Roehr 1250sc, 2011
The Roehr 1250sc is the fastest and most powerful American made production sport bike. The specially developed supercharged version of the HD Revolution engine provides 180hp.
The power, combined with an innovative Bi-metal composite beam frame, top quality cycle parts and sleek european styling, results in a motorcycle that redefines the American performance bike.
Handcrafted, exclusive, fast and beautiful, a true American thoroughbred.
The Features
- - American Performance Motorcycle.
- - Innovative BiMetal composite beam frame
- - Combines power, performance and beauty
- - Specially developed 180HP supercharged version of the Harley Davidson 1250cc
Revolution engine
The Roehr Supercharging System (RSS)
The specially developed Roehr Supercharging System (RSS) provides the 1250sc with class leading power and torque outputs. But, just as important as outright power is the way the power is delivered. RSS provides smooth controllable power responding to the riders commands.
At the heart of RSS lies the patented Rotrex (C15-60) centrifugal supercharger unit. This supercharger provides the highest levels of efficiency and performance in a compact, light weight unit. This unit weights only 6.4 lbs. and is no larger than a typical small car alternator. Combined are a high efficiency, highly developed "Turbo" centrifugal compressor section, mated to a patented planetary roller drive mechanism. This drive mechanism provides an extremely high step-up ratio of 12.7/1 as well as very low noise output, low wear and excellent reliability.
The RSS is designed to provide boost upon rider demand. A special bypass valve is employed to recirculate unneeded air back into the compressor during certain operating ranges such as idle, cruise and deceleration, this effectively disconnects and unloads the supercharger, thus reducing parasitic drag and increasing engine efficiency. In this mode, the engine operates as its stock normally aspirated self.
Under acceleration the bypass valve closes allowing compressor air to pressurize the intake plenum. The Rotrex supercharger delivers air in proportion to its driven speed. As engine speed increases the supercharger air output increases proportionally. This strategy is responsible for the extraordinarily smooth and linear power delivery. Power increases in proportion to engine RPM all the way to redline.
RSS enables efficient engine operation with stock emission output levels. Due to the relatively low boost levels of the RSS and low intake charge temperature increase relative to other supercharger types, an intake charge intercooler is eliminated, contributing to a lighter and more compact system.
RSS Technology = power + control + efficiency
The specialy engineered supercharger places the full potential of the engine in the hands of the rider with near instant response.
The Engine (production version)
The heart and soul of a motorcycle is its engine. It determines the feeling and overall character of a motorcycle. Just as important as outright power is the way that power is delivered and the sound emitted from the exhaust, giving the motorcycle its voice.
The Roehr 1250sc is powered by a 180hp, specially developed version of the Harley-Davidson V-Rod engine. The engine was designed by Harley Davidson in cooperation with Porsche AG. It is loosely based on the Harley-Davidson VR1000 superbike engine. The design goal was to create a new engine that was modern, powerful and reliable providing HD with an engine for the future.
The result was an 1130cc (now available in 1250cc) liquid cooled, DOHC, eight valve, 60 degree, V-Twin engine with a performance like large bore short stroke architecture. This engine was named the "revolution" engine.
The Revolution engine debuted in the 2002 Harley-Davidson V-rod power cruiser and was widely praised for its excellent power, near perfect power delivery and soul stirring exhaust note.
It is only fitting that the Roehr 1250sc would take this great American power plant back to its roots and unleash its racing bloodline in a new American superbike.
Roehr Motorcycles has applied its Roehr Supercharging System (RSS) technology to enhance this engine's power output without changing the character of its power delivery, resulting in a truly thrilling riding experience. The result is the most powerful American production motorcycle engine available.
Precision engineering and tuned for the road or track. Hear it. Feel the power. Everything you dreamed of in a superbike will change.
Roehr Bi-Metal Frame Technology
The Roehr 1250sc features a unique Bi-Metal beam frame. The frame is constructed of 4130 Chrome-Moly steel and 6061 T6 Aluminum. This method allows each material to be used in areas of the frame that their material characteristics are best suited.
