GoGoJoe
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- Jan 21, 2015
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- Canada
- Snowmobile
- Yamaha Nytro xtx
trying to help others out who might be frustrated with the out of the box handling and ride of their xtx...
the information I have provided others has helped them
http://www.ty4stroke.com/viewtopic.php?p=730025#730025
although the info is somewhat skewed as my shocks have been revalved from zero miles...here goes..
observations..
the front shocks have too much spring and spring rate and the shock feels valved too stiff...the a arms should be much closer to level with the ground....lots of ski pressure ...I imagine darting and unpredictable..
the center shock/spring setting is somewhat too weak (weight of rider has tremendous impact here)
this causes the shock to blow through its stroke too soon and a heavy steering and I imagine a darting machine
too much compression and rebound...
solution (avg rider assumed)
loosen front shock springs ...with the front of the sled lifted....loosen til spring just about rattles loose...then slightly retighten...should be right around 3"...the problem is there is not enough to let out. as a low cost tuning option...pioneer performance offers a 2.3kg/mm vs the stockers 2.5kg/mm which should give more tuning range...
tighten the center shock spring a good amount...again this is very rider weight and ski choice dependant...even after revalving I tightened mine half again as much as stock! small changes will make a big difference...going too far will not allow the shock to stroke(ride on) and make the sled push in the corners and "high side"
for heavier riders or if someone wants to experiment..I believe pioneer offers a 3.0 vs a 2.5 kg shock spring here ?
I recommend after making some spring adjustments doing the following...
if you are unhappy with "sitting on" vs "sitting in" your suspension...you will like this....it goes against some other suggestions of setting ride height...but I like sitting in...and assuming you are around 200-210 try your torsion spring in the soft setting without compression....after a run over some terrain...add in a some compression ...you can always increase torsion and compression...but start here IMHO
also adjust your transfer to about 50% making sure they are adjusted evenly...I believe the transfer adjustment affects more than transfer....so the more transfer reduce the coupling affect but lightens the machine up...again..start here...add to taste after the rest of the adjustments...
I also recommend taking all the compression and rebound out of the front shocks and then adding to taste later......
lastly...I feel the skis to be totally inadequate for the amount of weight carried on them (not saying you cant do things to make them preform better...just not what the aftermarket skis do) I personally run simmons...and have for yrs...other good choices are doo pilots...c&a xtx's ...maybe powderhounds and powder pros... even the yam mountain skis... need a ski with more width IMHO
the way the sled feels from the factory to me is high and long...pushing and not using the suspension...with the changes I made it made the sled turn well and felt 50lbs and a foot shorter lol hope this helps some!
I have a diforent shock set up on my front end on the 2013 XTX 1.75 and like boondocking more than trailing ,I also love the way it wheelies but want the best of both worlds ,any suggestions for my style ???