Post Your Clutch Setup

[MCApex44]

2014 RTX SE
Power Mods= Ulmer HI-Flow Intake, Ulmer Muffler Mod, 135studs
Clutch Kit= Ulmer
Belt= 8DN
Belt width and length= ?
Weights= Heel: T-2, Mid: 0, Tip: 1-0
Helix= K
Primary Spring= OPO
Secondary Spring= Black
Wrap= 6-2
Machined for overdrive=
Machined for 8DN length belt= Yes
OSP Deflection Adjuster w/plate removed= NO
RPMS at engagement Recall or Indicated= 3000 +/-
RPMS at top speed and top speed Recall or Indicated= 8950
Miles on sled= 1,017
Observations: Last year, before I added the Hi-Flow Intake, Muffler Mod and had machined for 8DN (I was running the 8DN shimmed last year) the best I got was 92mph @8800 rpms but was a dog in the mid. This year, first run only got 8350 rpm but pulled 96mph on plowed road. Made clutching changes to go with the hi-flow intake and mod muffler and machined for 8DN and we now have it at 8900-9000 rpms. Feels pretty strong down low and in the mid. Still need conditions and area to see if she gained any top speed now that rpms are at 8900+.

 

[sixstringorsnow]

2014 ltx se
Power Mods=Excell air box mod, mbrp can
Clutch Kit= on the cheap
Belt= 8dn
Belt width and length=
Weights= 8fp 3.1 in tip
Helix=40/46
Primary Spring=GWG 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 Recall or Indicated=2800
RPMS at top speed and top speed Recall or Indicated=9060/9160
Miles on sled=4500
Observations: Sled is studded. If the track spins it revs right up and goes really well to 90 and starts hitting rev limiter after that. If the sled hooks up only revs 8300 until about 70mph and revs to 8900 or so and pulls like a train to 90. Top speed on plowed rd. 99mph I need to fine tune it so it pulls rpm down low when it hooks up.

 

[happytrails]

Power Mods=none
Clutch Kit=COTC
Belt=8DN
Belt width and length=1.360 new
Weights=8FP 3.1 gram rivot in tip with .075 hole drilled through total weight 70.4
Helix=45/39 Pioneer with .080 washers under posts
Primary Spring=GWG .130 shims
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 Recall or Indicated=2800
RPMS at top speed and top speed Recall or Indicated=8950 at 100 mph. recall show 9050 probably from launch.
Miles on sled=1200
Observations:2014 ltx se with 144 mega bites down the middle. sled is extremely responsive with very smooth engagement. work in progress still.

 

[chad26]

Power Mods=mbrp trail can
Clutch Kit=COTC
Belt=8DN
Belt width and length=New i think it was 1.36
Weights=8fp weights with no rivots at this time
Helix=Stock 43 with .072 washers behind helix
Primary Spring=GWG with 2 1mm shims and 7mm shims per Stingray719
Secondary Spring=Pink
Wrap=6-1
Machined for overdrive=n/a
Machined for 8DN length belt=n/a
OSP Deflection Adjuster w/plate removed=no
RPMS at engagement Recall or Indicated=with 2-1mm shims 3100 and 7mm shims 4500
RPMS at top speed and top speed Recall or Indicated=with 2mm shims 9050 at 91 mph in a 300-350 yards 7mm shims 8800 at 73mph in same distance
Miles on sled=410 miles
Observations with the COTC with 3.5 grain rivits in the tip was 8700 rpm at max 81mph. Talked with Stingray719 about setup for yellowstone and he told me to take the 3.5 rivots out and the 7mm shims in the primary spring. WOW what a difference! ! Running with no rivots in the weights now at 710 sea level with 2mm shims its 0 to 70 in 100-150yds and 8800 to 8900 rpms at that distance. Now with the 7mm shims in alls I can say is hold on...not great top speed but corner to corner put a big fricking smile on my face!
Thank you for the imput from this forum.
Big thanks to Stingray719
Nos-pro
Shagman!

