Well I am new here, but so far it seems you guys have the technical knowledge I am looking for. I have a 96 T-cat with a 992 bige bore. Race Logic ported it. I had D&D pipes in a 00 Chasis, now I have Jaws Pipes in a 96 chasis. I am wondering if anybody else has a 992 and would like to discuss clutching. I have mine set alot like most of you seems to have T-cat 1000's clutched. If anybody has this setup for ice drag I would love to know. Here is my setup, which has pared decent, but I need some advice.

Hooper Adjustable weights, set between 62-64, I am still playing here
D&D Orange Primary
D&D Purple Secondary, 4th hole
60-40




I havent run it yet this year, but I will be going back to stock gearing. Last year I went down one up top and up one on the bottom. Seemed to jump good, but ran out up top, I would do good till about 400 ft, then I woudl get passed, I seemd to be topped out.

Should I leave this setup and try the smaller gearing? I need more top end.

ALso, please check out my other clutch posts, I am having alignment issues, but I am not sure what to do now, with that. I am going to Anchor Bay this weekend, anyubody else?

Thanks

Yes, I am running a very similar setup to yours. I have a 99 ZRT800LE.

I have the 992 kit that I built and ported myself using the Race Logic porting kit, very easy to use and John Caldwell was excellent at answering all my questions. Here is the setup that I am currently running:

Heavy Hitters weights set to 63.8 gms - gotta love the adjustability of these babies!!!!
A/C Orange/White Primary spring - 145/295
A/C roller Secondary
D&D Purple secondary spring - 83/140
640/40 Helix - set at 3rd hole
24/39 gearing

I run right around 8600 - 8800 rpms. I just put a 2* timing key in it this year and it seems to pull better than last year. Last year I ran 124mph in 1500 feet. This year first time out I ran 1 run of just under 1000 feet and went 111.9mph letting off the gas to get the skis back down and then had to feather the throttle to keep them from coming back up. Hopefully will get out this weekend to do a full pass. I also installled a D&D breather, so I am interested to see what that does.

I think for your top end I would try the secondary in the 3rd hole and see what difference it makes on your top end. How are your RPM's?? Do they stay steady, drop on top end or are you running low??? With the Hooper weights where do you have the weight concentrated - bottom, middle, tip?? I can give you a link to a friend's website that really has some excellent ideas about clutching and he is a guru of clutching!!

Hey I would love that link. I was messing with it the other day and I kept having clutch issues. TUrns out my Jack shaft is bent. I have a new one on order.

When I use the weights, I just screw the screws all the way in, so in the tip.

I ended up changing to my other clutch (CPC purple/white with 62 Grams polaris weights).

I am thingking of ordering a Teal D&D spring, but I want to get the whole clutch alignment thing/shaft fixed first.

I ended up using the clutch I just said and in the back, a button secondary, Red spring (unkwon whos, but a little softer thna D&D purple) and a 60/56.

It seemed to be OK, but I was gettging the clutches hot. I am not sure if it was not adjusted right, or the shaft issue.

I hope to play again next weekedn, my shaft/bearings should be in mid week.

Personally not knowing what spring is in the secondary it would be very hard to judge. I think that the 60/56 has too shallow a finish angle and you wouldn't be able to grip the belt the way that you need to at high rpm. I have a hunch that you saw rpm's falling off on top end and created a lot of belt slip = hot clutches = bad performance.

I am a fan of belt grip and using heavier springs and low angle helixes. I run the 60-40 but I am going to play with a 64-36, 55-36 and others that I have just to see what they do. I have a friend that has a 50-25 that I know I can make work, just need some testing time. Why did you switch primary's? I liked your other setup, except maybe the D&D purple in the 4th hole - a little skeptical of that - maybe too stiff, but who knows. Are you running a roller or button secondary??

As for the D&D teal, I wouldn't waste my money as I calculated the spring rates between the spring you have and the teal and didn't see much difference. I have a D&D teal on my shelf and went with the A/C orange/white because although the finish was greater on the teal, the spring rate was greater on the orange/white.

