2008 Polaris Ranger RZR

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@team san severo@
00venerdì 9 febbraio 2007 15:29
Readers, you are witnessing history in the making. Polaris completely blew the lid off the side-by-side ATV market by introducing a new ATV so revolutionary, and raising the bar so high, that it simply must define an all-new category of ATV – the Sport Recreational Utility Vehicle (SRUV). We predict that the new 2008 Polaris Ranger RZR (pronounced Razor) is going to change the face of the entire ATV industry for years to come.

We had an opportunity to test the amazing 2008 Polaris Ranger RZR, in the brutally rugged Arizona desert. One thing became very clear – you will not fully understand or appreciate the RZR until you drive it. Bold words, but true. The performance and ride experience of the RZR is nothing short of phenomenal. It is an extremely well engineered and well-executed design, with a fun-factor that may put you at risk of a permanent grin injury.



At a mere 50 inches wide, the RZR is the only truly trail capable side-by-side in its class. To put things in perspective, consider that the Can-Am Outlander is only 4 inches narrower than the RZR, yet the RZR comfortably carries two people seated side-by-side. The RZR is also the lightest side-by-side in the industry, weighing in at a featherweight 945 pounds. Couple the light weight, and narrow footprint, with the lowest cage height of any side-by-side in the industry – and you have the world’s most versatile side-by-side capable of reaching even the remotest of places.

Let’s take a closer look at why the RZR is special.

Powerplant and Transmission.

The Big Bore 800 (760 cc) Twin Cylinder 4-stroke engine provides the RZR with superb low-end torque, an impressive acceleration curve of 0-35 in about 4 seconds and a claimed top speed of 55 mph! In our ride tests, we found that the RZR offered all the power one could want – especially in such a nimble and lightweight package. Driving the RZR is a total blast. It didn't take long to get comfortable with it. We quickly fell into a routine of charging into a corner, tapping the brake while pitching the wheel, and then hammering the throttle as we simply flew down the straights! The RZR ate up everything that we threw at it and it almost begged us for more. The RZR's respectable power-to-weight ratio resulted in it easily outperforming every other side-by-side that we have tested in the past.

The big 4-stroke thumper is fed via an altitude and temperature compensating Electronic Fuel Injection (EFI) system. The lack of a carburetor means no jetting changes are necessary between driving at sea level or when driving in the mountains. Access to the engine compartment is easily achieved by popping out the two front seats and then removing an access panel. No tools are required, which is a real boon when on the trail.

One of the keys to the incredible stability of the RZR is its very low center-of-gravity. Polaris engineers wisely located the engine low in the frame behind the front seats, but ahead of the rear axles. The riders do not sit on the engine. This gives the RZR the lowest center of gravity of any side-by-side and positions the riders 7 inches lower then on competitive side-by-side vehicles. Keeping all of the mass low in the frame, with a low CG, means that the RZR is very stable. Weight bias is about 45 percent to the front.


The transmission is a PVT (Polaris Variable Transmission) which was modified slightly for placement into the frame of the RZR. The engine and transmission mount to the frame using a 3-point vibration isolating mounting system. Gear range is engaged through the use of a floor-mounted shift lever which places the vehicle into Park, Neutral, Reverse, Low or High. The vehicle must be stopped whenever shifting.

We were glad to discover during our testing that the shift lever offered plenty of mechanical advantage. At one point we were forced to stop on a very steep, downward, incline and to put the vehicle into park. This raised concern that it might be difficult to move the shift lever back into the “high” position – however, that was not the case. Operation of the shift lever was both smooth and positive on every occasion. While the RZR does not have a parking brake, Polaris assured us that when the RZR is placed into park, the driveline is locked in such a way that no parking brake is necessary.

Suspension and Handling.

Luckily, the RZR’s low center of gravity does not come at the cost of compromising ground clearance! The RZR has a full 10 inches of ground clearance, which came in mighty handy when we launched it over the top of some of the larger rocks in the test area. We never did manage to hang the RZR up on the frame, but that may have been due largely to the awesome traction, which kept the RZR constantly on the move.



