question for those who clutched their D-8's

[AKSNOWRIDER]

Sled is running OK, no burble, cough, etc. Just doesn't seem to be getting rpms. It idles a little bit low in cold temps, but I think that is pretty normal. Sometimes I wonder if the update affected mine adversely, as I never really had a problem with it before the update. Sounds like the clutching set-up outlined in this thread works well with solid running sleds anyways, so I will give it a shot. My gut is that it is clutching, since I can achieve about 8000 rpms plus or minus 50 on level hardpack snow. I just know that when I can get it to run around 8350 there is a huge difference.

you might run the sled back into the dealer..have them check the tps settings with a multimeter instead of with digital wrench(way more acurite and the setting is critical)the tps really makes a difference on how the sled runs..and most dealers wont take the time to do it right with the multimeter..(carls cycle checks and sets every sled on the predelievery inspection..and have very few runability issues with their sleds)sounds to me like it is rich up top(thats why on hardpack it pulls rpm..motor is seeing less load)...

 

[winter4ever]

Took the new set up out today. The snow was WET thick slop so I dont know how that affected my set up. 68 gram MTX with 2 grams in the heal and 2 in the tip and the blue pink primary spring. I kept the secondary stock. The sled felt like it was pulling really hard but at about 5500 feet I was only pulling about 7800 or 7900 (the slop snow didnt help im sure). I might try to take a little weight out of the tip. Although the rpms would kinda fluctuate on a long pull so I might need a stiffer secondary spring too.

 

[AKSNOWRIDER]

Took the new set up out today. The snow was WET thick slop so I dont know how that affected my set up. 68 gram MTX with 2 grams in the heal and 2 in the tip and the blue pink primary spring. I kept the secondary stock. The sled felt like it was pulling really hard but at about 5500 feet I was only pulling about 7800 or 7900 (the slop snow didnt help im sure). I might try to take a little weight out of the tip. Although the rpms would kinda fluctuate on a long pull so I might need a stiffer secondary spring too.

just pull some tip weight first..aprox 100 rpms per gram on the tip and 50 rpms for each gram in the belly....the fluctuations are most likely due to no delrins in the secondary, they allow the clutch to work without binding up...

 

[aebsledder]

you might run the sled back into the dealer..have them check the tps settings with a multimeter instead of with digital wrench(way more acurite and the setting is critical)the tps really makes a difference on how the sled runs..and most dealers wont take the time to do it right with the multimeter..(carls cycle checks and sets every sled on the predelievery inspection..and have very few runability issues with their sleds)sounds to me like it is rich up top(thats why on hardpack it pulls rpm..motor is seeing less load)...

10-4. Thanks for the help. Regardless of TPS setting, seems like a different clutching set-up would increase performance anyways? Also, do they have to re-set or check the TPS when the update was done? Hopefully they won't scold me for putting an SLP single on there. Seems like that shouldn't hurt it anyways. I was thinking about going back to the stock pipe and SLP can, but that theory doesn't seem right since the SLP pipe leans out the AF anyways right? I will stop talking TPS since this is a clutching thread, thanks again for the input.

 

[AKSNOWRIDER]

10-4. Thanks for the help. Regardless of TPS setting, seems like a different clutching set-up would increase performance anyways? Also, do they have to re-set or check the TPS when the update was done? Hopefully they won't scold me for putting an SLP single on there. Seems like that shouldn't hurt it anyways. I was thinking about going back to the stock pipe and SLP can, but that theory doesn't seem right since the SLP pipe leans out the AF anyways right? I will stop talking TPS since this is a clutching thread, thanks again for the input.

dealer will belly ache about the pipe...might want to put it back stock until you get it to run right....as for the tps vrs clutching the rich map will keep the sled from making max power..which then keeps the motor from having the power to make the clutches reach full potential...and this is compounded when you add a clutch setup with big upshift since it loads the motor more...and thats why you see a big difference in on trail packed snow rpm vrs off trail deep powder rpm's..its easier for the motor to spin the track on hardpack vrs. powder....now enters the tps..if it is off even just a bit(say on the rich side of the factory setting vrs the leanside)all of a sudden you are down 200 rpms..if you look at the slp dyno charts for the dragon that means at 8000 rpm its showing about 151 hp...at 7800 its only 146 hp...thats 5 hp for just a slightly rich tps...now what if it was slightly on the lean side..and it pulled 8400? you would have a about 3 more hp ...lots of little things make for big in the field differences..those who's stuff run the best are those who pay attention to all the details....

