A tourer with full fairing of the comfortable. Dynamic riding made possible: this is what the RT model stands for at BMW Motorrad. Now the manufacturer has developed the latest edition of the driving-friendly tourer in the form of the R 1200 RT. The model is currently being launched with its new power unit – the boxer produces 92 kW (125 hp) at 7750 rpm. Achieves a maximum torque of 125 Nm at 6500 rpm – presented at the Eicma 2013 in Milan.
Essentially, the new boxer engine is similar to the DOHC powerplant from the BMW R 1200 GS. For use in the new R 1200 RT, however, the drive system has been optimized with regard to the special requirements of a tourer. It has an output of 92 kW, its maximum torque is specified as 125 Nm at 6500 rpm. As the motorcycle experts from Munich explain, the torque is significantly higher than that of the predecessor engine over the entire speed range. Over the entire usable speed range more than 100 Nm are available.
Compared to the engine of the predecessor model, the new engine with a displacement of 1170 cubic centimeters continues to rely on air/liquid cooling, but the previous cooling medium oil has been replaced by water. The higher heat absorption capacity of water ensures more efficient heat dissipation. Thus for even greater thermal stability on long tours. With this so-called precision cooling, only the engine elements subject to particular thermal stress are cooled by the cooling water. In addition, the engine continues to rely on air cooling.
Flow through the cylinder heads
For optimum filling, the flow through the cylinder heads is now in a vertical direction, and for the first time on a BMW motorcycle boxer engine, the six-speed transmission and an oil bath clutch with anti-hopping function and low operating forces are integrated into the engine housing, says the Munich-based company. The secondary drive is maintenance-free via the cardan shaft, which is now located on the left-hand side of the motorcycle.
For use in the new R 1200 RT, the crankshaft of the boxer engine and the alternator were given increased flywheel masses. As the engine designers explain, these ensure even smoother engine running and offer even more comfortable running characteristics. Lower vibrations in the powertrain are intended to contribute to pleasant, fatigue-free driving, especially on long journeys. The increased comfort requirements are also to be taken into account by the longer secondary gear ratio, which ensures a lowered engine speed level of the boxer engine.
Sensitive throttle response
According to the manufacturer, further improvements in the drive culture of the new R 1200 RT are also reflected in an even more sensitive throttle response. A reduced operating angle and lower restoring forces of the throttle twist grip further enhance riding comfort. Last but not least, the engineers were also able to optimize the dynamic side of the R 1200 RT: With the aid of significantly increased tractive power compared to the predecessor model, it enables even more powerful acceleration out of bends, coupled with a significantly increased revving pleasure of the engine.
Read more about the new BMW R 1200 RT on page 2.
Eicma 2013: The new BMW R 1200 RT
In Road mode, the control systems are set so that performance and comfort are optimally balanced on all roads. Rain mode allows the motorcycle to be adjusted to road conditions with low friction values. In addition, the throttle response is smooth in this mode. The control systems respond earlier and the damping of the suspension struts is softly adjusted to suit the conditions.
The special equipment Riding Modes Pro also includes the "Dynamic" riding mode and the Hill Start Control function. Dynamic mode lets you discover the sporty face of the new BMW R 1200 RT. Spontaneous throttle response, restrained intervention of ASC and ABS and the taut damping of Dynamic ESA – if factory-fitted as an optional extra – allow its dynamic potential to be fully appreciated.
Hill Start Control
The new Hill Start Control function is a world first. This makes it possible to stop effortlessly on inclines while the engine is running, without the driver having to permanently apply the brake lever. This makes hill starts much easier. Is a valuable support, especially on a fully loaded tourer. The partially integral ABS braking system makes it possible for the rear braking system to be controlled separately for this purpose, explains the manufacturer. When Hill Start Control is activated, pressure is built up in the hydraulic rear-wheel braking system so that the motorcycle stops at an inclined plane. The Hill Start Control is a pure comfort system to facilitate stopping and starting on hills and is not to be confused with a parking brake.
Shift Assistant Pro for gear changes with virtually no interruption in tractive effort
Another world first in series motorcycle construction is the BMW Shift Assistant Pro (as an optional extra ex works). Compared to the shift assistant already used on super sports motorcycles such as the BMW S 1000 RR, its function has been expanded for use in the new R 1200 RT and adapted to the specific requirements of the touring range. Shift Assist Pro enables upshifting and downshifting without clutch or throttle actuation in the load and engine speed ranges relevant for driving, which offers the driver both an increase in comfort and greater dynamics. The majority of gearshifts can be carried out by means of the shift assistant; one exception, for example, is pulling away.
