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Got out and put on another 100 miles yesterday. Some deep snow playing and a little testing.
This time around I have put in 69g weights (measured at 68.8g to be exact). Wanted the RPM's down a little as I have found that my XF6 seems to pull harder at 7800 than 7900. Put in a Fett Brothers Green/White secondary spring. Published rating is 198/288. On hardpack this thing would pull like mad on the bottom. A bit better than the Cat Orange secondary spring. Problem was that I was topping out at about 80 MPH and couldn't get much more out of it. I have seen 95 with another setup. I knew the finish rate was stiff as the backshift was pretty hard. Good for the deep, but not so good for all around. Based on yesterdays results I think my ideal secondary spring would be about 200 start with a a 250 or so finish. Looks like Goodwin has an Orange (Doo RER) spring would work well with ratings at 185/250. Might be the closest I'm going to get at this point and it does allow room for adjustability. I'm starting to see that the actual "rate" of shift from these springs has a big impact on the shift. Might be worht paying more attention to the shift rate than actual ratings. I'm getting pretty tired of testing and have a couple setups that work well. One more "kick at the Cat" this weekend and I will likely call it quits for testing this year and just ride, ride, ride. I'm sure we'll see a whole lot more tuning parts next year.
So our ride yesterday was awesome. Went out to Swan Hills and the snow is fantastic. Finding four feet of untouched pow (Good'n stuck) in some places, and groomed trails with 6" of fresh in others. Saw a few Moose and Deer which always makes the trip that much better. At one point my buddy crested a hill and I could see his brake lights come on right away. As I came up behind him there were two Moose right in front of him. He said he saw them at the edge of the trail and was prepared for them to cross, so no close call. good thing! Here are a few pics.
[attachment=63649:Swan_Hil...2007_003.jpg][attachment=63650:Swan_Hil...2007_005.
jpg]
[attachment=63655:Swan_Hil...2007_008.jpg][attachment=63656:Swan_Hil...2007_004.
jpg]
[attachment=63657:Swan_Hil...2007_009.jpg]
EDIT: turns out the Goodwin Orange is the Cat stock Orange, just different initial and finish rates put on their website.
This time around I have put in 69g weights (measured at 68.8g to be exact). Wanted the RPM's down a little as I have found that my XF6 seems to pull harder at 7800 than 7900. Put in a Fett Brothers Green/White secondary spring. Published rating is 198/288. On hardpack this thing would pull like mad on the bottom. A bit better than the Cat Orange secondary spring. Problem was that I was topping out at about 80 MPH and couldn't get much more out of it. I have seen 95 with another setup. I knew the finish rate was stiff as the backshift was pretty hard. Good for the deep, but not so good for all around. Based on yesterdays results I think my ideal secondary spring would be about 200 start with a a 250 or so finish. Looks like Goodwin has an Orange (Doo RER) spring would work well with ratings at 185/250. Might be the closest I'm going to get at this point and it does allow room for adjustability. I'm starting to see that the actual "rate" of shift from these springs has a big impact on the shift. Might be worht paying more attention to the shift rate than actual ratings. I'm getting pretty tired of testing and have a couple setups that work well. One more "kick at the Cat" this weekend and I will likely call it quits for testing this year and just ride, ride, ride. I'm sure we'll see a whole lot more tuning parts next year.
So our ride yesterday was awesome. Went out to Swan Hills and the snow is fantastic. Finding four feet of untouched pow (Good'n stuck) in some places, and groomed trails with 6" of fresh in others. Saw a few Moose and Deer which always makes the trip that much better. At one point my buddy crested a hill and I could see his brake lights come on right away. As I came up behind him there were two Moose right in front of him. He said he saw them at the edge of the trail and was prepared for them to cross, so no close call. good thing! Here are a few pics.
[attachment=63649:Swan_Hil...2007_003.jpg][attachment=63650:Swan_Hil...2007_005.
jpg]
[attachment=63655:Swan_Hil...2007_008.jpg][attachment=63656:Swan_Hil...2007_004.
jpg]
[attachment=63657:Swan_Hil...2007_009.jpg]
EDIT: turns out the Goodwin Orange is the Cat stock Orange, just different initial and finish rates put on their website.
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