Converting my XTX need some help.

[jameshofo]

I'm looking to convert my 09 XTX over to more of a mountain machine and make some improvements along the way.

So what I have so far is timbersled front end and Fox Zero pro shocks
I'm revmoing most of the foam from inside the sled
I've ordered 20 tooth drivers and I'm told stock the XTX has 19-41 gearing
I've installed Simons flexi skis, and a 144" 2" track.

The track has defenitley impoved my hookup but its a lot of work for my sled to plow though the deep stuff.

What I need I need is some help with gearing, should I change the bottom gear? I'm also going for the extrovert drivers and would like to know if an anti stab kit is required on yamaha. I planed to change my extroverts to 8 tooth down from 9. Will that give me more a mountain sled? or should I look into changing out hte bottom gear?

 

[Mtnviper]

I'm looking to convert my 09 XTX over to more of a mountain machine and make some improvements along the way.

So what I have so far is timbersled front end and Fox Zero pro shocks
I'm revmoing most of the foam from inside the sled
I've ordered 20 tooth drivers and I'm told stock the XTX has 19-41 gearing
I've installed Simons flexi skis, and a 144" 2" track.

The track has defenitley impoved my hookup but its a lot of work for my sled to plow though the deep stuff.

What I need I need is some help with gearing, should I change the bottom gear? I'm also going for the extrovert drivers and would like to know if an anti stab kit is required on yamaha. I planed to change my extroverts to 8 tooth down from 9. Will that give me more a mountain sled? or should I look into changing out hte bottom gear?

19/40 gearing works well on the XTX for mountain use.
9 tooth anti-ratchet driver's will require trimming off approx 5/16" to 3/8" off the front of the rails. To prevent the extrovert teeth from contacting the rail tips as the suspension compresses.
It's not to bad of a job to do while the skid is out. I removed the black plastic caps, then trimmed the front of the rail, re-installed the caps and re-drilled new mounting holes for the caps. Becarefull not to cut the rails to short as the top of the rail tappers down and you want to leave enough room to drill new cap mounting holes in the aluminum rail.
If you decide to go with 8 tooth anti-ratchets they "might" clear without rail trimming. However they are slightly less efficient then 9 tooths, due to the track rolling around the smaller radius. Although you may not be able to tell the difference!
8 tooths will gear the sled down as well (link to driver info) http://fourstrokesolutionsllc.webs.com/ ... edtech.htm
One advantage the 9 tooth driver has over the 8 for mountain use is approach angle. The smaller the driver, the steeper the track approach angle will be. It's not a huge difference, but every little bit helps!
Pulling up the limiter straps 1 or 2 holes also helps in deep snow, by reducing the approach angle.
One of the biggest improvements for the mountains I noticed on mine (besides track and ski's) was swapping out the rear skid for a lighter one with straight rails.
While anti-stab kits are a good idea, the 144" track is a 2.52" pitch. Which means that the windows are smaller then 3" pitch tracks and are less likely to have a rail stab through the track window. Also the XTX rails curve up at the front more so then on other sleds, reducing the chances of stabbing the track.