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Post Your Clutch Setup

cannondale27

cannondale27

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Manitowoc,WI
Use this Format only. No replies except in PM. Lets keep this simple and short.

Copy paste into your post and fill in the specs.
Power Mods=
Clutch Kit=
Belt=
Belt width and length=
Weights=
Helix=
Primary Spring=
Secondary Spring=
Wrap=
Machined for overdrive=
Machined for 8DN length belt=
OSP Deflection Adjuster w/plate removed=
RPMS at engagement Recall or Indicated=
RPMS at top speed and top speed Recall or Indicated=
Miles on sled=
Observations:
 
Last edited:

Power Mods=None Stock
Clutch Kit=Ulmer
Belt=8DN
Belt width and length=1.352
Weights=Ulmer 4washers heel,3washers tip
Helix=Ulmer
Primary Spring=Ulmer
Secondary Spring=Ulmer
Wrap=6-1
Machined for overdrive=No
Machined for 8DN length belt=No
OSP Deflection Adjuster w/plate removed=Yes
RPMS at engagement=3100 indicated
RPMS at top speed and top speed=9160@96mph recall
Miles on Sled=3100
Observations:
Want slightly smoother engagement,100 mph more often.
 
Last edited:
Updated 2/19/16

Viper XTX, stock gearing, 1.6 stock track
Power Mods=None
Elevation=0 to 1,200
Exhaust=MBRP can
Clutch Kit=Clutching on the cheap
Belt=8DN
Belt width and length=1.376
Weights=8FP
Helix=46/40
Primary Spring=GWG with 2mm shim
Secondary Spring=Pink
Wrap=6-1
Machined for overdrive=No
Machined for 8DN length belt=No
OSP Deflection Adjuster w/plate removed=No
RPMS at engagement=2,800
RPMS at top speed and top speed=9,050 @ 107mph (Do not remember the Recall on tach)
Observations: Loved the engagement, pull and top end. This is the setup that created the "Clutching on the cheap" (miles on sled was 2,300) Fuel mileage last year was 17.7mpg (See post #125 in this thread http://www.ty4stroke.com/threads/2014-sr-viper-mbrp-cans-8-10hp.128520/page-9

Mountain setup: 10,000 ft. Viper XTX, stock gearing, 2.25" Power Claw track 153" rails
Power Mods=Stingray's airbox mod with PC5
Elevation=10,000-11,000
Exhaust=EVO Header and Muffler
Clutch Kit=COTC
Belt=8DN
Belt width and length=1.372"
Weights=8FP ground down to 57 grams
Helix=43 stock
Primary Spring=GWG with 6mm shim
Secondary Spring=Pink
Wrap=6-1
Machined for overdrive=yes
Machined for 8DN length belt=yes
OSP Deflection Adjuster w/plate removed=No
RPMS at engagement=3,200
RPMS at top speed and top speed=8,900 @ 96mph (Recall on tach was 9,190 cause the low end was more than finish rpm)
Observations:High elevation cuts power, needed 10 grams less in the mountains. Great mountain setup! (Miles on sled 2,500)

A heavy hitter setup I tried in Houghton, 12/20/14, Viper XTX, stock gearing, 2.25" Power Claw 153" rails
Power Mods=Stingrays airbox mod with PC5
Evelvation=0 to 1,200
Exhaust=EVO Header and Muffler
Clutch Kit= Big Venom Kit
Belt=8DN
Belt width and length=1.372
Weights=Heavy Hitters, heel loaded, 3/8 steel in tip and in middle
Helix=43 stock
Primary Spring=Thunder Products black
Secondary Spring=Yamaha silver
Wrap=2-0
Machined for overdrive=Yes
Machined for 8DN length belt=Yes
OSP Deflection Adjuster w/plate removed=No
RPMS at engagement=3,700
RPMS at top speed and top speed=9,000 all day @ 97mph (Recall on tach was 9,210 from touching rev limiter on take off, better rpms mid and top end)
Observations:Very hard pack with -5° temps. Never did get a full run as corners came too quick! (Miles on sled 2,700)

Viper XTX, stock gearing, 2.25" Power Claw 153" rails
Power Mods=Stingray airbox mod with PC5
Elevation=0-1,200
Exhaust= EVO header and muffler
Clutch Kit="Clutching on the cheap"
Belt=8DN
Belt width and length=1.373
Weights=8FP with 4.0 gram in tip
Helix=46/40
Primary Spring=GWG 3mm shim
Secondary Spring=Pink
Wrap=3-3 Machined for overdrive=Yes
Machined for 8DN length belt=Yes
OSP Deflection Adjuster w/plate removed=No
RPMS at engagement=2,700-2,800
RPMS at top speed and top speed= 104mph (Recall 9,147) Verified by Shagman
Observations: Freshly groomed trail with only 1 track on it. Was a full out mile run (Miles on sled 2,700)

