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Articulo Archivo SR - TL1000R
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Dan_TL1000R
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Desde: 23/Mar/2013
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#1•28/Ene/2020, 12:15

Enlace Cycleworld : https://www.cycleworld.com/sport-ri[....]-on-suzukis-v-twin-powered-tl1000r/

SR Archive: Suzuki's V-Twin-powered TL1000R Ride Review

Things are getting serious

By Kent Kunitsugu

February 2, 2017

This article was originally published in the June 1998 issue of Sport Rider magazine.

First ride on Suzuki TL1000RGetting serious aboard the Suzuki TL1000R.Photography by Gold & Goose

The statement from Mr. Hiroshi Moritake, project leader for Suzuki's new TL1000R, left no doubt as to his company's intentions concerning their latest V-twin sportbike.

"The concept behind the TL1000R is simple: Build a V-twin with the potential to win Superbike races."

Suzuki TL1000R first ride"The concept behind the TL1000R is simple: Build a V-twin with the potential to win Superbike races."Photography by Gold & Goose

Ever since the blood-red desmos from Italy started showing Japan the V-twin's performance potential in Superbike competition, some of the Big Four's R&D departments have been busy burning the midnight oil in a mad rush to build one of their own. Suzuki's own TL1000S created a stir upon its introduction last year, with features like a 114-horsepower powerplant, and an aluminum, trellis-type, oval-tube frame utilizing a unique rotary damper in place of a standard single rear shock, showing they were serious about this V-twin sportbike business. Nevertheless, initial Japanese offerings last year seemed to be a tad soft in focus, as if they were a precursor to even greater things in the future.

The new Suzuki TL1000R definitely makes no bones about its intent. Besides the racy, full-coverage bodywork (complete with a unique, aerodynamic "shark nose" front fairing), the TL-R does away with the S-model's trellis-type chassis in favor of a beefy twin-spar frame, similar to its GSX-R four-cylinder cousins. Various updates were made to engine internals as well, not only to increase power output in stock form, but to maximize performance potential when fully modified for competition use.

Suzuki TL-R crankcaseA rib section was built into the TL-R’s crankcase casting to deflect oil returning to the sump from the cylinder heads away from the primary drive gears, reducing oil agitation and the resulting mechanical horsepower losses.Photography by Gold & Goose

Suzuki decided to showcase the new TL1000R’s racetrack potential by introducing it to the world’s moto-press at Eastern Creek International Raceway, down in Australia. Two days of apex-strafing, to-the-limit riding at the Creek would be sure to expose any flaws. (Although our riding was restricted to racetrack only; no street seat-time was involved, which hampered our initial impressions somewhat.)

In designing the TL-R, Suzuki engineers concentrated on three areas during the initial concept phase. First and foremost, obviously, was performance. The R-version motor received the usual host of power-boosting changes—a slightly redesigned ram-airbox, dual-injector throttle bodies, hotter cams, forged pistons, revised ignition, etc.—all of which increase power output to a claimed 135 horsepower at the crank. Chassis-wise, the aforementioned twin-spar, aluminum frame is mated to a heavily braced swingarm. The stout-looking assembly makes the S-model’s trellis-type framework look somewhat flimsy by comparison. The separate rotary damper/spring unit rear suspension setup was slightly redesigned, with the complete assembly relocated for easier access. The damper unit gains a temperature-compensating feature, while both components work through revamped linkages.

Suzuki TL1000R throttle bodiesAlthough injector throttle body sizes remain at 52mm, the switch to dual injectors and a redesigned ram-airbox mean better breathing at high rpm levels.Photography by Gold & Goose

Aerodynamics was the next area to be dealt with. Wind tunnel testing has become a standard development tool, and Suzuki engineers used it to design a fairing that features a slant-nosed front cowling that protrudes further forward than any current sportbike, in order to slice the wind better. Twin-stacked radiators cut the frontal area, while the exhaust canisters tuck up next to the tail section and are shaped to smooth the airflow behind the rider’s back, reducing turbulence trailing the motorcycle—another source of aerodynamic drag.

Suzuki TL1000R V-twin engineVarious engine modifications have boosted the V-twin’s power output to 135 horsepower at the crank, with an extensive list of optional racing kit parts bumping that even higher. The TL-R’s engine behavior reminded us more of an in-line four than a V-twin.Photography by Gold & Goose

The final section was what the Suzuki engineers referred to as “setup freedom.” The intent of the TL1000R is to be a platform upon which to build a V-twin Superbike racer; this means total adjustability is of paramount concern. It’s imperative that the rider’s personal preference, different circuits, and varying track conditions can be dialed-in to the bike. To this end, Suzuki is making an extensive list of racing kit parts available, including a range of chassis- adjustment components. Key chassis areas—such as rear ride height, steering stem rake, steering stem offset, and swingarm pivot position—can all be altered using these parts. (A vast array of engine kit parts are available as well.)

