2016 track speeds?
- Thread starter ACMtnCat
- Start date
Depends on snow and how you check,
31 to 38mph above 10k
31 to 38mph above 10k
If I stop on a slight hill with some powder and a soft/kinda firm base, hit the throttle it will instantly hit 33 without hardly moving, if I'm moving in a climb but slowing down its 33-35.
With stock gears, sw 120,285 and stock cat 66g with stock 43* helix, same
But I first put in the mds and it said the same but pulled noticeably harder (was comparing against the same sled.
Geared up, pulled harder
The whole time I didn't notice a track speed change.
So even though it's reading 35 you may have more than you think.
What are you currently running for weights, spring, helix, sec spring, gears, any engine mods?
It seems they like a little added tip weight
At 6000ft in 2 plus feet of good powder on a 30 plus degree incline I was seeing 36 to 39 consistently with my 162 x 3. That is with a black polaris spring, mds weights with 4 grams in the tip only, 48 degree helix, 084 belt 8100 to 8170 rpm. I was seeing 35 to 38 with 2.5 grams in the tip and middle but only 7950 for rpms. The tip only setup pulls harder but the speedo is not showing it.
The sled is otherwise stock except for the tether which has to be good for 20hp.
The sled is otherwise stock except for the tether which has to be good for 20hp.
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ACMtnCat
Well-known member
That's the info i was looking for. Thanks! I did the same speed tests by the sounds of it.
I was running stock primary spring with CPC 67gram weights - 48* helix stock spring. Consistently hit 33mph on longer faster ground speed pulls with sock secondary. I could get it to go 35mph stabbing the throttle fast then it would settle to 33mph.
Yesterday i got a CPC torsional kit installed. Had a stock secondary in the backpack to compare with. CPC green spring at #8 hole consistently hit 38mph both had same 8100-8200rpms. I pulled weight out to 65grams and saw 8340rpms and could see 42 for a second then down to 38-39mph.
I'm liking what I'm seeing! A few more test days and I'm ready to track some Pro's down!
I was running stock primary spring with CPC 67gram weights - 48* helix stock spring. Consistently hit 33mph on longer faster ground speed pulls with sock secondary. I could get it to go 35mph stabbing the throttle fast then it would settle to 33mph.
Yesterday i got a CPC torsional kit installed. Had a stock secondary in the backpack to compare with. CPC green spring at #8 hole consistently hit 38mph both had same 8100-8200rpms. I pulled weight out to 65grams and saw 8340rpms and could see 42 for a second then down to 38-39mph.
I'm liking what I'm seeing! A few more test days and I'm ready to track some Pro's down!
What angle helix are you running.
I'm assuming the weights are adjustable, where did you load the weight and what primary spring.
I'm assuming the weights are adjustable, where did you load the weight and what primary spring.
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ACMtnCat
Well-known member
Yeah, CPC adjustables, playing with weights in the 65g to 68g range and stock 85/265.? spring. The CPC torsional green spring is softer than the stock spring my sled came with. The 48* has super aggressive back shift, I think I'd like a bit slower back shift. I am going to swap out the 48* to the 43* helix in the CPC torsion clutch and do a comparison to the stock 48* secondary and see what that does. It's nice having that stock clutch on the mtn to compare too, swaps out so easy!
I want to find that combo that gets me a solid 42mph.
You're running the 43* right? What is that doing better than the 48*?
Do you have a pic of the torsion setup, sounds like it works with stock helix, is that correct.
43 just pulls harder from start to finish. Quick back shift as well. Remember I'm over 10k so your in a different world.
A 44, 45 might be better suited depending on gears.
But a 43 would show you the difference in a bigger way.
The helix is a much bigger key with more options than before.
I couldn't stand the stock spring, it would let it shift to soon. But I know cpc weights act different. I like the clutch to engage decent but then let the motor rip into the higher rpm then shift hard.
Stock with 66g, 120/285 sw h5, 43* helix let it do that. But better weights with tip weight (mds) loaded the motor better on top to get that pull feeling on top instead of just reving.
Odd thing is when I geared up with the same setup I lost the low end rip, tells me the helix is the key. But pulled harder on top with taller gear.
I'd almost like to try a turbo helix and straight, like a 38,44, 40 seems backward but feels that way.
43 just pulls harder from start to finish. Quick back shift as well. Remember I'm over 10k so your in a different world.
A 44, 45 might be better suited depending on gears.
But a 43 would show you the difference in a bigger way.
The helix is a much bigger key with more options than before.
I couldn't stand the stock spring, it would let it shift to soon. But I know cpc weights act different. I like the clutch to engage decent but then let the motor rip into the higher rpm then shift hard.
Stock with 66g, 120/285 sw h5, 43* helix let it do that. But better weights with tip weight (mds) loaded the motor better on top to get that pull feeling on top instead of just reving.
Odd thing is when I geared up with the same setup I lost the low end rip, tells me the helix is the key. But pulled harder on top with taller gear.
I'd almost like to try a turbo helix and straight, like a 38,44, 40 seems backward but feels that way.
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ArcticJunkie
Member
Cutler has a pic on there website but that is what it looks like can use the stock one.
Thanks guys for posting all of the clutching info cant wait to get out to the snowies!!!!
Thanks guys for posting all of the clutching info cant wait to get out to the snowies!!!!
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ACMtnCat
Well-known member
Yes the CPC torsion kit used the stock helix's.
I think you might be on to something with a reverse "turbo" helix. I told Dale that the other day that I'd like a 42/44* or 44/46* helix. He thought I was kidding, but I think it might actually work. I'm not a clutch expert tho! so.? I just tell Dale what I want and he makes it.
I think you might be on to something with a reverse "turbo" helix. I told Dale that the other day that I'd like a 42/44* or 44/46* helix. He thought I was kidding, but I think it might actually work. I'm not a clutch expert tho! so.? I just tell Dale what I want and he makes it.
I like what cpc did with the new 2016 arms
https://cpcracing.com/arctic-cat/cpc/Clutching/CP-IT-TEAM
https://cpcracing.com/arctic-cat/cpc/Clutching/CP-IT-TEAM
I may have to get myself one of these. Like being able to adjust.
https://cpcracing.com/arctic-cat/cpc/Clutching/CP-TeamTorsional
https://cpcracing.com/arctic-cat/cpc/Clutching/CP-TeamTorsional
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Insaneboltrounder/sjohns
Well-known member
what exactly does it do?
Lol, little backward but I can tell you the 48 vs 43 the 43 pulls harder on the bottom than the 48 at our elevation.
Geared up the 43 pulls a lot like the 48 in a stocker
But geared up with 43 the top end feels like a old turbo pull, loaded and going (only feels like 3lbs but I like that felting)
Put it together and geared up with a 40/43 , tips loaded on the weights and a primary spring that let's it rev then load and pull we might see something pretty wild.
For your elevation prob a 42/45 or 40/45 might be better.
I just need a 40 straight and ill know.
But I'd like to try it anyway
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