F7 EXT gearing

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redthunder

New member
I have an 04 F7 EXT that I would like to change gearing on to gain more low-end but am wondering how much it will affect top-end. It presently has alot of mid-range and tops out at 110mph on a no friction flat surface. I am not really interested in going that fast anymore, but would appreciate a little more low-end grunt.
 
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hondo

New member
depends on how much you change it. 1 tooth on top or 2 on bottom lower wont change top end at all most sleds are over geared. More important look for a gear set up with a good chain fit though. dont go lower than 20/39 if you want to run extended time at wide open or might end up with some belt problems
 
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ezra

Well-known member
how do you like your 04 ext I have a xfire 7 but just found a new in the crate 04 ext for 4400 thinking it would be a great 2nd sled.how is it in the tight trails?how about in the pow is she a trencher ?
 
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scottd

New member
I used one for one day out west last year and high altitude, powder, hills, and a 144 X 13.5 X 1.5" EXT F7 did not mix well. That was in serious deep snow high mountain terrain, not exactly what it was intended for, but it is a reference point for you anyways. Fortunately I was able to borrow a new 154" Summit the rest of the trip and the problems were solved. That Firecat ripped for the 5 or so miles I did on a trail with it.

Scott
 
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redthunder

New member
I like my F7 but have had some issues. Plenty of power for straight lines but too much power for tight trails + skinny long track make it very dangerous on tight curves. I removed the studs and don't gas it on curves. I love it in large open deep powder areas or lake racing/long straight lines. It burns alot of oil and only gets around 10mpg the way I drive-I don't ride at a steady pace and go off-road/ditch banging/jumping every opportunity I get. I would not buy a long track again--I just don't ride in deep enough snow regularly and would love to wheelie more.
 
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