I know this mainly a highmark forum but might be some flatlanders here...

[sno_mo_racer]

I have an '06 fuse 900 and need some clutching/gearing advice. Right now have stock gears 25/37 and stock clutch except for the 719 helix and 11-76 wieghts. For spares I have I an almond/red and a black/??? primary springs. No other secondary springs to try, and have some 24 and 38 gears. And some delrin washers for secondary.

Figure the primarys will get the engagement too high as tried them and don't really think this engine likes a high engagement or was it just the one spring I tried think it was engaging at 4300 rpm and sounded a little harsh. Not sure what effect of the 24/38 gears would do as gearing and clutching I ain't really comfy yet.

Right now the rpm wfo on digital read is 7600 and max read is 7850 but seems the max is always a bit higher. ever really check the difference between analog and digital yet though. Don't really have the cash right now for more weights to get the rpm down a bit. Think I should be around 7200 for the '06?

From take-off the rpms are good and climbs great to 90+ quick. Haven't had a chance to get it to go full out and see what it tops at yet.

 

[triple650]

I got a 05 fusion 900, i have 24/38 gears 1.5 track, i found it made a difference. pretty shure 7600 for the 06 engine is about right, the 05 is lower mines at 7450 wich is right inbetween were it should be.

 

[94fordguy]

From take-off the rpms are good and climbs great to 90+ quick. Haven't had a chance to get it to go full out and see what it tops at yet.

Wow, The fastest I have ever been on a sled is 85 and that was screaming fast.... I can't imagine going any faster

As far as your clutching goes, since your getting the rpm you want at the top end, I would keep the weights you got and try going to a primary spring with a lighter initial load to try and get that engagement down about 1,000 RPM (I think.... clutching is not my forte, haha)

 

[Redd]

You have to remember that just because it hits at 4000+ rpms to get it to move don't mean that's a rule to keep it moving. Once you got it going it already(for lack of a better word) in gear. Mine hits at around 4,300 and that pleases me fine. I have a friend who put a new spring in after 3,800 miles and his hits at 4000 stock with a fresh spring. I wouldn't worry too much, if yer doin 90 and still have more to go, then hit WOT to see and then let us know. I live in Michigan and we have alot of flat LAKES!

 

[chunkysoup]

I have an 06 900 switchback that i ride in southern wisconsin. Last year it had 25-40 gearing with slp mtx weights. I was running around 78 grams with an almond/black primary spring and stock secondary. I hit 115 mph across the lakes easily and topped at 119 mph. Ive changed everything this year. I have 11-72 weights with a green silver slp primary spring, 24-40 gearing and the 66-44.46 helix with a red/pink secondary spring. havent gotten it out this year yet but im hoping i can get a little more pull even if i get less mph. your engagement is fine around 4300. that is where mine was engaging and 7850 max rpm is perfect for that engine! Thats where im trying to set mine up at. Hope this helps!

 

[sno_mo_racer]

Thanks guys. Going out hunting later on this morning so will get to see how it runs. Should be a good day. Extra 10 gallons on the sled. Snowing the past 12 hours and -19*c so going to enjoy it.

 

[river]

You have to remember that just because it hits at 4000+ rpms to get it to move don't mean that's a rule to keep it moving. Once you got it going it already(for lack of a better word) in gear. Mine hits at around 4,300 and that pleases me fine. I have a friend who put a new spring in after 3,800 miles and his hits at 4000 stock with a fresh spring. I wouldn't worry too much, if yer doin 90 and still have more to go, then hit WOT to see and then let us know. I live in Michigan and we have alot of flat LAKES!

I'm in michigan too where abouts are you? had mine up to 110 but took alittle bit to get there it pulls to 100 fast but after that take a while to get more but it will. would like to run another 900 Polaris , to see how it does against another. I pulled a zr 900 by about 3 sleds . I thought that was pretty good for a long track against a short track. I have the 720 helix in and run 78's for weights with a black/green primary spring .

 

[sledneck_03]

Wow, The fastest I have ever been on a sled is 85 and that was screaming fast.... I can't imagine going any faster

As far as your clutching goes, since your getting the rpm you want at the top end, I would keep the weights you got and try going to a primary spring with a lighter initial load to try and get that engagement down about 1,000 RPM (I think.... clutching is not my forte, haha)

really? the old sleds were faster.....my old 2000 700 showed 115 on the lake at -30 packed with .9 track hahahah it was a little to quick for a moto helmet......needed a NFMH

 

[Redd]

I'm in michigan too where abouts are you? had mine up to 110 but took alittle bit to get there it pulls to 100 fast but after that take a while to get more but it will. would like to run another 900 Polaris , to see how it does against another. I pulled a zr 900 by about 3 sleds . I thought that was pretty good for a long track against a short track. I have the 720 helix in and run 78's for weights with a black/green primary spring .

