- Joined
- Apr 17, 2003
- Messages
- 5,347
- Location
- Menno, SD
- Website
- www.ulmerracing.com
- Country
- USA
- Snowmobile
- 2014 Yamaha SR Viper LTX, 2014 Yamaha SR Viper RTX SE, 2015 Yamaha SR Viper MTX SE 162 (turbo), 2015 Yamaha SR Viper MTX SE 153
- LOCATION
- Menno, SD
- WEBSITE
- www.ulmerracing.com
I've had alot of questions on this and seen quite a few posts through the winter on this. After getting some more riding time on this setup yesterday I can say it flat out works! Great low speed driveability, very very smooth engagement, great backshift and RPM consistancy in varying snow conditions.
Installation pictures:
First you remove the parking brake, brake caliper, snap ring and washers, brake disc, spacer, and lock collar.
Next you remove the torx screws holding the jackshaft bearing holder into the bulkhead.
Next you can go on the chaincase side and tap lightly with a rubber mallet to remove the jackshaft. Once loose slowly slide it out the clutch side.
Next you will slide the new jackshaft in and tighten the torx screws again. You may have to rotate the shaft slightly to get the splines on the shaft to line up with the top gear.
Now you can put the locking collar on and tighten the torx screw, then install the spacer, brake disc, washer, and snap ring (on my sled I had to leave the thicker of the two washers off to get the snap ring installed).
Next you will want to install the supplied washers onto the jackshaft to set the offset correctly.
Now you are ready to install the secondary onto the sled.
Next you need to install the new primary spring and weights supplied with the kit!
Everything is installed and ready to ride!
Installation pictures:
First you remove the parking brake, brake caliper, snap ring and washers, brake disc, spacer, and lock collar.
Next you remove the torx screws holding the jackshaft bearing holder into the bulkhead.
Next you can go on the chaincase side and tap lightly with a rubber mallet to remove the jackshaft. Once loose slowly slide it out the clutch side.
Next you will slide the new jackshaft in and tighten the torx screws again. You may have to rotate the shaft slightly to get the splines on the shaft to line up with the top gear.
Now you can put the locking collar on and tighten the torx screw, then install the spacer, brake disc, washer, and snap ring (on my sled I had to leave the thicker of the two washers off to get the snap ring installed).
Next you will want to install the supplied washers onto the jackshaft to set the offset correctly.
Now you are ready to install the secondary onto the sled.
Next you need to install the new primary spring and weights supplied with the kit!
Everything is installed and ready to ride!
SledFreak
TY 4 Stroke God
- Joined
- Feb 7, 2005
- Messages
- 5,514
- Location
- Ontario. Canada
- Country
- Canada
- Snowmobile
- Current 2020 ThunderCat. - SOLD!
Any more top end with it? What about low to mid accleration? Got any numbers? Did you test against a stocker? You got snow?
Daranello
Suspended
Ulmer let me test for you, Ive got ice!!!! Could ya see in the 120's Mph with the kit??
- Joined
- Apr 17, 2003
- Messages
- 5,347
- Location
- Menno, SD
- Website
- www.ulmerracing.com
- Country
- USA
- Snowmobile
- 2014 Yamaha SR Viper LTX, 2014 Yamaha SR Viper RTX SE, 2015 Yamaha SR Viper MTX SE 162 (turbo), 2015 Yamaha SR Viper MTX SE 153
- LOCATION
- Menno, SD
- WEBSITE
- www.ulmerracing.com
3-4 sled lengths low to midrange acceleration gain. Much better backshift over stock. The snow conditions were pretty wet & heavy yesterday running through 2-3" of snow and could get 109-110 on the dream meter in probably around 2000' distance. Conditions here are not good for top end this time of the season, the ground is warming up and making slop out of it!
nytrofly
Veteran
So how much is this kit gonna cost???? I am very interested if it aint stupid expensive!!
jeffT
Pro
what does the new jackshaft actually do?
marsh14
Expert
I think it is like $750
- Joined
- Apr 17, 2003
- Messages
- 5,347
- Location
- Menno, SD
- Website
- www.ulmerracing.com
- Country
- USA
- Snowmobile
- 2014 Yamaha SR Viper LTX, 2014 Yamaha SR Viper RTX SE, 2015 Yamaha SR Viper MTX SE 162 (turbo), 2015 Yamaha SR Viper MTX SE 153
- LOCATION
- Menno, SD
- WEBSITE
- www.ulmerracing.com
The cost is $725. The new jackshaft allows you to put the TEAM clutch on. The FX Nytro uses a hollow jackshaft which is larger in diameter than the standard Apex, RX-1, Vector, etc uses. The kit includes a new jackshaft, secondary clutch, helix, secondary spring, clutch weights, and primary spring.
SledFreak
TY 4 Stroke God
- Joined
- Feb 7, 2005
- Messages
- 5,514
- Location
- Ontario. Canada
- Country
- Canada
- Snowmobile
- Current 2020 ThunderCat. - SOLD!
This thing better do alot for 725.00... F*&^^% that is alot of dough for clutching... 9% more top end? Is that for sure?
Daranello
Suspended
SledFreak said:This thing better do alot for ... 9% more top end? Is that for sure?
9% more top end..that put me at 127mph >>>> Got my attention....even 5% I'd be VERY happy....that would put me past the Apex's
SledFreak
TY 4 Stroke God
- Joined
- Feb 7, 2005
- Messages
- 5,514
- Location
- Ontario. Canada
- Country
- Canada
- Snowmobile
- Current 2020 ThunderCat. - SOLD!
No, I meant to say 9% in the over drive, not top end...
adirondac blue
TY 4 Stroke Junkie
What holds the top gear in place. I haven't had a nytro apart.
grader
TY 4 Stroke Master
i cant figure out how you can pull a jackshaft out like that. is the top gear not bolted in? what holds it up with no shaft there? enlighten me please.adirondac blue said:What holds the top gear in place. I haven't had a nytro apart.
Nice pictures...what angle is in the secondary?
NyTrOMaNIaC
TY 4 Stroke Master
Dalton weights ?
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