The Fancooled TwoStroke Lives On


2004 Polaris Trail Touring Fan Cooled Twin 550 La Scie, Newfoundland

Top 10 New Snowmobiles For 2023 November 22, 2022 Snow Goer Staff Editors Note: The Snow Goer Snowmobile of the Year and Top 10 honors have been awarded for 33 years. Below is the explanation of our choices for 2023 - ripped from the pages of the November 2022 issue of Snow Goer.


The Fancooled TwoStroke Lives On

The fan-cooled two-stroke serves a unique need We've been trying to bury the old-fashioned 550cc fan-cooled two-stokes for the past few years now. It seems that we end up writing something about how this anachronistic powerplant no longer has a place in the world of high-tech, modern clean-burning, fuel efficient snowmobiling.


550 Fan Cooled Engine Polaris Snowmobiles Canada

A fan-cooled snowmobile engine takes this design a step further. The cylinder heads have the same type of fins to catch airflow, but because of engine size, the fins alone can't bleed off heat fast enough to cool the engine quickly enough. The fix is to add a fan to the engine, increasing airflow to achieve proper cooling.


The Fancooled TwoStroke Lives On

Surprisingly, you can still find fan-cooled snowmobiles on the market, which simply use a fan to keep their engines cool. Although both systems do a good job, they tend to overheat under certain conditions. In this post, we will discuss these cooling systems.


The Fancooled TwoStroke Lives On

Overall the 550 Indy models are anachronistic at best with their throwback fan-cooled two-stroke engine and effective but simple drive. The value 550 Indy models squeeze a tall canister exhaust under the hood to quiet the air-cooled two-stroke. We may be in the minority as we like the Fuji-sourced 544cc fan-cooled twin that Polaris uses for power.


T570 570 fan cooled review Arctic Cat Forum

Ski-Doo developed the new eDrive from its sister Can-Am ATV line and has expanded the eDrive concept to handle the all-new ACE 900 four-stroke. Ski-Doo's fan-cooled MXZ Sport 550 offers the most rear suspension travel at 15-inches. Arctic Cat's F570 combines older ACT Diamond Drive technology with the Suzuki-sourced 565cc twin.


The Fancooled TwoStroke Lives On

The Liberty 550 engine is fan-cooled to provide consistent power, regardless of snow conditions. The clutching is equipped for smooth engagement and enhanced low-speed drivability. The Right Tool for the Job The Voyageur 550 is available in two distinct versions. Choose from the nimble Voyageur 144 or added flotation of the Voyageur 155.


2001 Polaris Pro X 440 fan cooled Snowmobiles Red Deer Kijiji

From the old world, the 550 Indy retains a fan-cooled two-stroke twin complete with dual Mikuni carburetors. No electronic fuel injection for this sled. You still need to flip a fuel enriching choke lever for cold starts. Electric start is useful, but optional.


550 Fan Cooled Engine Polaris Snowmobiles Canada

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Polaris INDY 550 LXT Fan Cooled Trail Sled YouTube

[Comparison] - PowerSportsGuide What is Better a Fan-Cooled or Liquid-Cooled Snowmobile? [Comparison] Written by ppguide Maintenance Snowmobile Many say that liquid-cooled snowmobiles are better than fan-cooled, as they are more powerful, more fuel-efficient, and last longer. Others argue that fan-cooled sleds have their own advantages.


2004 Polaris pro x 550 fan cooled Burin Peninsula, Newfoundland

Fan-cooled snowmobiles are sometimes overlooked as second-class snowmobiles, though that's hardly fair. Fan-cooled sleds have some definite advantages over their liquid-cooled counterparts, namely with low-maintenance, reliable engines and a lower price. All but Yamaha is in the fan-cooled market, and each company offers something a bit different.


The Fancooled TwoStroke Lives On

The Polaris 550 fan-cooled snowmobile engine use the CVTech Powerbloc 50 drive clutch and Invance driven clutch delivering a smooth engagement, enhanced low-speed drivability, and quieter operation. They have a maintenance-free design and are easy to tune while on the sled.


2001 Polaris Supersport 550 Fan Cooled Snowmobile World

The fan I used is a 9 inch engine cooling fan from JC WHITNEY 1-800-529-4486 {catalog part number 38KS301N}. This particular fan pulls the air which is needed in this installation. The cost of the fan is $59.95 plus shipping. The fan comes with a switch but you'll need some extra wire. This picture shows a modification to the air intake.


550 Fan Cooled Engine Polaris Snowmobiles Canada

The engine was a completely new design and became a prototype for the entire snowmobile industry. The engine is an axial fan-cooled design with the fan mounted at cylinder level and driven by a V-belt from the flywheel. The engine also has the cylinders "twisted" to each side to allow the transfer passages to overlap between the cylinders.


Skidoo Tundra 550 Sport Fan Cooled Yukon Wide Adventures

#1 ยท Nov 23, 2009 Inwas wondering what's then biggest / best and reliable fan cooled motormout there. Don't care of what brand. I have a 488 fan and it has 1350 mile on it. And want to go faster. I know lighter is faster in some cases.


T570 570 fan cooled review Arctic Cat Forum

Two types of sleds, advantages and disadvantages to each. Which one's better? Is one better? In this video let's talk about how liquid cooling and fan coolin.