 

[tapex_07]

Power Mods= MPI Mtn kit @ 6.2psi w/ out of hood intake
Clutch Kit= my own
Belt= 8DN or 8DN
Belt width and length= both new
Weights= STM 60y 5t, 0m, 3h = 73.3g
Helix= straight 45*
Primary Spring= p-g-p
Secondary Spring= white
Wrap= 6-1 or 6-2 depending on snow
Machined for overdrive= no
Machined for 8DN length belt= no
OSP Deflection Adjuster w/plate removed= yes
RPMS at engagement Recall or Indicated= 3900
RPMS at top speed and top speed Recall or Indicated= 9150
Miles on sled= 230
Observations: no studs, running Ice Screws in all the lug tips, track is cut down to 1.25". Stock gearing. Sled pulls good, on occasion it bounces Rev limiter out of the hole once or twice then backs to 87/88 and creeps to 9200. Low belt dust. Only have seen 112, twice on hard pack no ice and that took a while to get there. 107 in 1/4 mile on a plowed road on the lake. I would have thought it would pull better mph than that.. but corner to corner on the trail (25 to 80) it's a monster! I have tried a couple different locations with washers, but on the trail this seems to be working. I would like to try a higher top gear and see what that does.
Stock it pulled 96 mph with less than 100 miles on it.

1-13-15 update:
Rode today, added 1 wsher to the middle location (76.5grams total) and I was still bouncing limiter evertime I stabbed it. So I guess I'll be adding more weight!! I think its braking in nicely and building more and more power! No new mph runs, as we didnt have any good stretches.

 

[Schlorven_]

Viper XTX LE Track PC 2,25 Luggs-Elevation 0-3000 feet over the see, 200 lbs rider =)
Gearing=Stock 21/41
Power Mods=Stock
Clutch Kit=allmost the same that i have on the Nytro XTX
Belt=8DN
Belt width and length=
Weights=Supertip 50Y, 4g heel, 0 middle, 0 tip......so far.
Helix=Dalton 46/40
Primary Spring=Yamaha O-P-O
Secondary Spring=Dalton red
Wrap=6-2
Machined for overdrive=no
Machined for 8DN length belt=no
OSP Deflection Adjuster w/plate removed=
RPMS at engagement Recall or Indicated=~3800
RPMS at top speed and top speed Recall or Indicated=9000-9100
Miles on sled=800KM

Observations: Hitting rev limit from standing still, but then laying spot on 8800-9000 in 1m snow and on trail. Dont hitting the limit when driving at 30mpg and giving the matchine WOT, 85 mph, havint try it for top speed because of the track and lugg.
Gooing to try the 21/49 gearing to see any improvment.

 

[yukon yamaha]

Viper XTX SE Track PC 2,25 Luggs-Elevation 0-3000 feet over the sea, 200 lbs rider =)
Gearing=Stock 21/41
Power Mods=stroker crank, pistons, pcv & auto tuner, ported and polished head, k&n intake, full Hindle exhaust, Avid drivers, ect ect
Clutch Kit=none
Belt=8JP
Belt width and length=
Weights=Dalton 58 g weights empty.
Helix= Yamaha 39
Primary Spring=Yamaha P/P/P
Secondary Spring=Yamaha White
Wrap=6-3
Machined for overdrive=no
Machined for 8DN length belt=no
RPMS at engagement Recall or Indicated=~3800-4000
RPMS at top speed and top speed Recall or Indicated=9000-9100
Miles on sled=725KM

 

[Byam]

