Anybody have the chance to see pro rmk and xp side by side in deep snow. Like to hear some opinions
etec or pro rmk
- Thread starter apex 9420t
- Start date
An excerpt from a post I made a few months ago, after we had a Pro RMK out for a day ...
"Is the Pro the best climber? not on this day; the XP will outclimb it handily. I'm not a Skidoo guy but that XP will get up there, I've seen it over and over... I snow checked the Pro RMK for the weight and handling. - JMO - "
"Is the Pro the best climber? not on this day; the XP will outclimb it handily. I'm not a Skidoo guy but that XP will get up there, I've seen it over and over... I snow checked the Pro RMK for the weight and handling. - JMO - "
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volcano buster
Well-known member
If you are comparing apples to apples (as best you can) is the new ProRMK compared with an '08-09 XP or a '10 with the steeper approach angle on the track. If the steeper approach angle of the track doesn't counteract as bad as I thought, then what enables the XP to climb better besides a wider track?
I'm picturing similar Hp to the driveshaft, similar diameter drivers as they use the same pitch, similar friction on the hyfax and roughly the same idler/bogey combination causing drag.
I'm picturing similar Hp to the driveshaft, similar diameter drivers as they use the same pitch, similar friction on the hyfax and roughly the same idler/bogey combination causing drag.
I'm not an expert on the XP, but the extra track width I'm sure has an impact. The XP in our group is a '10. It climbs like a tractor. I was never big on the SKi Doo handling. I ordered the Pro RMK because I like the handling better. JMO
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WAmtnsledr
Well-known member
the XP has a 75.7 mm stroke, while the pro has a 70 mm stroke, maybe that helps it climb better.
The extra 20+HP doesn't hurt the XP either 
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Tec
Well-known member
My opinion, both sleds are only as good as the rider, neither is going to make you a burandt Jr! I bought a Pro, Why? Because my local Doo dealer sucks donkey balls.
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WAmtnsledr
Well-known member
The extra 20+HP doesn't hurt the XP either
i think the pro put out 143 hp on the dyno and the new XP dynoed at 163.9 hp
431 lbs./143 hp (pro rmk) = 3.01 lbs per hp
454 lbs./163 hp (Summit X) = 2.78 lbs per hp
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I have rode Doos for 6 years now and if I was in the market for a new sled it would be the Pro without questions. For boondocking and technical riding it was the funnest sled I have ever rode. But I will buy a used sled from now on and let someone else take the hit.
I was lucky enough to ride the pro in the trees in some deep snow for a few hours early in April and me and Motoman had a great time swapping the Pro and playing in the trees.
I was lucky enough to ride the pro in the trees in some deep snow for a few hours early in April and me and Motoman had a great time swapping the Pro and playing in the trees.
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snowmobiler
Well-known member
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clutch man
Well-known member
But doo is built to the top not much more to gain
The pol just with a pvc had 150 ish also tested HP on a sled that the chit had been ran out of it. Polaris has always woke up with a pipe unlike Ski-doo.
Add a pipe and lose wieght and gain power. Lets see where were at then.
come on just who leaves one stock
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WAmtnsledr
Well-known member
exactly. do the same mods to each sled and see which one gains more hp. with some power mods and weight savings the pro will be close to if not highmark an XP in a hillclimb and it will be a lot funner and be a much better boondocker. i was just comparing stock power to weight ratio, which doesn't even matter that's just on paper and who rides a sled dry anyway.
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WAmtnsledr
Well-known member
it says right on their site, but its probably the same kinda situation as the 154 hp dragon that really puts out 143 hp lol
http://www.ski-doo.com/en-US/
http://www.ski-doo.com/en-US/
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Come on guys, a mfr. would NEVER lie about HP...or weight
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volcano buster
Well-known member
I was not attempting to have a battle of who claims bigger or smaller numbers. If indeed the Doo has the 20 additional Hp, then they should be beating up on the competition. I'm more curious as to the technical side of the set up. Primarily, at WOT pulling a hill, most factors should be equal besides the obvious track width and I'm not sure if the lug depth is making all that much difference at this time, but it might slightly. I asked if the XP was the '10 model due to the steep track approach angle as I was under the assumption that this would create a more pronounced trenching effect and not let the track climb up on the snow as quickly and efficiently. If on the other hand, the front of the suspension collapses and creates a full length approach angle where each consecutive inch of rail has equal opportunity to take a bite and carry the load, then I can see this being a drastic help in outclimbing a sled that has to first pack the snow down, then attempt to run on it.
Is the XP able to carry a higher track speed than the Pro due to the alleged higher Hp, more efficient clutching, less rolling resistance in the drive train? This in my mind could also explain how it outclimbs the Pro if these factors were shown to be true.
Is the XP able to carry a higher track speed than the Pro due to the alleged higher Hp, more efficient clutching, less rolling resistance in the drive train? This in my mind could also explain how it outclimbs the Pro if these factors were shown to be true.
It's all speculation at this point.....there will be changes to both sleds (prototypes that were out there vs production in the fall).
Dyno runs on both proto's did show aprox. 20hp difference, but I believe that Polaris will see more by production and possibly less from Doo....but no one knows for sure. I think we'll see the same with the dry weight....Poo will come in a bit heavier than advertised and Doo a little less, which will make them VERY close in weight.
The '10 XP susp DOES NOT do as well on the deep hills as the '08-'09 in stock form....but this is easily fixed to keep the skis down, then it's as good and all-around better handling than '08-'09's. The stock Doo track for '11 will also be an improvement.
If Poo gets their engine gremlins figured out and the new chassis doesn't have any issues, they should both be great sleds.
Dyno runs on both proto's did show aprox. 20hp difference, but I believe that Polaris will see more by production and possibly less from Doo....but no one knows for sure. I think we'll see the same with the dry weight....Poo will come in a bit heavier than advertised and Doo a little less, which will make them VERY close in weight.
The '10 XP susp DOES NOT do as well on the deep hills as the '08-'09 in stock form....but this is easily fixed to keep the skis down
, then it's as good and all-around better handling than '08-'09's. The stock Doo track for '11 will also be an improvement. If Poo gets their engine gremlins figured out and the new chassis doesn't have any issues, they should both be great sleds.
In CO snow we've found the exact opposite to be true. Increasing approach angle on a cat has helped the sled "get up on plane" better/ quicker. Perhaps the doo sees the same improvement?
Far as I'm concerned, it's simple. If you like sidehilling, playing, having fun, enjoying the sled even when there isn't 2+ feet of pow, get the pro. If you're more concerned about the handling on those deep days only & straight line climbing, then the XP kicks ***!!!
They're just such different machines that it's got to come down to preference.
For me, I HATE the handling of a doo unless there's a bunch of snow, but if there is, it's the king unless you've got a bunch of mods. (I question the reliability of either motor myself, though the newer XP's seem to be more reliable than the first two years)
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