Superbike Planet review part 2 - MVAgusta.net
 
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post #1 of 1 (permalink) Old 12-29-2009, 08:34 AM Thread Starter
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Superbike Planet review part 2

990R & 1090RR Chassis and Rolling Gear
While both Brutale models receive similar electronics packages for Traction Control and Throttle Control, their chassis also share identical geometries for rake, trail, and wheelbase. The largest differences, aside from paint and trim aesthetics, are found in the wheels, brake components, and suspension.
Engineers strived to retain the same weight bias proven on the previous Brutales, however, the 2010 chassis has received modifications aimed at improving overall stability. An all-new chromium molybdenum steel trellis frame still features high-quality TIG welding, with dimensional changes resulting in a taller, lighter, and more rigid chassis. In external appearances, between old and new, trellis structures are similar, but using a side-by-side comparison, the new Brutale's trellis frame is quite different. This similarity in appearances was a direct goal of MV who have made every effort to retain the visual appeal of the Brutale line between models and model years.
Geometrically, the new chassis delivers appreciably more stability. The steering head has been relaxed with .5¯ more rake (from 24.5¯ to 25.0¯) and the triple clamps also differ with 2mm of added trail, now 4.07". The final move to better stabilize the 2010 Brutales is an all-new swingarm, now 20mm longer, torsionally stiffer, and 2.2 lbs lighter than the previous swingarm. The arm also gains a replaceable, forged-aluminum side insert for fall protection and a slightly larger chain guard for cleaner operation. Combined, the swingarm's dimensional changes result in just over a full inch added to the wheelbase--now 56.61". Other new pieces include a redesigned eccentric rear hub, bearings, sprocket cush-drive assembly, and rear brake rotor.
Ergonomically, efforts were made to improve rider comfort. A new handlebar is retained within a redesigned swing clamp, the mount secured to the new top triple clamp and isolated from vibration with rubber dampers. The footpeg mounts are also improved with semi-flexible inserts also aimed at reducing vibration.
Foot controls do differ between Brutale models, with the 990R being located in a fixed position. On the 1090RR, peg mounts offer eccentric peg positioning, while both models allow for control-pedal eccentric adjustability, as well. In addition, MV has now added their insignia to the peg brackets, gas cap, and mufflers, while both hand controls receive redesigned handgrips and integrated fluid reservoirs for hydraulics.
The wheel and tire packages, rear suspensions, and front brake systems differ considerably, depending on model. Mounted on the 990R are cast alloy rims fit with Pirelli Corsa III rubber. Both wheels are lighter than the previous model and the new castings account for a combined unsprung weight reduction of 2.27 lbs. Gracing the 1090RR's chassis are even lighter, beautifully forged wheels with a thin Y-spoke design. The large Brutale will be delivered with the latest Euro-spec Dunlop Sportmax Qualifier-RR tires, while both models still share the same rim and tire sizing.
MV has equipped the 990R with cast, radial-mount front calipers and four 32mm pistons. The front rotors are now 310mm in diameter, a 10mm reduction from the rotors used on the previous 910R. The latest 990R rotors attach to steel carriers with 10 floating pins. At the rear, both Brutale models share updated 210mm fixed discs, matched with a four-piston Nissin caliper, while both also use Nissin radial pumps for front-brake actuation. Stopping the 1090RR are larger 320mm rotors mounted to lighter-weight aluminum carriers, and slowed by larger, cast, single-piece Brembo calipers using four 34mm pistons.
Suspension components also differ between models. The 990R's Marzocchi forks look identical to the units on the 1090RR, however the 50mm forks differ internally with non-detent screw-type damping adjusters. In the rear, a Sachs shock featuring spring preload and a single screw-type adjuster controlling both compression and rebound damping. With the 990R, the rear shock's approximate tuning ratio for the single screw adjuster is 80% rebound, 20% compression.
The 1090RR Brutale receives a CRC internally upgraded Marzocchi fork with closer tolerances for reduced friction, as well as individual "click"-type damping adjusters. The "RR" also features a variable friction-style steering damper. This control is a direct bolt-on for the 990R, as well, but is only offered on the smaller Brutale as an option. The rear Sachs shock on the "RR" is more sophisticated with dual speed adjusters for compression damping. In addition, the high-end shock has separate rebound adjustability, spring preload, and an integrated remote reservoir. Both Brutales are adjustable for rear ride height via a new linkage. The new arm looks to be a simpler part to manufacture and uses dual locknuts instead of the previous socket-head-bolt securing design.
New Bodywork and Styling
Although MV's designers tried their best to retain the same visual lines and appearance of the Brutale, they could not resist making subtle updates and changes. The Brutale's clean frontal appearance benefits from the new poly-ellipsoidal headlight, reshaped dash panel, streamlined mirrors with integrated turn signals, larger air-intake ducting, and new radiator shrouding--which changes material from aluminum to a paint-scheme-matching thermal plastic. At the rear, each Brutale receives cleaner mufflers; now with weld-free end caps and a thinned tail section that artfully blends the rear of the passenger pillion into integrated aluminum grab rails. The rearmost identity also improves with a redesigned LED-illuminated taillight, now made stronger with diecast rear support. The paint schemes for the 990R model will be either solid red or black, each with silver-trimmed body panels. The 1090RR shines with more detailed paint, available with a pearl white and black combination, or MV's traditional red and silver. MSRPs will be $15,000 and $18,000 respectively.

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'08 910R (Gina), '04 F4 SPR #275 Track Bike (Lola), YSR50 (The Rabbit), '71 CB100 (Lil' Red), '75 RD350C (Orange Bird) restoration project, '70 Suzuki F50 (Baby Blue)
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