??? on slp mtx weights

[THRILL_SEEKER]

here is something i am a little confused by. 09 D8 163 68 gram mtx weights with 2 grams in the tip. sled pulled about 8150 8250 on hard pack trail, in deep snow seemed to be fairly consistenly pulling 8100. i want it to pull about 8250 to 8350 on hard pack and pull down to 8150 8250 in the deep stuff so i tried the 1 gram weights in the tip. results kinda confused me. rpms may have dropped slightly hard to tell for sure the snow conditions were diffrent this week then last week but seemed to only pull 8050 8150 in the soft stuff. was wondering if maybe these weights are diffrent and maybe slightly more tip weight will net higher rpms? what you all think, should i go back to the 2 gram or should i try maybe the 3 gram weights in the tip? or should i just try the 1 gram one more time? or should i try no weights?? any thoughts would be great!!!

 

[AKSNOWRIDER]

here is something i am a little confused by. 09 D8 163 68 gram mtx weights with 2 grams in the tip. sled pulled about 8150 8250 on hard pack trail, in deep snow seemed to be fairly consistenly pulling 8100. i want it to pull about 8250 to 8350 on hard pack and pull down to 8150 8250 in the deep stuff so i tried the 1 gram weights in the tip. results kinda confused me. rpms may have dropped slightly hard to tell for sure the snow conditions were diffrent this week then last week but seemed to only pull 8050 8150 in the soft stuff. was wondering if maybe these weights are diffrent and maybe slightly more tip weight will net higher rpms? what you all think, should i go back to the 2 gram or should i try maybe the 3 gram weights in the tip? or should i just try the 1 gram one more time? or should i try no weights?? any thoughts would be great!!!

try 2 grams in the middle..and none in the tips and see if that doesnt work for you..i set mine to pull at least 8200 on the deep stuff..trail rpm doesnt matter to me....

 

[sledx.net]

This month SLP recommended I buy the MTX 65G with 1G in both to use on 09 D8 with 2010 update. Said the 2010 update doesn't pull like the prior flash. Concerned these will be light riding at 10-12k.

 

[THRILL_SEEKER]

with two in the middle and none in the tip will i still get full shift out? in the middle should i feel more pull in the mid range and bottom end?

 

[skibreeze]

This month SLP recommended I buy the MTX 65G with 1G in both to use on 09 D8 with 2010 update. Said the 2010 update doesn't pull like the prior flash. Concerned these will be light riding at 10-12k.

That's the reccomendation, but my 08 D8 won't pull 65's. I had to get the 62's and I am running them with no rivets. On packed snow it will pull closer to82-8300, in deeep snow, 80-8100.

 

[AKSNOWRIDER]

That's the reccomendation, but my 08 D8 won't pull 65's. I had to get the 62's and I am running them with no rivets. On packed snow it will pull closer to82-8300, in deeep snow, 80-8100.

ski..what springs? I run the stock black/purple in the secondary(with at least 1 delrin washer)nad up front try either slp blue/pink or green/pink(green/pink will be alot more snappier on the bottom..both same up top)..that should get your r's up..i shoot for 82-8300 with stock pipe..83-8400 with slp single..just what I have found to work...I have also found the 8cfi doesnt like alot of tip weight..it wants most of the weight in the belly..so i would go 2 belly-1 tip if i needed to add a little weight....

 

[hardhat32]

I would assume that your loss of RPM is from a change in conditions. I've seen my sled not pulling enough RPM in the morning, and then be right on in the afternoon.

Different elevation, different temperature, different snow, different types of riding, all seam to make a difference.

If you want a little more RPM, pull some weight out. I'd try what AKSNOWRIDER said, he has a lot of experience with the MTX weights, and has helped a lot of people on here.

I would not be worried about getting full shift out. It will still happen with lighter weights, but not as soon. That is the point of lighter weights, they keep your sled in a lower gear for a little longer.



Belts can also have a significant effect on RPM.

 

[skibreeze]

ski..what springs? I run the stock black/purple in the secondary(with at least 1 delrin washer)nad up front try either slp blue/pink or green/pink(green/pink will be alot more snappier on the bottom..both same up top)..that should get your r's up..i shoot for 82-8300 with stock pipe..83-8400 with slp single..just what I have found to work...I have also found the 8cfi doesnt like alot of tip weight..it wants most of the weight in the belly..so i would go 2 belly-1 tip if i needed to add a little weight....

