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PART 7... 2013 POLARIS RMK.. COMING IN JUST 2 DAYS!

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As awesome as the belt drive seems im gonna have to wait till tghe 14 to snocheck. gonna wait and see how durable there actually r.

No worries, there are plenty that will buy the one you would have purchased. I think they will have trouble satisfying the demand, unless they price themselves out of the ballpark.
 
As awesome as the belt drive seems im gonna have to wait till tghe 14 to snocheck. gonna wait and see how durable there actually r.

I'm not sure why there are so many sceptics of the belt drive system. Do a little research. They are being run in many applications including big boosted sleds.
 
Maybe if you ride yours on the pavement it could buck you off but locking the track up in the snow isnt automatic ejection in most cases. Im not one bit nervous about the brake location.

The fig it ain't....happened to me going uphill at only 10mph (WOT). I went through the bars and flipped over the sled. Had to come back a day later with a new chain, case, gears, etc.

Sign me up for the belt drive!
 
I'm not sure why there are so many sceptics of the belt drive system. Do a little research. They are being run in many applications including big boosted sleds.

Ditto!

I have a friend that used to race funny cars, he decided to quit racing when the blower seized one day and sheared off the 3 1/2" diameter Monel blower shaft! The belt didn't break! The metal shaft did! and that was twenty years ago, belt technology has come a very long way since then.

For example the belt that drove that blower was 4" wide (the blower took 300 HP to turn it over). With the belt technology today the belt could be 1 1/2" wide and do the same job. So the belt they are using is effectively ten times stronger than the either the jack shaft or the drive shaft! You will be more apt to have a shaft failure than a belt failure! and how many of you have twisted a shaft off? I believe I made my Point!
 
Ditto!

So the belt they are using is effectively ten times stronger than the either the jack shaft or the drive shaft! You will be more apt to have a shaft failure than a belt failure! and how many of you have twisted a shaft off? I believe I made my Point!

so your saying the jackshaft will twist before the cogs rip out of the belt?thats 1 tough belt.
 
so your saying the jackshaft will twist before the cogs rip out of the belt?thats 1 tough belt.

EXACTLY! Point made!

From the analysis of the photo;

11mm Pitch Belt and Sprockets

Shown with 26T top and 44T bottom (1.69:1), 70T belt center to center distance calculates out to 7.5787" or 192.5mm but they probably left it the 191.26mm center to center (same CtoC of the '11's and '12's) to ease the installation of the belt (0.74mm loose). keeping the same belt would yield ratios from 1:1 (35/35) barring brake interference, to 2.88:1 (18/52) if they allowed clearance for the bottom gear (nearly the 8T 2.89"P driver diameter). Guessing 20/50 more likely 2.5:1 with conventional clearances. Any combination as long as the total tooth count (top and bottom sprockets) is 70.

The aftermarket needs to machine a billet bearing plate for the 75T belt and up the CtoC to 8.66" giving us clearance for a nine tooth driver in any Pitch and a 3" track lug. For optimum snow evacuation a 80T belt would be better, 9.744" CtoC giving you clearance for a 3"P 9T driver and 3" lug, with the 2.5:1 ratio gives a effective track speed of 80MPH!
 
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maybe tomorrows announcement will be a big bore...:face-icon-small-sho

No thanks, they tried that once, If they came out with a completely redesigned engine I'll buy one, even if its unproven, but a big bore or cranking up the hp is not what I want to hear. Just me though.
 
Now for todays pic... well... were going to have to wait till tomorrow to see the whole thing....

They've just announced the release time... 9:00am Central time (8 mst, 7 pst).

Cant wait to see the other details...

If I have anything else to add tonight... I'll let you all know...

Glad the we dont have to wait for details on the new RMK's like the flatlanders do!!


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Now for todays pic... well... were going to have to wait till tomorrow to see the whole thing....

They've just announced the release time... 9:00am Central time (8 mst, 7 pst).

Cant wait to see the other details...

If I have anything else to add tonight... I'll let you all know...

Glad the we dont have to wait for details on the new RMK's like the flatlanders do!!
They have to make us wait since we're still waiting on the first rideable snow of the year. For 2013 flatland sleds, I hear they're sending out new decal kits to all the dealers with remaining 2012s on the floor. :face-icon-small-fro
 
.... I understand the braking action is still there if your belt (or chain) breaks. What other benefit is there??

When your belt breaks and the caliper is on the jackshaft you have no connection to the drive shaft, thus you have no braking action. If the caliper is on the drive shaft you always have brakes.

Thanks for pointing out what I already wrote.
 
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