Positive generator - Polaris Sportsman 850 Touring EPS


The Polaris SPORTSMAN 850 ATV is a two-seat utility model that uses the XP platform as its base. The ATV has a two-cylinder power plant with a total displacement of 850 cubic meters. With this indicator, the motor develops a rated output power of 75 horsepower or 55 kilowatts. This model also comes with a 19.9 liter fuel tank. It is worth noting that there is a version with a 17-liter fuel tank. Polaris 850 has an electric power steering mechanism, which, in addition to providing its main task, also has a positive effect on mitigating shock loads on the front wheels, which together provides increased comfort when driving on rough terrain and off-road.

One of the key features of this ATV is the CRS passenger seat shock absorption system. It additionally ensures riding comfort for both the passenger and the driver. In essence, this system is a fifth shock absorber installed under the passenger seat.

Unlike many other ATVs, the Polaris SPORTSMAN 850 model was equipped with a double-wishbone front suspension, traditional for this type of motorcycle. The rear independent suspension received an additional stabilizer. All this made it possible to significantly increase not only the suspension travel, but also the ground clearance, which, by the way, is now 305 millimeters. Thanks to this, the cross-country ability of the equipment has also increased. In addition, wheels with a 14-inch landing diameter were used here for the first time. The use of such wheels made it possible to improve the car's handling and shock absorption. It should be noted that in many ATVs, in order to soften unevenness, the driver was required to stand on special footrests, while in this model there is practically no such need, except in rather difficult areas.

Polaris 850 uses an all-wheel drive transmission with three operating modes. In the first mode, only the rear-wheel drive of the ATV (2x4) works. In the second mode, all wheels (4x4) are connected, and in this mode the front center differential is automatically connected via an electromagnetic clutch. The third mode is the same all-wheel drive, only here a special system is already connected, which significantly helps when descending, namely, it slows down the ATV due to the transmission.

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Polaris Sportsman 850 Touring EPS: tourist and entertainment ATV, 2010, P2, 850 cm³, 70 hp, 363 kg, estimated price - 584,000 rubles.
Polaris Sportsman 850 Touring EPS: tourist and entertainment ATV, 2010, P2, 850 cm³, 70 hp, 363 kg, estimated price - 584,000 rubles.

On the way to the test, I assumed that I would have to torment another large utility vehicle with skids and jumps. But I was wrong. But not in intentions, but in expectations. The fact is that the Sportsman turned out to be not just big, but VERY BIG (for comparison: one and a half times larger than the Honda TRX680FA Rincon). I won’t say that this made me happy or sad, rather it surprised me. And not only the size, but also the layout of the car is very interesting: the in-line engine is located longitudinally, and the variator pulleys are generally located on top of each other! But in fact, this arrangement is very logical: there is no additional gearbox between the variator and the transfer case - there is no power loss in it.

⇡#Conclusions

The Chieftec Polaris PPS-850FC power supply demonstrates basic electrical parameters quite worthy of “gold” (excellent voltage stability and efficiency, low voltage ripple), has a well-thought-out and convenient fully modular cable system, a fairly reliable element base and high-quality assembly, and also does not cause complaints about acoustic comfort at moderate loads - and at low loads it is completely silent.

The main practical disadvantage of the model seems to be the increased noise of the cooling system under high load: under such conditions, the fan speed is higher than that of most “golden” models of similar output power known to us. You can also note small savings on output circuit capacitors and the traditionally modest warranty period for Chieftec.

However, the Chieftec Polaris PPS-850FC is one of the most attractively priced options in its class of fully modular 850W 80 PLUS Gold certified power supplies.

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The luxury nature of the car is clearly hinted at by the passenger seat with a separate shock absorber, alloy wheels, multi-function instrumentation and electric power steering (to admit, before meeting this Sportsman, I always wrinkled my nose about the ESD, since I had never seen a single similar device with normal feedback). Utility is indicated by the presence of a “lowering” and engine braking mode, a powerful towbar and three headlights (two stationary and one on the steering wheel). Well, as for sportiness - a powerful engine, switchable front-wheel drive and not very toothy tires. In motion, this colossus was somewhat reminiscent of a luxury SUV: the pilot, and especially the passenger, is separated from the quality of the coating by an unbreakable wall of comfort and steadfastness. It’s like in a cartoon: whether you want ice cream or cake, Sportsman Touring allows everything within reasonable limits, but at the same time does not blur their lines.

Polaris Sportsman 850 and Can-Am Outlander 850: two powerful ATVs in facts and figures

I feel like an old man sitting in a rocking chair, wrapped in a blanket, wearing a strict log and telling the neighbor boy about the good old days, when 500 cubic meters for a quad was considered a lot of cubic capacity. “In my time, 700 cubic meters was wow!!!” But with the advent of liter ATVs, 500s have become the “junior level”, and those that were the top segment are now considered “budget quads”. Confusing, right? Polaris and Can-Am each offer an 850cc model, positioning them as affordable cubic capacity machines. Both of them are perfect for those who are not looking for a way to quickly spend as much money as possible on a top-end device. Let's compare the two 2021 models.

