stock or aftermarket skis on attack

[Superman]

I have mountain Apex skis on my attak. I have 6" tripple points and ski savers from bergstrom and I have them shimmed. I rode most of my miles this season with this set up and I was very happy. On and off trail.

i tried nearly the same setup on my attak except with 10" std carbides and it had major inside ski lift, it darted a bit on hardpack and steering effort was tiring after a while. didnt yours have any of these problems? i agree they were great in the powder and i love them on my 136" viper, but i just cant get enough ski pressure off of them to get them to work decent on the attak. btw my limiters are in the stock position, the transfer is set 1/4-1/3rd from min and the skis are shimmed.

Early in the year I had 9" shaperbars and steering effort was very hard. I think its the bergstrom ski savers (and less carbide) that has lightened my steering effort and reduced darting. Call scott bergstrom and get a pair of ski savers. I was skeptical during installation but they work. They are 10 bucks for the pair. worth a try I think. I will try to take a picture of the bottom of my skis with my set up. My limiters are in the stock position also but my weight transfer rod is set for maximum weight transfer.

 

[n2oiroc]

I have mountain Apex skis on my attak. I have 6" tripple points and ski savers from bergstrom and I have them shimmed. I rode most of my miles this season with this set up and I was very happy. On and off trail.

i tried nearly the same setup on my attak except with 10" std carbides and it had major inside ski lift, it darted a bit on hardpack and steering effort was tiring after a while. didnt yours have any of these problems? i agree they were great in the powder and i love them on my 136" viper, but i just cant get enough ski pressure off of them to get them to work decent on the attak. btw my limiters are in the stock position, the transfer is set 1/4-1/3rd from min and the skis are shimmed.

Early in the year I had 9" shaperbars and steering effort was very hard. I think its the bergstrom ski savers (and less carbide) that has lightened my steering effort and reduced darting. Call scott bergstrom and get a pair of ski savers. I was skeptical during installation but they work. They are 10 bucks for the pair. worth a try I think. I will try to take a picture of the bottom of my skis with my set up. My limiters are in the stock position also but my weight transfer rod is set for maximum weight transfer.

ski savers are already on. i guess these things just come with too much ski pressure and no way to reduce it.

 

[Superman]

ski savers are already on. i guess these things just come with too much ski pressure and no way to reduce it.

The only other thing I can think of is if your not running studs I might try 6" carbide instead of the 10". Also bergstrom has different thicknesses in those ski savers. Mine are like 3/8" thick.

 

[snowbeast]

Simmons and shaper bars..

 

[craze1cars]

......The 06's ATTAKS have a 42.7 ctr to ctr on those skis, the 07's will be 42.0 ctr to ctr. The 07's also will have a Shorter Spindle and Longer A -Arms, the new set up will allow the spindles to maintaine a constant 23 degress. Yamaha feels this will help achive better handling and steering than the 06 line up had. I guess when the 07's actually come out we shall see just how good they really are.

This is the first I've seen an explanation of these spec changes anywhere. I dissected all these specs back when they first came on line and I specifically came here and posted a question about the ski stance spec reduction, and the overall height spec reduction last month. Most everyone that responded shrugged them off as nothing but changes "on paper" and were obviously pulling a bunch of stuff out of their butts with no actual knowledge. Your response seems to have some credence, however. I'm not sure how longer A-arms would make for a narrower ski-stance as that seems backwards to me, but shorter spindles would explain the lower height spec for 07...and would also indicate a slightly lower center of gravity/better cornering. All the mags (useless as usual) just basically said "returns unchanged for 07" except for handwarmer improvements. I don't understand why Yamaha wouldn't brag about these types of improvements if they're indeed true to try to get people to trade in their 06's.

Where did you get your info from? Do you have a contact with Yamaha? I'm just curious. Another question that has been brought up on on at least 3 different occasions and never answered is the new spec change on the ignition system for 06 vs 07. Why? What are benefits/disadvantages of either, etc? Again everyone speculated and guessed on that (myself included), but nobody seem to have a real answer from the source. I for one would love to hear it from them but don't know how to find out.

If you have some contacts the rest of us don't have, I'd be eternally grateful if you could find an answer or two....and I'm sure others would too. I do appreciate everything you've shared. Thanks!

