Track speed gearing and clutching debate. #2 the real deal

[WyoBoy1000]

I started this thread and the first thread,
http://www.snowestonline.com/forum/showthread.php?t=251409
because I was testing the new MDS turbo weights. I was running a full on twisted kit, clutching and all. I put the stock secondary off my m1000 on it with one plastic shim and a shift assist and the mds weights with a polaris black spring. I ran it and got some numbers and on the same day same hill installed the weights.

Twisted
9600ft
6lbs
8000rpm but jumping all over
TS-42-43mph - in 2' fresh up hill at very low ground speeds.
you could touch the clutches but not for to long

MDS
9600ft
6lbs
8000rpm and held with 50rpm even crossing tracks.
TS- 51-52mph tested 10' to the side of the other runs
after 3-4 hard pulls you could leave your hand on the clutches, clutch temps where: pri, 97* sec, 94* belt 104*
power comes on very smooth

with twisted secondary track speeds where 46-47mph. clutches a little warmer but not much.

Sense then I have had some heat in the clutching but I think some is due to the low end, I am running a KMOD suspension and have to run it very tight to keep it from ratcheting. With the setup it engages very smooth and you can make it crawl without spinning if you want, but with the tight track and low engagement I think its causing a little slippage and is a little lazy for just a second.
On hard wide open pulls the clutching stays cool and my belt looks great through all of it.

I think I can correct this problem just havent done it yet because I am having a blast with the combo of TWISTED - MDS - KMOD, I am pulling of stuff people shake there heads at.
I am also planning on trying a few things to make the upshift even faster. But for right now the sled is getting Kmod rails and a 162 PC, can't wait to see what it does now.

At 10bls it really kicks A$$

 

[mynewuseddoo]

So the only difference between the two tests was the weights, correct?

 

[WyoBoy1000]

MDS weights, Polaris Black primary spring, straight 36* helix, one shim with shift assist under orange spring. Hi torque rollers.

 

[Vertical-Extreme]

A straight 36 on a turbo is an interesting set up. Most people are 44 to 46
Guess you never know what will work unless you try it

 

[knzee]

Which one went up the hill farther and by how much? Why only 8000rpm too? I am running 8300 on an ovs and two cpc m8's that ride with us are also at 8300. Just wondering because that is what we were all told, between 8300-8500.

I started this thread and the first thread,
http://www.snowestonline.com/forum/showthread.php?t=251409
because I was testing the new MDS turbo weights. I was running a full on twisted kit, clutching and all. I put the stock secondary off my m1000 on it with one plastic shim and a shift assist and the mds weights with a polaris black spring. I ran it and got some numbers and on the same day same hill installed the weights.

Twisted
9600ft
6lbs
8000rpm but jumping all over
TS-42-43mph - in 2' fresh up hill at very low ground speeds.
you could touch the clutches but not for to long

MDS
9600ft
6lbs
8000rpm and held with 50rpm even crossing tracks.
TS- 51-52mph tested 10' to the side of the other runs
after 3-4 hard pulls you could leave your hand on the clutches, clutch temps where: pri, 97* sec, 94* belt 104*
power comes on very smooth

with twisted secondary track speeds where 46-47mph. clutches a little warmer but not much.

Sense then I have had some heat in the clutching but I think some is due to the low end, I am running a KMOD suspension and have to run it very tight to keep it from ratcheting. With the setup it engages very smooth and you can make it crawl without spinning if you want, but with the tight track and low engagement I think its causing a little slippage and is a little lazy for just a second.
On hard wide open pulls the clutching stays cool and my belt looks great through all of it.

I think I can correct this problem just havent done it yet because I am having a blast with the combo of TWISTED - MDS - KMOD, I am pulling of stuff people shake there heads at.
I am also planning on trying a few things to make the upshift even faster. But for right now the sled is getting Kmod rails and a 162 PC, can't wait to see what it does now.

At 10bls it really kicks A$$

 

[Coxy]

Which one went up the hill farther and by how much? Why only 8000rpm too? I am running 8300 on an ovs and two cpc m8's that ride with us are also at 8300. Just wondering because that is what we were all told, between 8300-8500.

Even on the HO 8000's 83-8500 is too high... Nevermind the 09's. Put some load on the motor, let er eat!

 

[WyoBoy1000]

My sled is a 09 HCR. 7950-8200rpm is where you want it.

I couldn't make the hill straight up to start with, about 2/3 the way up I had to sidehill and work my way up, after install I went straight up and over, literally. I was so exited and in disbelief at the same time. Its was like cranking it to 10lbs. Even on take off it would lift the skis another foot in the air.

To add to it at 10,400ft when I would get on it the sled would go right to 7850rpm and then a second later hit 8000rpm, so it was a little slow but once it hit rpm it held it just fine. could be something with fuel tuning also. But just last saterday in Cooke I was running 5.75lbs and hitting 8000ish rpm most of the day and after I burned most the gas I dumped in some race gas and cranked it to about 9.25lbs and it was pulling 8150rpm. These weights are perfect for the ability to adjust boost without messing around with weight changes. At that boost level it felt like I doubled the power and where I was going half way up I was going all the way to the top, which is something when your on a worn out 153 PC track and you and gear weighs about 260lbs.

Don't forget with out the Kmod conversion I couldn't control this sled to save my a$$, I would try and point it up hill and it would wash out or pull the skis up and out of control and I would climbing trees. I thought my skills where lacking. After installing it the sled is now my b1tch.

 

[Coxy]

8200+ on a 09? Thought the power fell off pretty quick on these, forced induction shouldn't jack the peak range up... But perhaps I should try it now for the hell of it.

 

[WyoBoy1000]

Had it over 8200 before and couldn't tell a difference, there wasn't any gain by any means but sure didn't feel like a loss, it seems to run strong from 8000 to 8150.

 

[knzee]

Weird. According to a 2010 m8 that OVS had on a dyno it showed 288 hp at 8500rpm on 12psi at the elevation they tested it at. I don't care about dyno numbers any more then the next guy but I can feel the difference between 7900 and 8300, heck I can pull the skis from 7900 to 8300 at 12 psi.

Even on the HO 8000's 83-8500 is too high... Nevermind the 09's. Put some load on the motor, let er eat!