A heavy hitter setup I really like :) 2/28/15, Viper XTX, stock gearing, stock track, stock skis
Power Mods=Stingrays airbox mod with PC5
Evelvation=0 to 1,200
Exhaust=EVO Header and Muffler
Clutch Kit= Heavy Hitters Thunder Products
Belt=8DN
Belt width and length=1.372
Weights=Heavy Hitters, heel 3/4" , 3/8 aluminum in middle, 3/8 aluminum with 1 thick washer in tip
Helix=43 stock
Primary Spring=stock (BSB)
Secondary Spring=Yamaha silver
Wrap=6-1
Machined for overdrive=Yes
Machined for 8DN length belt=Yes
OSP Deflection Adjuster w/plate removed=No
RPMS at engagement=2,400
RPMS at top speed and top speed=9,000 all day @ 110mph (107 GPS) (Recall on tach was 9,210 from touching rev limiter on take off, better rpms mid and top end)
Perfect conditions (Miles on sled 3,800)

Big Venom Kit on asphalt, 22/40 gearing along with EVO flash
Power Mods=Stingrays airbox mod with PC5
Evelvation=0 to 1,200
Exhaust=EVO Header and Muffler
Clutch Kit= Heavy Hitters Thunder Products
Belt=Gates Carbon Fiber 40C4340
Belt width and length=1.372
Weights=Heavy Hitters, heel 1" , 3/8 aluminum in middle, 3/8 aluminum in tip
Helix=43 stock
Primary Spring=stock (BSB)
Secondary Spring=Thunder Products Midnight Blue
Wrap=6-1
Machined for overdrive=Yes
Machined for 8DN length belt=Yes
OSP Deflection Adjuster w/plate removed=No
RPMS at engagement=2,400
RPMS at top speed and top speed=9,313 @ 112.96mph
 
Last edited:
I'll try to update as machine progresses and breaks in


SR Viper RTX LE 1.7" lug track, 21-49 (2.33) gearing-stock low windshield

Power Mods= MBRP Can-still to be installed
Clutch Kit= Ulmer
Belt= 8DN
Belt width and length=
Weights= Ulmer Super Tip 1 tungsten, 2 washers heel (9g)
Helix= Ulmer K
Primary Spring= Ulmer OPO
Secondary Spring= Ulmer Red
Wrap= 6-2
Machined for overdrive= Yes
Machined for 8DN length belt= Yes
OSP Deflection Adjuster w/plate removed= No
RPMS at engagement= 3,000-ish observed
RPMS at top speed and top speed= 8400 observed 80mph
Observations: Originally had 1 washer in tip, but I removed for now. Machine is still fresh with maybe 100 miles on it. Clutch kit was set up for can, but can has not been installed yet. Machine needs to grow into the clutching.
Conditions: Lake with somewhat packed snow, but still plenty loose. Did not have opportunity to try for major top speed run, but it does pull exceptionally hard then flattens out hard at mid to upper 70's
 
Last edited:
..Power Mods=Hindle header with stock muffler , Hurricane air box mod & PCV
Clutch Kit=Ulmers
Belt=8dn
Belt width and length=
Weights=Ulmers, Tungston plus 2 washers on heal, none in tip
Helix=Ulmer
Primary Spring=Ulmer
Secondary Spring=Ulmer
Wrap=6 and 2
Machined for overdrive=Yes
Machined for 8DN length belt=Yes
OSP Deflection Adjuster w/plate removed=No
RPMS at engagement=2800
RPMS at top speed and top 96 mph @ 8750.......... Tach recall 9180
Observations Rpm's still too low only 214 miles on sled
 
Last edited:
2014 XTX with 162 Camoplast 3 inch lug track, 7 tooth drivers - 200 miles
Elevation = 10k to 12k
Power Mods= Stingrays air box mod, MBRP can
Clutch Kit=Clutching on the cheap
Belt=8DN
Belt width and length=
Weights= 8FP cut down for altitude
Helix= Stock with spring pocket cut for anti bind by NOS-PRO
Primary Spring= GWG with 6mm shim
Secondary Spring= Stock spring
Wrap= 6-1 EDIT: wrap now 3-2 better launch now
Machined for overdrive=no
Machined for 8DN length belt=no
OSP Deflection Adjuster w/plate removed=no
RPMS at engagement=3600
RPMS at top speed and top speed= 9100, TBD determined
Observations: Mountain setup in that I am geared to 85mph top. Runs with or outruns 800 2 strokes, pulls hard to 75mph but have not had real long stretch to test actual top speed and where I ride top speed means very little. VERY happy with this setup
 