 

[actionjack]

WTF

Well even Yamaha is confused about this issue. The Features pages of the website state very similar things about the front end geometry from 2006 to 2007 BUT the specs page does state that the 2007 ski stance is 42" not the 42.7" of the 2006 models.

Direct quotes from Yamahas 2006 model Features page (RTX or ATTAK)
http://www.yamaha-motor.com/sport/produ ... tures.aspx
Second generation front geometry
The new second generation geometry on the front end of the Apex RTX uses shorter spindles and revised A-arms and shock mount locations to enhance the sled’s stability in tight cornering and high-speed sweeper curves. The second generation geometry maintains the same 9 inches of vertical travel, but widens the ski stance from 42.1 to 42.7 inches. In addition, the new configuration maintains spindle castor at 23 degrees throughout the travel stroke. This gives the sled consistent and predictable steering regardless of the suspension’s activity.

Direct quote from Yamaha 2007 model Features page (RTX or ATTAK)
http://www.yamaha-motor.com/sport/produ ... tures.aspx
Second generation front suspension geometry
The geometry of the second generation front suspension features short spindles and long A-arms. The suspension was engineered to deliver excellent cornering stability and consistent turning effort throughout its travel stroke. It delivers 9 inches of vertical travel and sets the skis at 42.7 inches. Steering is consistent, because the spindles are maintained at a constant 23 degrees.

I doubt we're gonna get a straight answer until the fall on this.

 

[craze1cars]

Oh. I had overlooked all that on the website since I don't usually bother reading the "features" pages. It's just a marketing hype trap usually and doesn't interest me. That's a huge bummer since I thought I had stumbled across someone with real answers. So I'm guessing Bountyhunter was just reading info off of the website and has no "in" like I had hoped. He can correct me if I'm wrong on that assumption....please take no offense, Bountyhunter, I still very much appreciate your input.

Appears these "second generation" geometry they're refering to is making these "constant 23 degree" statements in comparing the front suspension on the 06 & 07 models to the 03 to 05 RX1 models (which would have had the first generation A-arm suspension, right? after Yamaha started moving away from trailing arms?), and this stuff has nothing at all to do with changes between 06 and 07 on the Apex setup. I see they make the same statements in the 06 and 07 Vector features section as well.

I even found a statement on the 06 specs that says "the second generation front suspension was introduced on the 05 Vector models."

So I'm guessing the mags were right and there is nothing new up front for 07 at all...it's just the 3rd year for the second generation front suspension. Still curious for an explanation of the subtle changes in spec numbers. Maybe just typos or subtle corrections on paper as others have speculated.

EGADS! Just realized what I wrote...all of us here thinking we're on the latest & greatest owning Apex's, etc. My '07 Attak hasn't even been built yet, but when I pick it up it will have a THREE YEAR OLD front suspension design that's a subtle improvement of a design that was introduced FIVE years ago. And the rear suspension is THREE years old too I believe. Yet Yamaha has me thinking it's the latest state-of-the-art thing out there. I will say this, Yamaha has been the KING of marketing and making people think what they want them to think over the past few years if nothing else...cheers to them. No doubt partially explains why they're gaining market share so quickly...

 

[**sj**]

craze...funny...you'd think someone from Yamaha would come on here once in a while and give us some real info for gods sake...I'm sure us faithful at ty somewhat drive their market...

also...I'm interested about more info on simmons as I ordered a 07 attack gt and have a set of simmons with shaper bars mounted ready to roll....I've heard shimming the ski rubber helps...anyone do this on a similar machine?

 

[yamaouch08]

Not trying to get anyone excited, but Simmons will dart also in right conditions. I have had Simmons for 5 years and swore by them until I got my GT this year. I have done a lot of swaring at them now. On this sled, they have a tremendous amount of ski pressure and dart on decelleration on certain kinds of snow. I also tried Slydogs, but did not have the ski savers. They have a bunch less ski pressure than the Simmons and when I used them without the ski savers, they did not dart any more than the Simmons. I plan to go with the Slydogs and ski savers this fall. I have no experience with the Pilots.

Doug

Never had this problem on my Gt, But I also ride in snow as that is what they are made for. I have also used these skis on all my other sled with no darting, I will repeat I ride in the snow.