 

[ENDO1]

Clutching

AK, Took mine for a ride Sat, it run just like Winter4ever, had the same snow conditions. I tried some different weights, started with 2 outer - 1 inner, run about 8050 down low 7950 at 6000ft, changed to slp recs for 3000 - 6000ft
3 outer 2 inner, run 7900 at best.(did not get my extra rivets in the mail) When I had 2 outer - 3 inner the week before sled run much better down low, 8250 rpm,
but the same on top 7900 to 8000, I do not have the delrin washers so going to order some, thinking of trying 2 outer - 2 inner next weekend, I have a gut feel I am going to end up with 1 or none in the outer and 2 or 3 inner when I finish.
09 D8 163
SLP single
68g MTX weights
blue/pink spring
Secondary stock
42 lower gear
SLP air intake
FIRE - N - ICE dash vents
Mnt fit tower vents
XMODS side vents
SLP knee vents
Better Boards
Voretex rear rack

 

[champyfz450]

AK, Took mine for a ride Sat, it run just like Winter4ever, had the same snow conditions. I tried some different weights, started with 2 outer - 1 inner, run about 8050 down low 7950 at 6000ft, changed to slp recs for 3000 - 6000ft
3 outer 2 inner, run 7900 at best.(did not get my extra rivets in the mail) When I had 2 outer - 3 inner the week before sled run much better down low, 8250 rpm,
but the same on top 7900 to 8000, I do not have the derlon washers so going to order some, thinking of trying 2 outer - 2 inner next weekend, I have a gut feel I am going to end up with 1 or none in the outer and 2 or 3 inner when I finish.
09 D8 163
SLP single
68g MTX weights
blue/pink spring
Secondary stock
42 lower gear
SLP air intake
FIRE - N - ICE dash vents
Mnt fit tower vents
XMODS side vents
SLP knee vents
Better Boards
Voretex rear rack

ENDO1 try 1g in the belly nothing in the tip like I did. It was really good for me with most of the same mods as you have for 5000'-8000'

 

[ENDO1]

Clutching

ENDO1 try 1g in the belly nothing in the tip like I did. It was really good for me with most of the same mods as you have for 5000'-8000'

Thanks Champyfz450,I was thinking about starting with 2g in the belly 0 tip this next weekend, a lot of our snow parks start around 1500ft and most of our riding is at 4000ft to 6500ft.

 

[winter4ever]

Thats what I was thinking. 2 grams in the belly, none in the tip. Delrins will probably help a bit too, does anyone know if they effect secondary spring rate as well? it seams like they would a little bit.

 

[AKSNOWRIDER]

guys your getting the hang of it..I would say the same...pop 1 gram in the belly and try it...down low keep it off the bars, and up high let it rip..if it pulls too much rpm then add a little...delrins help the secondary be consistent..worth doing and yes it does raise the secondary rate just a bit...when you get the r's up you will like it....

 

[chevy88girl]

I am thinking of doing this set-up without the rivets in the weights, as I run mainly between 7 and 10 thousand feet. I am nearing the end of my rope with my dragon and am hoping this will wake it up. I know it ran way better before I got the update done, but I already bought the damn SLP single set-up, so I am kind of commited. Hopefully it will work.

Sledder I am running the 68 mtx weights with no rivits, green pink spring, and geard 19/42. Have slp pipe and can, and am pulling 8250 rpms at 9000 feet. Left sec. stock 56/42/36 and black purle. Seems to pull good, but ordered 18 top gear and going to try it, "since wifes ski doo is right with me now after working on hers" I also had problem with idle and was cutting out in mid range right after update,took back to dealer and they reset tps and has been great ever since.

 

[AKSNOWRIDER]

Sledder I am running the 68 mtx weights with no rivits, green pink spring, and geard 19/42. Have slp pipe and can, and am pulling 8250 rpms at 9000 feet. Left sec. stock 56/42/36 and black purle. Seems to pull good, but ordered 18 top gear and going to try it, "since wifes ski doo is right with me now after working on hers" I also had problem with idle and was cutting out in mid range right after update,took back to dealer and they reset tps and has been great ever since.

if you can find one..drop the helix down to something around 60/40/.36 or 58/40/.40 the steeper initial will pull harder at low speeds and the slightly smaller finish angle will get the rpms up since you have no weight left to pull... and hopefully allow you to readd some rivit weight...also make sure you put at least 2 delrins in the secondary(will make it more consistent and smoother)

 

[briand]

Wow!!!

