DUAL KEEL SKIS, you've got to be kidding me!!!
These skis prove Yamaha's engineers are diabolical, money hungry masochists or
not that bright!!!
From 2001 the 8EX, 8FE, 8EN, 8FX and 8AC ski have reportedly preformed unsatisfactory. That being said, the 2011 Apex and 2012 Trail ski are functionally inferior to the previous Yamaha skis.
Yamaha unveils new ski
Are they confirming their 2011 Apex and 2012 Trail ski do not cut darting – keep a relatively light steering effort have it be predictable, handle precisely and maintain control? Ergo, Yamaha must already realize both the 2011 and 2012 missed the mark again.
Steel ski designs
Woody's temporary fix
Don't waste a dime on "Tuner" skis or their wear rods!!! The 2001 8EX ski is also a better design than the 8HG, 8HV skis.
Center keel skis let you corner better at speed and with less effort!!! Simmons and Precision skis have proven this.
I talked to a Yamaha rep at the Milwaukee Snow Show. I was told they had been working on the "Tuner" ski over the last 4 years. He said they had put some of what they had learned, developing the "Tuner" ski, into the 2012 Trail ski. He mentioned the spindle bolt location came from the "Tuner" ski research (I didn't question this until I placed their 2", 4" and 6" carbides on the "Tuner ski". Snowmibilers deserve better than these poorly designed carbides.). After failing to develop a good ski for 2011 and a questionable 2012 Trail ski I hold little hope for the "Tuner" ski. The idea that Snowmobilers should buy, up to 4 combinations of wear rods to fine tune the skis is ridiculous.
For those not familiar with dual runner skis or rods, the inside carbide of the outside ski does all the work when turning. There is no advantage to using more than 4" of carbide on the outside keel. Also, the longest carbide Yamaha offers is 6". Their power-steering will help some but I will not give the Tuner Ski the benefit of the doubt!
2013 Yamaha Catalog - Tuner Ski