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Handling is good for a car of this size.
Her enormous weight prevents her from becoming excellent. The bonus from heaviness is the smoothness of the ride. Handling is good for a car of this size. Her enormous weight prevents her from becoming excellent. The bonus from heaviness is the smoothness of the ride.

What struck me most was the operation of the electric power steering: nowhere, I repeat, nowhere have I seen such an adequate device - the steering wheel in any rut or mud can really be turned with one finger, and at speed the feedback from the wheels is simply excellent. In fact, it’s stupid to measure such cars with a sporting yardstick, try to jump on them and put them into a deep skid in turns. It’s not that Sportsman can’t do this, he certainly can, but he asks the driver the question: “why?” It is much more pleasant to keep the engine at half-open throttle, feeling an inexhaustible supply of thrust under the right thumb, to let the suspensions do their job, including the passenger seat suspension, which the manufacturer is so proud of and which saves the rider from constant blows to the kidneys. But a smooth ride is ensured not only by a well-functioning suspension, large wheels and adequate brakes. Let us remember physics: the greater the mass, the greater the inertia of rest. The big heavy car doesn’t move with indifferent steadfastness, but just rushes. Honestly, I would call the dynamics for this quad excessive, and the engine thrust, rather, a luxury item: it doesn’t seem to be particularly needed, but the fact that it is there is damn nice.

Reviews

  1. Many people praise this ATV, including my good friends. A year ago, based on all this, I decided to purchase this model. Based on first impressions, the technology is really quite good and does not require additional modifications. After some time I started having the first problems. The drive mode switch stopped working, followed by some knocking noises in the engine and so on. At that time, the equipment was under warranty, so these problems were corrected in a special service center. After that, everything seemed to disappear and still works to this day. Otherwise, the ATV is impressive; it has good dynamics, handling and cross-country ability.
  2. I bought a Polaris 850 from my friend, who took very good care of the technical condition of the car. The ATV is quite good on almost any terrain. I tried driving in snow and sticky mud, it goes everywhere. With a passenger, there is practically no difference in dynamics, except that it is a little more difficult for him on an ascent. As for me, this model is quite excellent for cruising.

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Along with luxury, the Sportsman has both a sporty and utilitarian element: with rear-wheel drive you can indulge in deep drifts, with full-wheel drive you can push through quite serious mud or loose sand.
Along with luxury, the Sportsman has both a sporty and utilitarian element: with rear-wheel drive you can indulge in deep drifts, with full-wheel drive you can push through quite serious mud or loose sand.

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Here it is, the wall of comfort: when forcing puddles, barely a couple of drops fall on the driver and passenger.
Here it is, the wall of comfort: when forcing puddles, barely a couple of drops fall on the driver and passenger.

But the most interesting thing began when I let my passenger behind the wheel, and I fell apart in the back: it’s extremely rare to hear so much enthusiasm from a woman’s mouth about a heavy ATV. The fragile female body, which had previously driven quads twice in its life, could not be pulled away from the steering wheel until the gas in the tank ran out. They didn’t give me a steering wheel anymore that day, but offered to sit in the back and enjoy myself. That's what I did. You sit in the back as if on a throne, the seat suspension is well tuned to the weight of the average person, but as speeds increase it becomes a little scary because the amplitude of shaking in the passenger seat is considerably greater than in the driver’s seat. But even here there is a lever to influence the situation: the exhaust is quite quiet, so any interesting words addressed to the driver pass well through the two helmets to the remnants of the mind, not seduced by the driving buzz.

⇡#Test results

The efficiency of the Chieftec Polaris PPS-850FC measured during the test is quite high.

In part, such indicators are a consequence of the measurement error of a household wattmeter, which underestimates the power “from the outlet” (which is especially noticeable at medium and heavy loads).

According to the 80 PLUS certification report for the Chieftec PPS-850FC, at a mains voltage of 115 V at 10/20/50/100% power, efficiencies of 88.02/91.69/91.77/89.75% were recorded, respectively (which is slightly higher - especially at low loads - than the PPS-750FC). In a 230 V network, the efficiency will be even higher (within 1-2%).

At low loads on the power supply, the fan is inactive - we noted its start only at a power of 30% of the rated load. The starting speed of the fan turned out to be very low (less than 650 rpm), but almost immediately a linear increase in the speed of rotation of the impeller begins: at full load the fan spins up almost to its maximum 1800 rpm.

In general, in our opinion, the speed control algorithm could well be less aggressive: heating of the case during operation is insignificant, so somewhere up to a load of 70% of the nominal it would be possible to make a “plateau” at a speed within 1000 rpm followed by a sharper increase in speed.

In general, the acoustic comfort of the Chieftec PPS-850FC is ideal at low loads (at 20% of the power the fan is inactive, no parasitic overtones from the electronics were recorded), it is quite good up to half the load, but with a further increase in output power it will become increasingly noisy - and already from about At 70% power, the noise from the fan becomes too intrusive, and when approaching the maximum, it becomes clearly uncomfortable.