MOST IMPORTANTLY, get the shaft fixed and I am sure that your alignment problems will take care of themselves and then we can dial in that clutching, for now I would work with what you have as I thing there are some good pieces to work with.

The link is: http://www.mxzx-revzone.com/. Read his stuff on clutching IQ, fantastic reading. The guy's name is Joey and his handle on sites is dynamo_joe, you've probably heard of him. He is a ski-doo guy but used to be the clutch guy for an Arctic Cat race team and is one of the most knowledgeable guys around sledding that I have met. He is also very easy to talk to.

Why such a shallow finish and stiff spring? It is not letting the primary shift all the way out and going flat up top. The more angle and less spring I keep running, the cooler my clutch and the more top end I have. If you want more top end, you are not as concerned with backshift, right? With the 60/56 you may just need a little stronger spring.

Yes my clutch did get real hot, that is why I switched the secondary then it got cooler, but still hot,. so I switched primarys.,


My RPM, actaully stayed pretty steady, even a little high. I currently have JAWS pipes and they say 8400-8600. I was running 8550-8800, even hit 8900/9000.

Thats why I was thinking the Teal spring. Once I get this shaft thing fixed, here is what I was thinking:

D&D Teal, with the Hooper Weights.
Roller secondary, with D&D Purple/60/40 on third hole.

I am setting this up for 660 racing. WHat shoudl I try for secondary, I have a Button also. I know I have a D&D Purple, AC Green, and then about five more than I am unsure of.

Primarys, I have the CPC Purple/WHite and a D&D orange. Plus a bunch I am unsure of.

Helix, I have a 60/40, 60/56. 60/46, and again a bunch I am unsure of.

I hate all these unknown parts, but they came with this clutch and that, that sled, etc....

I have 62 grams, 64 grams, 60 grams, and the Hooper weights

ANy suggestions, I don;t really wnat to buy too much stuff, like I said maybee a new spring.

Thanks

D&D Teal, with the Hooper Weights.
Roller secondary, with D&D Purple/60/40 on third hole.

I like this setup, but for drag racing I would load the weight on the bottom. We had a '98 Tcat with a 1050 that we ran on the asphalt and ran the heavy hitters. When we loaded the weights on the bottom this thing hit real hard out of the hole, so hard it almost took the timing tree out. I would start with that setup and see how it works and go from there.

If you get a chance read the stuff on the website I sent you, lots of good stuff there.

Well,

NOw on the Hooper weights, when you put the weight in, I am not sure how to put the weight at the bottom. Are you familair with e QACA weights? YOu put a set scrw in them from the heel of the weight and bottom it out against the tip? I guess you could put some loctite on them and just screw it in part way, is this what you mean?

OK,

I just inventoried all mny clutching componentrs that I know what thye are:

Primaries:

D&D Orange 170/305
D&D Teal 185/295
D&D Red 170/305
CPC Pur/White 175/305
Polaris Light Blue 120/300
Polaris Dark Blue/White 120/310
AC Red 74/228
AC Yellow/White 122/285


Secondary

AC Green 58/119
D&D Pur. 83/140
D&D grey 67/123

Helix
60/40
60/56
60/46
58/33

Weights
62 Gram Polaris
64 Gram AC
56.5 gram (notched, balanced)
Hooper QACA

DO you still suggest suggest the setup above, this is what I was thinking also.

Thanks

ANy suggestions on what to try? I hope to give it a shot Sat or SUn.

Sorry, to sound like I am repeating myself but I would try this to start:

D&D Teal, with the Hooper Weights - you'll probably need around 63-64 grams.
Roller secondary, with D&D Purple/60/40 on third hole.

To load the weights on the bottom I would put in a short set screw first and then put in a second one behind and jam it up against the first one so they don't move or vice versa, put in a long one and use short one to jam the first one. Just a thought...start with this setup and see what the sled does and everytime you make a change, make notes as to how the sled reacted and what difference the change made. This will tell you what to do next.