Just North of Detroit, goin' to the U.P. on the 26th for a week!

 

[94fordguy]

really? the old sleds were faster.....my old 2000 700 showed 115 on the lake at -30 packed with .9 track hahahah it was a little to quick for a moto helmet......needed a NFMH

I'm sure that's true, keep in mind that I'm a mountain rider and my sleds are not setup for high speed. My 800 151 had 19/41 gearing... perfect for a good mix of mountains and the trails to the good stuff. Right now I got my 900 setup at 18/39, and it tops at 78mph.... Awesome torque with that gearing pulling the 166 track

 

[river]

Just North of Detroit, goin' to the U.P. on the 26th for a week!

Have a good ride ,should be awsome snow up there. hope there's not to many sleds up there. last time I went during the christmas break. it was so busy. but if you head to houghton lake or south branch area let me know. I ride those area's and the west side alot too.

 

[hockey1004]

Wow, The fastest I have ever been on a sled is 85 and that was screaming fast.... I can't imagine going any faster


I just went out for my first rides this past weekend on the brand new 06 900 and i was at about half throttle and hit 104mph, not too fast for me since I love speed and cant get enough.

 

[FLASH1970]

Well, I am a flatlander and I'm interested in learning about gearing, clutching, which spring, and all the other "ing" things I need to know. So, I'm hoping some guys with some experience will chime in.

 

[triple650]

Wow, The fastest I have ever been on a sled is 85 and that was screaming fast.... I can't imagine going any faster


I just went out for my first rides this past weekend on the brand new 06 900 and i was at about half throttle and hit 104mph, not too fast for me since I love speed and cant get enough.

i seriously doubt you were half throttle, with my gearing i got to 110, its geared for 114 mph so thats pretty good, i dont need to go over 90. I probly went over 100 10 times last year dont do it often.

 

[sno_mo_racer]

Well, I found a 1/4 mile stretch and topped 104mph and gps was 92mph. Had a bit of hard packed snow drifts on hard pack snow so track was spinning from hitting the drifts. RPM stayed around 7650 on digital and max recall was 7900. Marked the primary and still had about 1/8" on it yet.

What would changing gearing to 24/38 do?

 

[triple650]

Well, I found a 1/4 mile stretch and topped 104mph and gps was 92mph. Had a bit of hard packed snow drifts on hard pack snow so track was spinning from hitting the drifts. RPM stayed around 7650 on digital and max recall was 7900. Marked the primary and still had about 1/8" on it yet.

What would changing gearing to 24/38 do?

lower speed, or depending if the gearing is to steep could help top end, with my rpm stock gearing was 117mph track speed, 24/38 was 114 braught it down a bit better track helped alot.

 

[sno_mo_racer]

Well, day after I did the run on the 21st I went to go change the rear track shock and found the H-bracket that links the front and rear shock together broken where it is together on the thicker front shock. Good thing I found it before it damaged my track, but cracked my slider. Well my father is a better welder then me, I went off for the holidays and meant to get another H-bracket and slider when I got back. But when I got home after the holidays machine was out all ready for me. I thought my father went and got new parts while I was out and he said Merry Christmas and no, was just the cost of a couple welding rods and used a piece of metal for brace on the slider, so haven't took it out yet to see how much abuse it can take but he did put a good brace on the slider rail and welded the h-bracket pretty good so should be ok. DAMN I LOVE MY FATHER SO MUCH...
Well anyways, back to the ride. So took it out again on same stretch and not much big drifts now so not much track spin. Max recall 115 and gps 109mph. So I am happy with it right now but still think if I get my rpms down from 7900 tach(analog) with max recall 7950 down to maybe 7400-7600 tach rpm it maybe wouldn't lose power after certain rpm. Think I seen a stock '06 dyno which looses power after 7500 rpm? Maybe a different spring with a lighter finish will get bo around there or do I have to go 2 grams heavier? If it is the weights then will have to wait for a while as still recovering from the holidays. If one of the other primary springs I have will get me down a couple rpms or what would they do? they are almond/red and can't remember what the other was black/???? still have to find it and dig it out.

 

[sno_mo_racer]

Oh, and how would I get the primary to fully shift out, it had about 1/4-1/8" left on it. More spacers or less, and how thick spacers? Or is it a different way to get it to fully shift out?

 

[BIGGDAWG]

what are you running for primary weight. you could add about 2g per weight that would pull the r's down and throw the primary more.

 

[sno_mo_racer]

what are you running for primary weight. you could add about 2g per weight that would pull the r's down and throw the primary more.

I am running 11-76 right now.