Well Today was a snow day here so just did some testing at home here
I got a chance to try aksnowrider Team clutch setup and all i can say is wow. Even on a 03 edge rmk this made a big difference. I have posted my results in the edge section.

http://www.snowestonline.com/forum/showthread.php?t=189911

 

[assaultcbco]

I need to know what you guys would say I need. I ride from 9000-12000 ft. I have a stock 09 Assault. The dealer cant get the clutching right and I have had it about a year now. I am fed up. I am very mechanical but know very little about clutching. I am just looking for guidance. Thanks

 

[AKSNOWRIDER]

I need to know what you guys would say I need. I ride from 9000-12000 ft. I have a stock 09 Assault. The dealer cant get the clutching right and I have had it about a year now. I am fed up. I am very mechanical but know very little about clutching. I am just looking for guidance. Thanks

riding that high is a toughy..first..gear the sled down alot...some guys on here last winter riding up that high loved 19/45 19/46 gearing...also you have to go down on the helix..motor just doesnt make enough power to pull big angles..I would try something in the 58/38/.36 to maybe 58/40/.36...try to get it to pull bigger weights(like 68 gram mtx's)as a heavy weight setup is normally less finicky about elevations/snow conditions....

 

[ENDO1]

clutching D8

AK I see that you run 3 DELRIN washers, one above and below the spring, and one under the cup, if I read the post correctly, My secondary is stock, I ordered in some washers, what will putting in three do for me over just 2 ?

 

[AKSNOWRIDER]

AK I see that you run 3 DELRIN washers, one above and below the spring, and one under the cup, if I read the post correctly, My secondary is stock, I ordered in some washers, what will putting in three do for me over just 2 ?

really wont do much..it does add a slippery surface between the cup and the sheive and slightly more spring preload...I had 3 so I used all three....

 

[aebsledder]

Sledder I am running the 68 mtx weights with no rivits, green pink spring, and geard 19/42. Have slp pipe and can, and am pulling 8250 rpms at 9000 feet. Left sec. stock 56/42/36 and black purle. Seems to pull good, but ordered 18 top gear and going to try it, "since wifes ski doo is right with me now after working on hers" I also had problem with idle and was cutting out in mid range right after update,took back to dealer and they reset tps and has been great ever since.

Chevy, what was your idle problem? Mine idles really low sometimes, but it doesn't cut out mid-range. I am going to try the stock 10-62's first, then maybe a green pink, then maybe a helix. I am trying to do everything I can first without putting any more coin into it. I will get a dealer to check the tps too, as AKSNOWRIDER suggested. I am a little leary on the Power Commander's, my friend has one and he hasn't noticed any difference after plugging in SLP's latest map. If none of that stuff works, I may just say hell with it and put it up for sale. I bought my snowmobile to ride, not to work on it in my garage every time I get back from a ride. I don't mind TLC and preventative maintenance, but this is getting ridiculous.

 

[AKSNOWRIDER]

Chevy, what was your idle problem? Mine idles really low sometimes, but it doesn't cut out mid-range. I am going to try the stock 10-62's first, then maybe a green pink, then maybe a helix. I am trying to do everything I can first without putting any more coin into it. I will get a dealer to check the tps too, as AKSNOWRIDER suggested. I am a little leary on the Power Commander's, my friend has one and he hasn't noticed any difference after plugging in SLP's latest map. If none of that stuff works, I may just say hell with it and put it up for sale. I bought my snowmobile to ride, not to work on it in my garage every time I get back from a ride. I don't mind TLC and preventative maintenance, but this is getting ridiculous.

aebsledder, mine is back mobile..will ride it sunday..should give me an idea how this 10 stuff is and how it relates to the clutching....hang in there..we will get yours figured out....

 

[aebsledder]

riding mine thursday

Thanks AK. I will be riding mine on thursday with the 10-62's. I figure with such a drastic change in clutching if it doesn't do something different I know to look elsewhere. Thanks for all your help, makes the forum worth being on.