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OK, learning some stuff about this sled. First off I have a disclaimer now everytime I race....IT'S GEARED TOO LOW for lake racing!!! Ha ha.
Went to the lake Friday and plowed a 600' strip. Glare ice. Since I sharpened my BRAND NEW studs the XF7 hooks up pretty good now. I did a few runs and was a bit surprised to only see 80+ mph at the end of the strip. My testing has shown HIGH 80's to 90 with my F7 on SNOW in the same distance...hmmm.
So yesterday I was back out there with my sled, bud's box stock XF7, my F7 and buds F5. Now my F7 is clutched, PAC and key. My XF7 D&D clutching, key. Bud's XF7 100% box stock. Bud's F5 has all the parts off my old F5. Race CDI, clutching, and a good "tune up."
First let me say this. My F7 feels MUCH MUCH faster then the XF7. I couldn't believe it. First thing I did was run the F7 on the ice strip. Speedo was in the low 90's by the end of the strip. I couldn't believe almost 10mph faster??? Wow.
So we lined the 3 700's up. This was good packed snow with a little loose on top. -10 degrees F. My XF was first off the line followed by my F7 then the box stock XF. By 500' I think I had 2-3 lengths on the F7, and about right at 1000' the F7 went by me so fast I think it peeled some stickers off my brand new XF! I can't believe the XF lays down that much. I know it's geared low...but WOW. Don't get me wrong the Crossfire still pulls to 90++ at 1500' on snow, but the F7 is GONE. The box stock XF was probabaly another 5 lengths behind mine! This was repeated after a few runs. Do the DD clutches really lose THAT much efficiency as it goes into overdrive in the 70mph range??
So that was enough with the F7. Went and got my buds F5. Now this thing is a freak as was mine. My F5 would run with about ANY stock 600 including the HO SDI and HO poo (both box stock). We took off and my XF left the F5, but the box stocker didn't. I looked back at 1000' and the dang 500cc was COMING. I couldn't believe it. This F5 would have passed my 700 Crossfire in 2000' I believe. The stock Crossfire never even put a length on this F5!
One point of interest is that both Crossfires are running low 7900's for RPM's. Mine pulls like mad from 0-80 then feels like it lays down as accel greatly decreases. I THINK I may need to lower R's by 100. Either way this is not a lake sled and guys better watch out for good running 600's as they will give the Crossfire all it can handle.
Went to the lake Friday and plowed a 600' strip. Glare ice. Since I sharpened my BRAND NEW studs the XF7 hooks up pretty good now. I did a few runs and was a bit surprised to only see 80+ mph at the end of the strip. My testing has shown HIGH 80's to 90 with my F7 on SNOW in the same distance...hmmm.
So yesterday I was back out there with my sled, bud's box stock XF7, my F7 and buds F5. Now my F7 is clutched, PAC and key. My XF7 D&D clutching, key. Bud's XF7 100% box stock. Bud's F5 has all the parts off my old F5. Race CDI, clutching, and a good "tune up."
First let me say this. My F7 feels MUCH MUCH faster then the XF7. I couldn't believe it. First thing I did was run the F7 on the ice strip. Speedo was in the low 90's by the end of the strip. I couldn't believe almost 10mph faster??? Wow.
So we lined the 3 700's up. This was good packed snow with a little loose on top. -10 degrees F. My XF was first off the line followed by my F7 then the box stock XF. By 500' I think I had 2-3 lengths on the F7, and about right at 1000' the F7 went by me so fast I think it peeled some stickers off my brand new XF! I can't believe the XF lays down that much. I know it's geared low...but WOW. Don't get me wrong the Crossfire still pulls to 90++ at 1500' on snow, but the F7 is GONE. The box stock XF was probabaly another 5 lengths behind mine! This was repeated after a few runs. Do the DD clutches really lose THAT much efficiency as it goes into overdrive in the 70mph range??
So that was enough with the F7. Went and got my buds F5. Now this thing is a freak as was mine. My F5 would run with about ANY stock 600 including the HO SDI and HO poo (both box stock). We took off and my XF left the F5, but the box stocker didn't. I looked back at 1000' and the dang 500cc was COMING. I couldn't believe it. This F5 would have passed my 700 Crossfire in 2000' I believe. The stock Crossfire never even put a length on this F5!
One point of interest is that both Crossfires are running low 7900's for RPM's. Mine pulls like mad from 0-80 then feels like it lays down as accel greatly decreases. I THINK I may need to lower R's by 100. Either way this is not a lake sled and guys better watch out for good running 600's as they will give the Crossfire all it can handle.