Last edited:
2014 XTX with 153 Powerclaw 2.6 inch lug track, 8 tooth drivers 21/50 gearing - 561 miles
Elevation = 10k to 12k
Power Mods= Stingrays air box mod
Clutch Kit=Clutching on the cheap
Belt=8DN
Belt width and length=
Weights= Super Rat cut down for altitude with 2.5 balls
Helix= Stock
Primary Spring= GWG with 7mm shim
Secondary Spring= stock
Wrap= 6-1
Machined for overdrive=no
Machined for 8DN length belt=no
OSP Deflection Adjuster w/plate removed=no
RPMS at engagement=3700
RPMS at top speed and top speed= 9100, TBD determined
Observations: Mountain setup in that I am geared to 80mph top. The Rat weights in testing gained 1/2 sled length from 0 to 60mph, also had a backshift that was incredibly fast. Also on braking and acceleration the rat weights made the sled feel more like a 4 stroke bike in that the recovery on acceleration was almost instant. Air box mod and Super Rat weights it runs even up with friends 800 Ski Doos, VERY happy with this setup.
 
Last edited:
Current setup in red.
2014 XTX Stock Gearing Stock Track 1.6"
Altitude= 800-1000
Power Mods= None
Clutch Kit= Clutching on the Cheap
Belt= 8DN
Belt width and length=
Weights= 8FP 4.7g tip, 3.2g middle
Helix= 46/40 Dalton
Primary Spring= Y-W-Y with 2-1 mm shims
Secondary Spring= Pink
Wrap= 6-1
Machined for overdrive= no
Machined for 8DN length belt= No but washers added to do the same thing.
OSP Deflection Adjuster w/plate removed= no
RPMS at engagement= 3200
RPMS at top speed and top speed= 106 mph @ 9000 rpm
Observations: Ran in all types of snow and all temps. In warm and mushy snow 8800 rpm @ 100-101 mph.

2014 XTX, OSP Turbo 6 # boost Stock Gearing Stock Track 1.6"
Altitude= 800-1000
Power Mods= Turbo Stage 1
Clutch Kit= Thunder Products Vemom Kit for Turbo
Belt= 8DN
Belt width and length=
Weights= 58.8g base, Tip-Small steel bolt with 2 thin washers, Middle-Large steel bolt
Heel 3/4" long set screw
Helix= 46/40 Dalton
Primary Spring= O-P-O with 2-1 mm shims
Secondary Spring= Pink
Wrap= 6-1
Machined for overdrive= yes
Machined for 8DN length belt= Yes
OSP Deflection Adjuster w/plate removed= no
RPMS at engagement= 2800
RPMS at top speed and top speed= 117 mph @ 9126
Observations: Great setup. Best throttle response yet. Run out of gear on top end.

2014 XTX, OSP Turbo 6 # boost Stock Gearing Stock Track 1.6"
Altitude= 800-1000
Power Mods= Turbo Stage 1
Clutch Kit= Clutching on the Cheap
Belt= 8DN
Belt width and length=
Weights= 8FP 8.2g tip, 8.0g middle
Helix= 46/40 Dalton
Primary Spring= B-S-B with 1-1 mm shims
Secondary Spring= Pink
Wrap= 6-1
Machined for overdrive= yes
Machined for 8DN length belt= Yes
OSP Deflection Adjuster w/plate removed= no
RPMS at engagement= 2800
RPMS at top speed and top speed= 117 mph @ 9126
Observations: Good setup. Run out of gear on top end.

2014 XTX, OSP Turbo 6 # boost Stock Gearing Stock Track 1.6"
Altitude= 9500-11000'
Power Mods= Turbo Stage 1
Clutch Kit= Clutching on the Cheap
Belt= 8DN
Belt width and length=
Weights= 8FP Empty
Helix= 46/40 Dalton
Primary Spring= Y-G-Y
Secondary Spring= Pink
Wrap= 6-1
Machined for overdrive= no
Machined for 8DN length belt= No but washers added to do the same thing.
OSP Deflection Adjuster w/plate removed= no
RPMS at engagement= 2900
RPMS at top speed and top speed= Hitting limiter past 95 mph. No long runs so I didn't adjust.
Observations: Good setup, I think adding a 3.2g rivet in the tip would solve the limiter problem. Only had 2 days to ride so I rode instead of testing.
 