I have the SLP pipe and can. SLP pink/green pri and delrins in the sec.

 

[thefullmonte]

The tip of the weight has the greatest overall effect. Meaning it influences the shift caracteristics from basically slightly past engagement to full shift out. Maybe 1/3-1 of the shift range.

The hole closer to the pivot has more effect on upshift and looses effect shortly before full shift out. Maybe 1/4-3/4 of the shift range.

My riding style I would likely place 1g in each hole.

 

[THRILL_SEEKER]

so would it be safe to say the weight in the belly will help on the bottom end and through the midrange? if the sled would almost pull 2 grams in the tip, do you think it would pull 3 grams in the belly?

 

[AKSNOWRIDER]

I have the SLP pipe and can. SLP pink/green pri and delrins in the sec.

ski, you running the stock helix?there is no way the dragon can pull a 42 at that elevation..i think something along 58/40..40 or even 58/38/.40 will get you where you need to be...I question 42 when i get over 5000 ft..sled pulls it but i think if I spent the time to dial it it would pull 40 better...
now with the mtx's I have found 1 gram in the tip will raise/lower rpms by 100 roughly..in the belly by 50 rpms...but every setup varies slightly...there is a thread here in the IQ section on clutching that has tons of setups for different elevations using the mtx weights...might sift thru it and see what you find that is close to what you are running...

 

[skibreeze]

ski, you running the stock helix?there is no way the dragon can pull a 42 at that elevation..i think something along 58/40..40 or even 58/38/.40 will get you where you need to be...I question 42 when i get over 5000 ft..sled pulls it but i think if I spent the time to dial it it would pull 40 better...
now with the mtx's I have found 1 gram in the tip will raise/lower rpms by 100 roughly..in the belly by 50 rpms...but every setup varies slightly...there is a thread here in the IQ section on clutching that has tons of setups for different elevations using the mtx weights...might sift thru it and see what you find that is close to what you are running...

I got the 60-40-.36/ 60-38-.36 in it, just can't remember which position it is in.

 

[thefullmonte]

so would it be safe to say the weight in the belly will help on the bottom end and through the midrange? if the sled would almost pull 2 grams in the tip, do you think it would pull 3 grams in the belly?

You are correct. The weight in the belly will have a greater effect on midrange. It can help give a very aggressive upshift. I would still only run the 2g though.

I know it's a little off topic, but team ind. recommends the 58/38-.36 helix for these sleds above 6000ft. This is to be run with the red/black 140-240 secondary spring they used in the older 800's. I know it all depends on your setup. Just thought I would pass it along.

 

[AKSNOWRIDER]

I got the 60-40-.36/ 60-38-.36 in it, just can't remember which position it is in.

ski, pop it out and try the other position..bet its in the 40 slot...

 

[THRILL_SEEKER]

You are correct. The weight in the belly will have a greater effect on midrange. It can help give a very aggressive upshift. I would still only run the 2g though.

I know it's a little off topic, but team ind. recommends the 58/38-.36 helix for these sleds above 6000ft. This is to be run with the red/black 140-240 secondary spring they used in the older 800's. I know it all depends on your setup. Just thought I would pass it along.

i am running 58/40/.36 in my sled with blk/purpl secondary. if i changed it to the 58/38 with same said spring and same weights set up (1 gram in tip) what results might i expect?

 

[thefullmonte]

Typically, what a shallower helix accomplishes is to slow down the upshift and speed up the backshift. In theory it should hold rpm better and not be bogged down as easily. Also, when on and off the throttle it should be more responsive by being able to recover faster. Granted, this is a little over simplified as there has to be balance between your primary and secondary. One doesn't do something without it effecting the other.

Something that I don't think gets said enough around here. Always always always remember that clutching starts in your primary. The motor makes the power. You then have to transfer as much of that power as physically possible through the primary. Then you can see what the secondary needs to do. Hope that helps.

 

[AKSNOWRIDER]

i am running 58/40/.36 in my sled with blk/purpl secondary. if i changed it to the 58/38 with same said spring and same weights set up (1 gram in tip) what results might i expect?

with all else the same going to a shallower finish angle on the helix will raise engine rpm and slow upshift/quicken backshift..figure about a 200 rpm increase...now you still need to make sure that the combo works togeather but it should...

 

[THRILL_SEEKER]

thanks guys, think i will try the helix swich first so i dont run out of weight rivets.