During acceleration, the throttle no longer needs to be closed for shifting, and propulsion takes place with virtually no interruption in tractive effort, the experts explain the function. When decelerating and downshifting (throttle closed), the engine speed is automatically adjusted via the intermediate throttle. The gears are engaged as usual via the pedal lever. The shifting time is significantly reduced compared to a shifting process with clutch actuation. However, the Shift Assistant Pro is not an automatic, but merely assists in shifting gears, they further emphasize. When shifting gears with Shift Assistant Pro, the cruise control is automatically deactivated for safety reasons.
Technically, a sensor on the transmission output shaft detects the rider's desire to shift and initiates shift assistance, they explain. By selectively increasing or reducing the engine torque, the load is then removed from the drivetrain so that the shift pawls of the next gear pair can engage with each other as when shifting with clutch engagement. No shift assistance is provided during gearshifts with the clutch engaged or when shifting up with the throttle closed (overrun mode), nor during deceleration. Even if the shift lever is not in the starting position when shifting up or down, no shift assistance is provided.
Downshifting with the throttle open is supported, but can lead to strong load change reactions, especially in low gears. Strong load change reactions can also occur when shifting without using the clutch during constant-speed rides, the experts from Munich emphasize, and therefore recommend shifting only with clutch actuation in these riding situations. Use of the shift assistant in the area of the rev limiter should also be avoided.
Read more about the new BMW R 1200 RT on page 3.
Eicma 2013: The new BMW R 1200 RT
Like the engine, the chassis concept of the new BMW R 1200 RT is based on the components of the R 1200 GS. Thanks to the new, now continuous and thus stiffer main frame, which incorporates the BMW Telelever and BMW Paralever suspension, the R 1200 RT's directional stability has once again been significantly improved. At the same time, a stiffer mounting of the suspension elements has made it possible to achieve more sensitive response and better feedback. The large steering angle of 36 degrees per side enables a very small turning circle by tourer standards.
In the area of the BMW Evo Paralever rear wheel guide, the lower suspension strut area is now also better protected against possible damage with the enclosing swingarm.
BMW Motorrad Dynamic ESA (Electronic Suspension Adjustment) semi-active suspension is offered as an optional extra ex works. Front and rear suspension travel sensors detect the vertical movements of the respective wheel guides as well as other information, and the damping is automatically adjusted to the detected conditions depending on the riding condition and the rider's maneuvers. Dynamic ESA is integrated into the operating concept of the riding modes.
In the basic function, the damping levels familiar from the previous BMW ESA can be set (soft, normal, hard) as well as the load condition (rider, rider with luggage, rider and pillion). As with the further development ESA II, the spring base and spring rate are also adjusted. The motorcycle specialists explain that this already gives the rider the opportunity to enjoy optimum roadholding with crystal-clear feedback at all times, regardless of the load. An additional safety benefit of the new BMW Dynamic ESA is that when braking and accelerating, the chassis settings are influenced in such a way that the riding position remains virtually unchanged and the directional stability increases significantly, they reveal more. In addition to increased safety, this ensures the R 1200 RT's thrilling rideability.
Dynamic headlight front with one main and two driving lamps
The headlight front of the new R 1200 RT is based on the headlight concept of the BMW Motorrad K 1600 models. Two driving lamps on the left and right flank a centrally positioned main headlamp. This provides good illumination of the road ahead. If it should be necessary – for example with extreme loading – despite adjustment of the chassis to adjust the headlight lower, this is easily and simply accomplished by means of a handy toggle on its underside.
The daytime running lights, which are available as an optional extra ex works, also offer added safety. It is projected in the direction of travel by two light guides arranged around the driving lamps by means of optical prisms. During the day, it is switched on either automatically via a light sensor or manually using the daytime running light button instead of the main headlamp.
When darkness falls or the vehicle enters a tunnel, the system automatically switches to the main headlights. This makes the motorcycle more visible and differentiated compared to other road users. With the help of LED technology, the overall energy consumption is low. Another advantage is the long service life of the LED elements. In countries without daytime running light homologation, the special Headlight Pro equipment is available in the form of light rings with parking light brightness when the low beam is switched on. The rear light and the front turn signal lights. Rear lights are already equipped with LED technology as standard. In conjunction with the white clear-glass look, the R 1200 RT also looks technical, modern and dynamic in these details. Unique in the motorcycle market is the use of indirect LED lighting instead of individual, directly emitting diodes.