A little summer fun!

Srxspec

Ulmer Racing
Tech Advisor
Joined
Apr 17, 2003
Messages
5,460
Reaction score
1,257
Points
2,003
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
Just about ready to go! A few little things left to do, but nothing too major.

Currently the sled is setup 100% stock (clutching, exhaust, intake).

I do have the following installed for data aquisition, etc.
  • Power Commander V PTI
  • Ignition Module
  • Wideband Commander
  • POD-300
This will allow me to monitor virtually anything on the sled (TPS, RPM, Speed, AFR, Intake temp, etc).

I plan to play with some new air box modifications as well as a few different exhaust setups as well.

SR%20Viper%20Asphalt%20010_zpsjaajxiri.jpg
 
Looking forward to results.You should be able to run mid 10's@115 area once tuned in!
 
Sled specs
  • 10.5 x 136 Camoplast asphalt track
  • Wahl Bros Racing asphalt skis
  • 10 tooth 2.52 drivers
  • 26/48 gearing combination
  • PCV PTI
  • Ignition Module
  • Wideband Commander
  • POD-300
My testing plans
  • Box stock
  • Ulmer Racing Clutch Kit (I have our Stage 2 clutch kit as well as a new weight profile that is adjustable, just like our Stage 2 clutch kit currently)
  • Intake Kits (Ulmer Racing K&N Intake Kit as well as ***NEW*** Ulmer Racing High Velocity Air Box Kit)
  • Exhaust mufflers (I have quite a few kits to test, Ulmer Racing modified stock can (2 versions to try), Ulmer/D&D Quiet can, MBRP trail can, Sandale can, EVO "Magnum" quiet can, Hindle slip-on, Excell
  • Exhaust headers (MBRP, Straightline Performance, Hindle, and EVO)
  • Rev limiter adjustment & advancing/retarding the timing
My first weekend will be spent working on the skid setup, then likely throw some clutching at it and hopefully the air intake tests depending how quickly I can adapt/adjust the setup. It's been 9 years since I've been on the asphalt!
 
Rear skid is a modified stock skid with 4 additional wheel kits and 2 stock wheels as well. Also has Tri-Hub eliminator kit installed as well for the rear wheels.
 
Allen very nice can't wait for your results also and look forward to dealing with you in the near future. Bruce
 
How did you have to modify the skid to run the 10.5 track? I was thinking of doing this as well for the summer. Did you have to narrow the rails or just put a bunch of wheels on it?
 
Wicked stuff Allen! Any sneak peak pics of the air box?
 
How did you have to modify the skid to run the 10.5 track? I was thinking of doing this as well for the summer. Did you have to narrow the rails or just put a bunch of wheels on it?

The 10.5" track uses the same rail centers as a 15" wide track. I used a different rear skid arm that has the upper idler wheels moved in, otherwise it's a stock skid assembly (with more wheels added into it).
 
So, which speed wire gets tapped into to get speed signal for the PCV to monitor??
 
The 10.5" track uses the same rail centers as a 15" wide track. I used a different rear skid arm that has the upper idler wheels moved in, otherwise it's a stock skid assembly (with more wheels added into it).
What was the rear arm out of? I'm assuming you're running shorter shocks in the skid?
 
So, which speed wire gets tapped into to get speed signal for the PCV to monitor??

There's more to it than just hooking up a wire, you have to calibrate the sensor in the PCV as well. Call me and I will walk you through it.

What was the rear arm out of? I'm assuming you're running shorter shocks in the skid?

I used the rear arm out of a F7 rear suspension, you need to cut a few things off and only use the upper part of the rear scissors/arm, a few spacers and bolts to make it work as well, but nothing too major. I have the front arm sucked down with the limiter strap (had to drill new holes) but it is the stock shock, no rear shock, the rear arm is mounted solid. Give me a call if you're serious, I can set you up with everything you need to get on the asphalt.
 
A little preview of datalogging, this is showing speed (MPH) versus throttle position (TPS) just messing around on the track stand making sure everything is working correctly.

 
Can't wait to get my speed working.
 


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