New Concept Bike By Touratech – R1200GS Rambler
Touratech develops one of the lightest R1200GS conversions ever created.
Touratech has unveiled a lightweight 1200cc adventure bike with high performance potential. The project, code-named K199, was a challenge accepted by Touratech to build an enduro machine based on the current liquid-cooled R1200 power-plant for BMW Motorrad.
The mission was to create a water-boxer dirt bike that weighed under 200KG (440lbs) ready to ride. This modern-day interpretation of the legendary HP2 Enduro, dubbed the Touratech R1200GS Rambler, is a race-ready powerhouse built for agility off-road. Weighing in at 199kg (438 lbs). The result is one of the lightest R1200GS conversions ever created.
Built in collaboration with BMW Motorrad, the Rambler is Touratech’s modern interpretation of the BMW HP2. With that vision in mind, it is a machine that not only looks like a performance focused bike, but also rides like one.
Two prototypes that differ only in color were created: one with the black-grey-yellow Touratech color scheme, and the other in classic BMW Motorsport colors white, blue and red.
To achieve their vision, Touratech developers combined the chassis and engine-gearbox unit from the R1200R Roadster model with the a final drive and swing-arm from the R1200GS to maximize the suspension travel and boost ground clearance. This gives the Rambler a directly responsive, high-torque drive system with 123 HP. Basing the prototype on the Roadster provided another advantage: the model comes fitted with a telescopic front fork standard rather than the telelever front end of the R1200GS. The chassis was then fitted with a custom aluminium triple clamp that holds a set of re-worked forks from an F800GS Adventure.
A long-travel fork cartridge conversion kit from Touratech Suspension was fitted into the F800GSA fork legs and set up for 230mm (9.1”) of travel. Performance for the rear comes by way of a long-travel Touratech Suspension Extreme shock with 200mm (7.9”) of travel. The Metzler Karoo 3 rubber meets the road with Haan Excel wheels 21″ front and 17″ rear.
With suspension tuned by Touratech Suspension the boxer is extremely stable on its wheels, even at high speeds. The use of modern materials and technologies, fairing sections made from super-lightweight aluminum tubing in conjunction with carbon fiber, a titanium exhaust system, and a powerful but less heavy replacement lithium-ion battery help to bring the overall weight down. Compared to the standard model, the Rambler has shed nearly 50 kilos (110 lbs), making it incredibly agile.
Once the motorcycle was stripped of its fairing and all unnecessary mounting brackets, the frame was reinforced for hard off-road use. The original fairing was ditched to make way for the custom lightweight airbox with fairing made from carbon fiber, and adapted protection bars.
The bike sports a self-supporting, 16.2-liter aluminum fuel tank, which forms part of the subframe structure that supports the rider and rear fender. Together with a separate plastic tank (1.8 liters) housing the fuel pump, the total fuel capacity is 18 liters (4.75 gallons). The slim seat was crafted from Polyurethane using a method that requires no seat pan and is therefore extremely light. Ultralight master cylinders & titanium footpegs were also utilized for maximum weight savings.
Several pounds were shed on the Rambler by going to a single-disc brake setup,like those found on enduro bikes, yet it also utilizes ABS. A Carbon Fiber skid plate protects the crankcase and sump when riding the Rambler in extreme rough and rocky terrain.
The Rambler is a real ready-to-go concept bike, with an amazing off-road potential. A project that shows the Touratech development team’s remarkable technological abilities and the great merge of their touring and off-road divisions. While technical components were manufactured by Touratech AG, the clay modeling, design and prototyping were carried out by sister company TT-3D in Murnau, Germany. There currently are no plans for a production version of this bike but it’s been fun for the Touratech team to rise to the challenge and create a modern day version of the HP2. Perhaps BMW Motorrad will feel inspired enough to produce something like this again.
Modifications and materials:
|Airbox:||carbon fiber reinforced plastic with original air filter (Touratech / TT-3D)|
|Fairing mount:||aluminum tube construction (Touratech)|
|Fuel Tank:||aluminum, lowered side walls, capacity approx. 4.2 Gal (16 liter) (Touratech / TT-3D)|
|Fuel pump:||in separate plastic tank (1.8 l) beneath the main tank|
|Total Fuel capacity:||4.75 gallons / 18 liters|
|Seat:||rally seat made from PU foam (Touratech / TT-3D)|
|Frame:||unnecessary mounting brackets removed|
|Rear sub-frame:||integrated aluminum fuel tank sub-frame (Touratech)|
|Handlebar & controls:||Magura TX handlebar, very light high-performance radial-pump master cylinders for clutch and brake (Magura HC3)|
|Triple clamp:||custom-made by XTRIG|
|Brakes: front:||1 x brake disc Ø 300 mm; rear: 1 x brake disc Ø 276 mm|
|Brake lines:||stainless steel braided hose (Stahlflex)|
|Fork guard / brake line mounts:||aluminium (Touratech)|
|Front & rear body work:||plastic parts (Touratech / TT-3D)|
|Rear light:||European BMW R nineT kit|
|Headlight:||BMW G 450 X kit|
|Turn Signals:||LED from BMW R 1200 GS|
|Enduro exhaust system:||titanium and carbon fiber, custom-made by Akrapovič|
|Rear silencer bracket:||aluminum (Touratech)|
|Battery:||lithium-ion 12 V, 4.6 Ah|
|Rear fairing:||carbon fiber reinforced plastic (Touratech / TT-3D)|
|Wheels:||rugged Haan Excel rims (custom-made) with Metzler Karoo 3 tires; front: 21 x 2.15 with 90/90 R21, rear: 17 x 4.24 with 150/70 R17.|
|Skid plate:||carbon fiber reinforced plastic (Touratech / TT-3D)|
|High fender:||carbon fiber reinforced plastic (Touratech / TT-3D)|
|Suspension:||Custom Long-travel, 7.8” (200mm) Extreme shock custom-made by Touratech Suspension|
|Forks:||Original BMW F 800 GS Adventure fork with Long-Travel 9.1” (230mm) Fork Cartridge Conversion Kit by Touratech Suspension|
|Foot peg assembly:||titanium foot pegs, aluminum bracket and heel guard|