The voltage stability is close to the reference: only at a voltage of 5 V at moderate loads along all lines the deviations go beyond 1% of the nominal.


12 V bus, high frequency ripple


12 V bus, low frequency ripple


5 V bus, high frequency ripple


5 V bus, low frequency ripple

The level of high-frequency ripple does not raise any questions either on the 5 V line or on the 12 V line. On the low-frequency ripple graph you can see periodic high bursts, but this is a problem with the measuring equipment - these bursts are also observed at zero load on the unit.

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Indeed, the car is so easy to drive and predictable that even a child could drive it - and this is the main drawback of the Sportsman Touring. Why do I call a virtue a disadvantage? Yes, because this ease of control can be harmful to overly self-confident people: when buying a Sportsman and equipment, do not forget to order a brain limiter from common sense.

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In many ways, the smooth ride is ensured not only by the suspension, but also by the wheels themselves due to their size (26 inches).
There are no complaints about the performance of the shock absorbers, but I would like the springs to be stiffer, especially when you start to measure the Sportsman by a sports yardstick. In many ways, the smooth ride is ensured not only by the suspension, but also by the wheels themselves due to their size (26 inches). There are no complaints about the performance of the shock absorbers, but I would like the springs to be stiffer, especially when you start to measure the Sportsman by a sports yardstick.

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The engine air intake and variator cooling are located in a place familiar to utilitarian quads - near the steering wheel under the false tank.
To replace the filter element, you do not need a tool - both the seat and the airbox lid are secured with latches. The engine air intake and variator cooling are located in a place familiar to utilitarian quads - near the steering wheel under the false tank. To replace the filter element, you do not need a tool - both the seat and the airbox lid are secured with latches.

Dear friends!

We present to your attention an application designed specifically for ATV riders around the world.

It allows you to: • See on the map all ATVs or motorcyclists who are currently online • Meet others, exchange messages • Set a meeting place • Ask for help if the ATV is stuck or broken down • Look for a company to travel together • Mark interesting places, add their photos and location on the map • Create private places • Create places offline • Visit places created by other participants and gain points • Organize competitions • Go into “invisible” mode so as not to reveal the location of your equipment • Keep up to date with the latest news in the world Off -road

The application is cross-platform, download and install it via Google Play and AppStore!

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In addition to the separate suspension of the rear seat, side handles also help the passenger.
But it’s still better to “burn” alone. And not because of the weight distribution, but because even though the back of the seat doesn’t hit the rear rider in the kidneys, the passenger himself can hit the driver in the kidneys - the amplitude of the chair’s shaking is very strong. In addition to the separate suspension of the rear seat, side handles also help the passenger. But it’s still better to “burn” alone. And not because of the weight distribution, but because even though the back of the seat doesn’t hit the rear rider in the kidneys, the passenger himself can hit the driver in the kidneys - the amplitude of the chair’s shaking is very strong.

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Specifications Polaris Sportsman 850 Touring EPS

COMMON DATA
Model year2010
Dry weight, kg362
Length × width × height, mm2197 x 1209 x 1479
Ground clearance, mm286
Gas tank volume, l17
Maximum speed, km/h140
ENGINE
Type2-cylinder, 4-stroke, in-line
timing beltSOHNS
Working volume, cm³800
Max. power, hp at rpm 70/6500
Supply systemfuel injection
Cooling systemliquid
Starting systemelectric starter
Transmission automatic, CVT, with engine braking system, low gear, reverse
Four-wheel drive pluggable
type of drive cardan shafts to axles, CV joints to wheels
CHASSIS
Front suspensionindependent, double wishbone, A-arm
Wheel travel, mm229
Rear suspensionindependent, double wishbone, A-arm
Wheel travel, mm254
Brake systemhydraulic, combined
Front brake2 disks
Rear brake1 disk
Wheelslight alloy
Front tires26 x 8–14
Rear tires26 x 10–14

The ATV was provided by the Moscow representative office of Brandt.

Positive generator - Polaris Sportsman 850 Touring EPS

Maximum comfort and safety

The Polaris 850 ATV will be an excellent choice for extreme sports enthusiasts who choose the most difficult terrain. It handles mud, swamps, forest and mountain terrain very well, and 29.5-inch High Lifter Outlaw II mud tires with large lugs on stamped steel wheels play a significant role in this. In addition, the machine is equipped with mounts for a winch and a snow plow, a radiator extension with snorkels, as well as a luggage box with a Lock&Ride fastening system.

The anatomically shaped seat provides the driver with a comfortable seating position, and deep footwells prevent slipping. Additional protection from foreign objects is provided by wide side panels and wheel arches, and dual LED headlights with low and high beams, as well as rear brake lights, are responsible for safe night trips. The vehicle also includes an analog speedometer, electronic odometer, tachometer, trip and hour meter, clock, service, gear and all-wheel drive indicators, as well as fuel level and DC power outlet.

You can buy the Polaris Highlifter 850 ATV in our online store in black.

Rating
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