0-2 ooo ft 2015 ltx ,96 stud, 24-50 gear
Power Mods=Mpi trail 4,5 psi ,EBC
Clutch Kit=Myself
Belt=8dn
Belt width and length=------------
Weights=Gforce magnetic
Helix=51-45 oem. (Gforce spacer)
Primary Spring=b/s/b
Secondary Spring=Pink
Wrap=3-3or 6-1
Machined for overdrive=No ( fixed primary sheave Gforce)
Machined for 8DN length belt=No
OSP Deflection Adjuster w/plate removed=No
RPMS at engagement Recall or Indicated=~~3500-3700
RPMS at top speed and top speed Recall or Indicated=920o Best 174 km/h (GPS)178speedo
Miles on sled=7 oookm
Observations:i Think the sled can go 5-10 km/h faster maybe more... I will try diferent setup this year and different gearing 24-48
Wrap 6-1 better for backshift,response but 3-5 km/h slower on top end

 

[RTX]

Power Mods= Evo muffler
Clutch Kit= Cotc
Belt= 8DN
Belt width and length=
Weights= 8fp 3.5 grams in tip only
Helix= BDX 46/40 shimmed .080
Primary Spring= Green white green with 2 shims
Secondary Spring= Stock
Wrap= 6/1
Machined for overdrive= No
Machined for 8DN length belt= No
OSP Deflection Adjuster w/plate removed= Yes
RPMS at engagement Recall or Indicated= Dont remember
RPMS at top speed and top speed Recall or Indicated= Hitting rev limiter constantly
Miles on sled= 1700
Observations: constant hitting revlimiter. Need more weight in clutch which was done over the summer.
Also noticed i need an EVO reflash real real bad!! Lol

 

[Studroes144]

Power Mods=Stage 1 mpi turbo
Clutch Kit=
Belt=Tried 8jp, 8dn and gates
Belt width and length=
Weights=D&D magnaforce
Helix=Stock 43
Primary Spring=Orange pink orange
Secondary Spring=Stock pink
Wrap=6-2
Machined for overdrive=No
Machined for 8DN length belt=No
OSP Deflection Adjuster w/plate removed=No
RPMS at engagement Recall or Indicated=Indicated 27-2800
RPMS at top speed and top speed Recall or Indicated=116 mph at 8900 indicated
Miles on sled=3000-3500
Observations:8jp and 8dn posted quicker times on radar and had more fun factor, 8jp belts didn't hold up, 8dn held up well. Gates carbon belt would get too grippy for trail riding and pulled down rpm. Gates belt posted consistently faster top speeds but sacrificed a bit low end, 116 mph with gates belt and 21/41 gearing on an ltx at 6 #'s of boost w/ 250+ pound rider on a smooth trail at 10.5 on afr gauge. Engagement is very low and smooth, excellent back shifting and very responsive on and off the throttle. 1/4-1/2 throttle will cruise all day at 70-80 mph, wide open on trails with the power of the turbo is dangerous!

 

[benjamingvsu]

14 RTX, unstudded
Power Mods=None
Clutch Kit= Clutching on the cheap
Belt=8DN
Belt width and length= not measured
Weights=8FP with MPI 7 gram rivets in tip and 2.44 in center
Helix=46/40
Primary Spring=Barn of Parts soft start with 4 shims
Secondary Spring=Stock
Wrap=6-1
Machined for overdrive=No
Machined for 8DN length belt=No
OSP Deflection Adjuster w/plate removed=No - but I completely removed the 3 adjustment bolts
RPMS at engagement Recall or Indicated=2800-3000
RPMS at top speed and top speed Recall or Indicated=8800 rpm, 95+ mph climbing but ran out of room
Miles on sled=1700
Observations:Best set up by far, no rev limiter issues, 14-15mpg, pulls awesome, very controllable down low for getting in and out of trailer. Only small issue I haven't investigated is twice in 300 miles I had a squeal where it sounded like belt was stuck lower in primary after a stop sign and taking off again. last year best mph was 97 on plowed road but was hitting limiter. Will post again when I get a gps verified 100 which has been my goal all along to prove this sled can do 100 with only simple and cheap clutch mods.