Last edited:
2015 RTX DX Turbo boost Stock Gearing Altitude= 1500 ft
Power Mods= Hurricane stage 1
Clutch Kit= My own
Belt= 8jp
Belt width and length=
Weights= Dalton DYTA-1 with 1.3 grams added
Helix= 46/40 Dalton
Primary Spring= Orange Dalton
Secondary Spring= White
Wrap= 6-2
Machined for overdrive= yes
Machined for 8DN length belt= no
OSP Deflection Adjuster w/plate removed=
RPMS at engagement= 2900
RPMS at top speed and top speed= 121 mph @ Hitting limiter 9150. Out of gear.
Observations: Good setup but missing a little bottom end for trails. Going back to my old setup with STM weights with different helix and 8dn belt .Will post results after new years
 
Power Mods= ulmer k&n's an pcv
Clutch Kit= my own
Belt= xs 805
Weights= hauck vp's
Helix= 51-43
Primary Spring= hauck orange 2mm shim
Secondary Spring= ulmer red
Wrap=6-1
Machined for overdrive=no
Machined for 8DN length belt=yes
OSP Deflection Adjuster=no
RPMS at engagement=4100
RPMS at top speed and top speed=8800
Observations: 84mph @ 500' grass
 
2014 LTX SE 3000 miles. Rider weight 300+


Power Mods=k&n intake, power commander, MBRp
Clutch Kit=ulmer
Belt=8DN
Belt width and length=
Weights=6grams in heel 1 gram in tip
Helix=ulmer
Primary Spring=ulmer
Secondary Spring=red
Wrap=6-2
Machined for overdrive=yes
Machined for 8DN length belt=yes
OSP Deflection Adjuster w/plate removed=No
RPMS at engagement=3100
RPMS at top speed and top speed=8900 @ 104mph
Miles on sled=3000
Observations:runs strong up to 90. Rider weight slowing it down. 4-2 pattern studs. Need to get RPM's up a bit. To get more speed need to add more horsepower bottom line.
 
Power Mods= mbrp trail can
Clutch Kit= clutching on the cheap
Belt= 8dn
Belt width and length=
Weights=8fp 3.5 g in the tip only
Helix= 43/41
Primary Spring= gwg
Secondary Spring= stock pink
Wrap= 6/1
Machined for overdrive= nope
Machined for 8DN length belt no
OSP Deflection Adjuster w/plate removed= yes
RPMS at engagement= 2800
RPMS at top speed and top speed=9120 at 100 mph
Miles on sled= 1400
Observations:[/QUOTE] 144 studs 160 lbs 2400 ft to see 100 mph.
 
Power Mods=hindle can, ulmer pcv and intake, cr10ek plugs
Clutch Kit=ulmer
Belt=8jp gates gforce
Belt width and length=
Weights=heel 1 tungsten 3 washer, centre 0, tip 1 washer
Helix=ulmer
Primary Spring=ulmer
Secondary Spring=ulmer
Wrap=
Machined for overdrive=no
Machined for 8DN length belt=no
OSP Deflection Adjuster w/plate removed=yes
RPMS at engagement Recall or Indicated=
RPMS at top speed and top speed Recall or Indicated=
Miles on sled=5000km
Observations: top speed 160km to 165km conditions vary with the slip on and clutch. More top end is not my goal. I would like the clutching more aggressive like my fx nytro was but that was an entirely different clutch kit super torquer heelclicker drag and fly. Have not been able to test due to poor conditions as I now have a pcv, intake, and cr10ek plugs.
 
Last edited:
Power Mods= MBRP can, Excell cold air intake
Clutch Kit=
Belt= 8JP & 8DN
Belt width and length=
Weights= Hauck VP weights. 64g base weight
0.0g hole #1, 4.4g hole #2, 6.2g hole #3
Helix= 45/39
Primary Spring= Hauck black
Secondary Spring= Hauck silver
Wrap= 6-1
Machined for overdrive=
Machined for 8DN length belt=
OSP Deflection Adjuster w/plate removed=
RPMS at engagement Recall or Indicated= 3300-3400
RPMS at top speed and top speed Recall or Indicated= 8950-9050. 100-ish
Miles on sled= 2880
Observations: 8DN belt pulls a couple of more mph. 8JP feels more responsive.
 
2015 mtx 153 mpi turbo
Clutch kit=hauck
Belt=8jp
Weights= Hauck VP
4.3 inner 4.8 middle 5.3 tip
Primary spring Hauck black
Secondary spring Hauck silver
Wrapped 6-1
Engagement=2900
Max rpm8950-9050
Observations =going to add little more weight as motor is loosening up very nicely also going to try 8 dn belt
 
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