. As engine speed increases, the centrifugal force
generated by the clutch weights will overcome the drive spring
pre-load force, and begin to close the moveable sheave. This
action engages, or “pinches" the drive belt.
In a properly tuned clutch, the desired operating RPM should
be reached immediately after clutch engagement under full
throttle (WOT) conditions. The desired engine operating RPM
is the recommended operating RPM listed for each model.
This information can be found in each models' general
specification table. To ensure optimum power, the
recommended operating RPM must be maintained throughout
the upshift and backshift modes.
Summary of Contents for SUPERSPORT 2006
Page 48: ...NOTES SPECIFICATIONS 1 48...
Page 55: ...2 7 GENERAL SAE TAP DRILL SIZES METRIC TAP DRILL SIZES DECMIAL EQUIVALENTS...
Page 60: ...2 12 GENERAL SPECIAL TOOLS...
Page 61: ...2 13 GENERAL...
Page 62: ...2 14 GENERAL...
Page 106: ...4 18 CARBURETION...
Page 139: ...6 27 ENGINE 340 550 ENGINE REBUILDING 10 11 3 4 12 13 5 2 14 1 16 15 16 9 17 6 7 8...
Page 156: ...7 12 CLUTCHING 1 1 2 3 4 5 6 7 18 17 10 8 9 13 12 11 15 16 14...
Page 192: ...8 20 FINAL DRIVE...
Page 200: ...10 2 FRONT SUSPENSION STEERING FUSION IQ RMK 600 RMK Fusion 14 78...
Page 201: ...10 3 FRONT SUSPENSION STEERING EDGE RMK Apply Polaris All Season Grease to all zerks...
Page 202: ...10 4 FRONT SUSPENSION STEERING 42 5 EDGE Apply Polaris All Season Grease to all zerks...
Page 203: ...10 5 FRONT SUSPENSION STEERING WIDETRAK Apply Polaris All Season Grease to all zerks...
Page 244: ...11 28 REAR SUSPENSION...
Page 256: ...12 12 CHASSIS HOOD...
Page 282: ...13 26 ELECTRICAL...
Page 288: ...13 32 ELECTRICAL...
Page 289: ...14 1 WIRE DIAGRAM 2006 600 FUSION HO HOOD...
Page 290: ...14 2 WIRE DIAGRAM 2006 HO RMK HOOD...
Page 291: ...14 3 WIRE DIAGRAM 600 HO FUSION RMK CHASSIS...
Page 292: ...14 4 WIRE DIAGRAM 600 HO FUSION RMK CHASSIS CALL OUTS...
Page 293: ...14 5 WIRE DIAGRAM 700 900 ENGINE...
Page 294: ...14 6 WIRE DIAGRAM 700 900 ENGINE AND ENGINE CALL OUTS...
Page 295: ...14 7 WIRE DIAGRAM 700 900 CHASSIS...
Page 297: ...14 9 WIRE DIAGRAM 340 550 FUJI FAN ENGINE CHASSIS...
Page 298: ...14 10 WIRE DIAGRAM 500 FUJI ENGINE CHASSIS...
Page 299: ...14 11 WIRE DIAGRAM 500 600 IBERTY ENGINE CHASSIS...