The biggest surprise we encountered when testing the RZR was the suspension system. We took the RZR over whoops that would have nearly swallowed a small Volkswagen -- yet the RZR never once bottomed out nor did we experience the bone jarring “spinal tap” that sometimes happens when a suspension is moving up and your body is moving down.

The wheelbase of the RZR is a little longer than that of a typical ATV, which results in a “smoothing out” of rough sections and whoops. It was downright pleasant to drive the RZR over any type of terrain regardless of how rough. Rider effort and fatigue is almost non-existent when driving the RZR over rough terrain.

Exceptional suspension performance is also attributable to the 9 inches of suspension travel up front and 9.5 inches in the rear. The front utilizes an A-arm suspension with an anti-sway bar. The anti-sway bar prevents the front from “pushing” on corners or introducing any noticeable body roll. The rear features a “rolled” Independent Rear Suspension System (IRS), which also has an anti-sway bar. What Polaris means by a “rolled” IRS is that the wheels are canted backwards so that as the wheel travels upwards it also moves backwards -- effectively elongating the wheelbase. They call this concept “recessional wheel travel.” The theory is that it allows the suspension to absorb far more shock than a traditional suspension system that typically only moves up and down.

Traction and Cornering.

Polaris equipped the RZR with a true all-wheel drive (AWD) traction system. The AWD is enabled or disabled via a dash-mounted rocker switch. When enabled, the RZR senses wheel slippage and automatically engages the AWD. Then when traction is no longer needed, the system automatically reverts back to 2WD. Why would anyone ever want to disable the AWD via the switch? It’s Fun! In 2WD mode the RZR goes from cornering as-if-on-rails to being able to power slide and play!



During our ride testing we appreciated the responsive, light and predictable, steering so much that we opted to leave the AWD engaged all the time. Its confidence inspiring to know that when you summit a treacherously steep foothill, and suddenly find a hairpin turn is the only thing between you and going over the edge, that a mere flick of the steering wheel results in a smoothly executed turn with little drift.

The AWD performed exceptionally well in every situation that we encountered. The RZR climbs like a mountain goat. In fact, we climbed hills that would have given us pause on a lesser machine. When faced with respectable-sized rocks blocking the trail, you merely drop the RZR into low gear and have at it. While conditions didn’t allow us to test the RZR in mud or snow, we have no reason to believe that the RZR wouldn’t shine equally well in those situations. Perhaps in the future we will have an opportunity to test in those conditions.

Specifications

Engine: 4-stroke twin-cylinder

Displacement: 760 cc
Cooling: Liquid-cooled

Carburetion: Electronic Fuel Injection
Alternator: 500 watts

Starting: Electric/12V-18 AH
Transmission: Automatic PVT (Polaris Variable Transmission)
Gear range: dual range (high / low) forward, neutral, reverse, park

Suspension front: Double A-Arm w/Anti-Sway Bar

Wheel Travel front: 9 inches

Suspension rear: Rolled Independent w/Anti-Sway Bar
Wheel Travel rear: 9.5 inches
Front tire: 25 x 8 - 12 Maxxis

Rear tire: 25 x 10 - 12 Maxxis

Front brakes: Hydraulic Disc, Dual Piston Calipers
Rear brakes: Hydraulic Disc, Single Piston Calipers
Overall length: 102 inches
Overall width: 50 inches
Overall height: 69 inches

Wheelbase: 77 inches

Ground clearance: 10 inches

Bed capacity: 42 inches x 22 inches. 300 Pounds

Towing capacity: 1500 pounds

Fuel capacity: 7.25 gallons (US)

Dry weight: 945 pounds

Multi-function Speedometer: Fuel, Speed, Hour Meter, Odometer, Trip, AWD Engagement Indicator, EFI Diagnostic Codes, Gear selection, Clock

Color choices: Red, Green

MSRP: $9,999 (US), $13,999 (Canadian)

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