 

[stingray719]

Viper XTX converted to MTX 162 track with 3 inch lugs EVO 210/275/hp TURBO
Gearing=7 tooth drivers and 21/41 gearing
Power Mods=EVO turbo and EVO flash (flash adds 10hp)
Clutch Kit=EVO kit modified
Dalton QAY70 cut down to 68 grams for above 10k altitude. Bump on ramp cut off and leveled to make weight flatter
BOP soft start primary spring with 6mm shims
Stock secondary with Dalton 40/46 helix
Belt=8DN
Wrap=6-1
Machined for overdrive=no
Machined for 8DN length belt=no
RPMS at engagement Recall or Indicated= 2600
RPMS at top speed and top speed Recall or Indicated= 9200+ on low boost setting and 9600+ on high boost setting
Miles on sled=700 something

Hammer sled from stop and pulls evenly all the way up. Guests riding it comment on how sneaky the power comes on. Very happy with this setup

 

[ApexGTman]

'15 RTX LE (1.7" Lug)
Power Mods= MPI Trail Kit (Intake Outside)
Clutch Kit= Ulmers
Belt= 8DN
Belt width and length=
Weights= Supetips 2-0-2
Helix= K
Primary Spring= From Ulmers Kit
Secondary Spring= Red
Wrap= 6-2
Machined for overdrive= NO
Machined for 8DN length belt= NO
OSP Deflection Adjuster w/plate removed= NO
RPMS at engagement Recall or Indicated= 3600
RPMS at top speed and top speed Recall or Indicated= Between 8000 - 9000 Very Incosistant
Miles on sled= ~1600 Miles
Observations: Sled takes off like a bat out of hell, May even tap the limiter but if so, just briefly. Hits a wall at 85 MPH and RPMS could fall back as far as 8000 depending on conditions.

 

[SnoNinja]

15 LTX-LE 1.25 with 1.6 Cobra
Power Mods=Sandale muffler
Clutch Kit=Modified Thunder Products Big Venom
Belt=Gates C12 8DN
Belt width and length=8DN equivilant
Weights=TP Heavy Hitters 48g base weight, 1" set screw heel (4.5g) heel, 3/8 alum + 2 thin washers (1.7g) middle, 3/8 steel + 2 thin washers (3.4g) tip
Helix=Dalton 46/40
Primary Spring=Yamaha Yellow-Pink-Yellow, with TP glides washers
Secondary Spring=TP Blue
Wrap=6-1 for trail, 6-2 for off trail
Machined for overdrive=No
Machined for 8DN length belt=Yes
OSP Deflection Adjuster w/plate removed=No
RPMS at engagement Recall or Indicated=2,800
RPMS at top speed and top speed Recall or Indicated=9000 on clean trail, 8800 on snow
Miles on sled=2,000
Observations: Switch to Gates belt cured belt slip and lowered rpm resulting from belt slip. Best set up for on trail / off trail days without loss in performance in either condition. launch and pull through mid range are very strong. Can lift the skis at will low end and mid range, and get good weight transfer through the entire range. 90 MPH range most every where (except heavy snow), and 100+ on long pulls at WOT on good conditions.

 

[yamamarc]

Power Mods=sandales muffler, airbox mod
Clutch Kit=cotc
Belt=8dn
Belt width and length=
Weights=8fp with 3,6gram in tip
Helix=45/39
Primary Spring=GWG with 4 shims
Secondary Spring= stock
Wrap=3/3
Machined for overdrive=shimmed helix
Machined for 8DN length belt=no
OSP Deflection Adjuster w/plate removed=yes
RPMS at engagement Recall or Indicated=about 3500 hard to tell
RPMS at top speed and top speed Recall or Indicated=168km/h @9150
Miles on sled=2500kms
Observations: Extremely happy with overall set up In crappy conditions top speed gets affected by 15kms/h. Did hit rev limiter a few times so may add a bit of weight to tips
Love the bottom end snap pulls way harder then my wife stock zr7000(with sandales pipe)