Any traction products we choose to use also are part of the sled’s weight we record … just how you would ride your sled with studs and carbides (See box p. 40 for studding info).
We next put hundreds of miles on every sled to make sure they are sufficiently broken in before we run the acceleration tests and before we start calculating fuel mileage and checking oil consumption. We also go through a several point inspection of each sled before running the acceleration tests, which includes things like tightening the tracks, checking the studs, carbides, hyfax and more. We next mark off ¼ mile on our groomed lake track and another ¼ mile for shut down.
Our goal is to always make a “full pull” on the acceleration tests through the ¼-mile and give the sleds a chance to really reach their top speed. We warm up each sled just before we pull it up to the line and then give each sled two back-to-back runs to garner its best acceleration run. We report the better of the two runs.
All our sleds were 2013 models and all were 100% stock except for those with traction packages. One exception was our Yamaha Nytro XTX 1.75, which added a “Yamaha approved” low elevation supercharger kit from MPI. This is a dealer installed upgrade and something we had been looking to test on a quasi-trail sled for a while.
Finally, after the acceleration tests we ride as a group for several tankfuls of gas and record early season MPG figures. These can change over the season, but we give these numbers now AND the full-season MPG figures in our Long-Term Test reports in next fall’s issues.
|Sled Wet Weights & MPG|
|| WET WEIGHT/ LBS.
| Ski-Doo MXZ X 600 E-TEC
| Ski-Doo Renegade X 800R
| Polaris 600 Indy SP
| Arctic Cat XF 800 CrossTour
|Polaris 800 Pro-R Switchback Adventure
|Yamaha FX Nytro XTX 1.75 w/supercharger
|Arctic Cat F 1100
Turbo SP RR
|NOTE: Sleds driven at varying trail speeds with various drivers for several hundred miles after engine break-in. Full wet weights taken with high-quality Intercomp wireless floor scales. Complete Stud Boy stud packages for the MXZx 600 E-TEC, Indy 600, Renegade 800R and F1100 Turbo RR. Due to a late arrival the Nytro had fewer tanks of fuel through it after engine break-in, for purposes of gas mileage calculations. More info: www.intercomp.com |
Do kids still say “sick” to mean cool? They do in our world! Well, our most anticipated duel of the Real World Shootout was the sick battle between the new Polaris 600 Indy SP and Ski-Doo’s MXZx 600 E-TEC. They recently squared off at our New York Shootout with the Indy showing 113.4 hp on the dyno and the Ski-Doo 600 logging 116.8 hp.
That didn’t mean much when they hit the track in New York. The Indy easily topped the MXZ from start to finish in our 1,000-foot acceleration test there(See NY Shootout, p. 26, Feb. ’13)
. HOWEVER, the sleds were not broken in at that point. New York Shootout sleds are straight out of the box and we know that Ski-Doos in particular have a more abrupt break-in, once the ECU has finally counted the correct number of injections, the E-TEC sleds really wakeup.
So, the stage was set for a showdown at the Real World, the impressive rookie in the Indy taking on the stalwart 600 E-TEC. The Ski-Doo E-TEC won this round of the acceleration battle, but wow, was it close!
The ¼-mile mph was actually exactly the same for both sleds! Top speed was only 1 mph different and throughout the ¼-mile less than a half second separated the two machines.