Does the rail cooler design result in a snow clogged tunnel?

[GBCB]

Just curious as to others thoughts on the 900's unique design for the aft mounted heat exchanger and rail mounted cooling lines. My thought is the 900tunnel accumulates more snow than traditional tunnel mounted heat exchangers because there is no heat to melt away the tunnel snow. Any theories on why Polaris thought the 900's exchanger design was practical? (lets not get into the front radiator debacle). Any benefits to this design?

 

[mountainhorse]

Actually not unique...Polaris had been using it for years on previous models.

They stopped the use on the mountain sleds in 2007 to save weight.

Other IQ models (SB, IQ) still use the design.

It's a weight thing.

 

[AndrettiDog]

Yep, work good except that they are not very friendly with aftermarket suspension kits. That's why so many offer a "conversion" or new rails in their kits.

 

[mountainhorse]

Yep, work good except that they are not very friendly with aftermarket suspension kits. That's why so many offer a "conversion" or new rails in their kits.

I think he is talking about running board edge coolers???... I think that is what he is calling "rails"

 

[GBCB]

Yes, running board coolers. Interesting to know that other sleds use this and that you think they work okay other than the weight. Still wonder about snow build up. Seems like with my old ski-doo, the snow drops out when you sit for a bit and the tunnel exchanger gets a chance to melt out the tunnel. Thoughts?

 

[94fordguy]

I have never noticed an excessive amount of snow build up on either my 800 EDGE RMK or my 900 RMK... both use basically the exact same cooling system. I REALLY like that the coolant runs through the board edges personally, usually melts off and an added advantage for spring or hard snow riding... if the sled starts to heat up, you can simply pack snow on the boards and keep going