Suzuki TL1000R frameBuilding a V-twin with the express intent of Superbike racing potential meant fitting it with a chassis where flex wouldn’t be a problem. The TL-R’s twin-spar, aluminum alloy frame and braced swingarm look beefy enough to handle the job.Photography by Gold & Goose

While we didn’t get a chance to experiment with varying chassis adjustments using some of the racing kit parts during our sessions at Eastern Creek, we did find that the TL1000R’s stock setup worked just fine. With an incredibly short wheelbase measuring just 54.9 inches, mated to seriously steep rake/trail figures of 23 degrees/90.6mm, we were expecting the TL-R to be a twitchy, nervous-handling beast requiring careful inputs through Eastern Creek’s bumpy sections. Surprisingly, the TL-R worked quite well, displaying excellent stability even while accelerating hard over the gnarly bits. Like most machines with radical front-end geometry, however, the TL-R was very sensitive to suspension setup. And considering the rake/trail numbers, making that initial flick into turns took a bit more muscle than we’re accustomed to with a V-twin.

Suzuki TL1000R Test rideSuzuki designed the slant-nosed front cowling to allow the TL1000R to slice through the wind.Photography by Gold & Goose

The difference in chassis feel compared with the S-model was readily apparent, especially when railing through Eastern Creek’s tight and twisty back section. Whereas the TL-S occasionally made you feel as if you were riding high above the tire contact patches during hard cornering, the TL-R feels much more planted, inspiring greater rider confidence. Stability under hard braking was very good, with the R-model’s six-piston calipers providing excellent power, albeit with a tad less feel than we’d like.

Suzuki TL1000R batteryThe TL-R’s battery sits in a compartment on the left side of the engine, accessible through a removable panel. Weight distribution thinking at work, possibly?Photography by Gold & Goose

The TL-R’s engine proved to be an interesting combination. Due to its racing intent, the bulk of the motor’s power is up top, similar to an in-line four. The TL engine is also revvier than most V-twins, which means getting the best drive off the corners requires you to spool it up much more than expected with a V-twin. Top-end acceleration and speed were excellent, although midrange grunt seemed to actually be lacking compared with the S-model, considering the engine modifications between the two. This is probably the first V-twin we’ve ever had to ride like an in-line four. (We later found out that much of that midrange torque was supposedly lost due to lean jetting, in order to pass EPA pipe-sniffers and to keep the fuel mileage up. Remember the TL1000S’s dismal range? Apparently a few clicks from the race kit “jetting programmer” is all it takes to restore this lost power. We’ll see.)

Suzuki TL1000R frontendThe biggest change up front with the new TL1000R is the addition of six-piston calipers, similar to GSX-R750 units. Front end feel was markedly improved over the S-model.Photography by Gold & Goose

Since there was no street riding during this intro, evaluations concerning rider ergos, engine vibration, and suspension action while cornering at a street-sane pace, are difficult to quantify. Initial impressions of the riding position felt very similar to the GSX-R; racy, but not enough to be insufferable. The rider’s torso is canted forward more than on the TL-S, but a wide, flat, seat and decent legroom keep things from getting too cramped up.

Suzuki TL1000R swingarmThe TL-R’s massive swingarm works through a revamped linkage setup to the relocated rotary damper and spring unit; ease of service is an immediate plus. A temperature compensating system similar to the GSX-R750’s has been fitted to the damper unit.Photography by Gold & Goose

As far as track impressions go, we were impressed with Suzuki’s new TL-R. Its racing intent and performance potential are readily apparent, and the bike is designed with that concept in mind. We’re sure that 90 percent of the bikes sold won’t remain stock for long. Whether its performance will be enough to put it up with the sportbike world’s class elite will have to wait until a full test. Stay tuned.

Suzuki TL1000R
Suggested Retail Price:$9499
Engine type:4-stroke V-twin, liquid-cooled
Displacement:996cc
Bore x stroke:98 x 66mm
Compression ratio:11.7:1
Carburetion:Mikuni electronic fuel-injection, two 52mm throttle bodies
Transmission:6-speed
Front tire:120/70-17 Dunlop D207 Sportmax
Rear tire:190/50-17 Dunlop D207 Sportmax
Rake/trail:23 deg./3.6 in. (90.6mm)
Wheelbase:54.9 in. (1395mm)
Seat height:32.5 in. (825mm)
Claimed dry weight:434.2 lb (197kg)
Suzuki TL1000R 1998 Barcelona

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