A motorcycle frame needs to be strong, stiff and light weight, but also needs to flex just enough under certain conditions. This controlled flex provides essential information, providing the rider with added confidence near the limits of tire grip. Additionally, this flex also adds a level of dampening which is especially beneficial when the motorcycle is leaned over on the edges of the tires. Under these conditions the motorcycle's suspension effectiveness is dramatically reduced due to road forces no longer acting on the suspension at parallel angles.
The Roehr Bi-metal frame provides a level of dampening that allows the tire to better follow road irregularities under these conditions
Through the use of computer assisted finite element analysis, the Bi-metal frame was designed using large section, thin wall, 4130 steel, main chassis beams to provide a stiff yet soft structure that is bonded and bolted to extremely strong, stiff yet light weight billet aluminum swing arm pivot plates.
By combining these materials into one structure, the Roehr Bi-Metal frame provides the ultimate combination of strength, stiffness, controlled flex and light weight. This unique frame technology is a major contributor to the stellar handling characteristics of the Roehr 1250sc.
Strength of structure in a unique frame that ensures maximum stability and control on the track and on the road.
The Engineering
The American Performance Machine.
The Bike:
The power of the Roehr eSuperSport and the eSuperBike is combined with our innovative BiMetal composite beam frame, top quality cycle parts and sleek styling. The result is an inovative electric motorcycle that redefines the American performance bike. Hand crafted, exclusive, fast and beautiful. A true modern American thoroughbred.
Strength of structure in a unique frame design that ensures maximum stability and control on the track and on the road.
Roehr Bi-Metal Frame Technology
The eRoehr Series feature a unique Bi-Metal beam frame. The frame is constructed of 4130 Chrome-Moly steel and 6061 T6 Aluminum. This method allows each material to be used in areas of the frame that their material characteristics are best suited.
A motorcycle frame needs to be strong, stiff and light weight, but also needs to flex just enough under certain conditions. This controlled flex provides essential information, providing the rider with added confidence near the limits of tire grip. Additionally, this flex also adds a level of dampening which is especially beneficial when the motorcycle is leaned over on the edges of the tires. Under these conditions the motorcycle's suspension effectiveness is dramatically reduced due to road forces no longer acting on the suspension at parallel angles.
The Roehr Bi-metal frame provides a level of dampening that allows the tire to better follow road irregularities under these conditions.
Through the use of computer assisted finite element analysis, the Bi-metal frame was designed using large section, thin wall, 4130 steel, main chassis beams to provide a stiff yet soft structure that is bonded and bolted to extremely strong, stiff yet light weight billet aluminum swing arm pivot plates.
By combining these materials into one structure, the Roehr Bi-Metal frame provides the ultimate combination of strength, stiffness, controlled flex and light weight. This unique frame technology is a major contributor to the stellar handling characteristics of the eRoehr series.
International Specifications
MSRP - $39,995 USD
The Roehr Supercharging System (RSS)
The specially developed Roehr Supercharging System (RSS) provides the 1250sc with class leading power and torque outputs. But, just as important as outright power is the way the power is delivered. RSS provides smooth controllable power responding to the riders commands.
At the heart of RSS lies the patented Rotrex (C15-60) centrifugal supercharger unit. This supercharger provides the highest levels of efficiency and performance in a compact, light weight unit. This unit weights only 6.4 lbs. and is no larger than a typical small car alternator. Combined are a high efficiency, highly developed "Turbo" centrifugal compressor section, mated to a patented planetary roller drive mechanism. This drive mechanism provides an extremely high step-up ratio of 12.7/1 as well as very low noise output, low wear and excellent reliability.
The RSS is designed to provide boost upon rider demand. A special bypass valve is employed to recirculate unneeded air back into the compressor during certain operating ranges such as idle, cruise and deceleration, this effectively disconnects and unloads the supercharger, thus reducing parasitic drag and increasing engine efficiency. In this mode, the engine operates as its stock normally aspirated self.
Under acceleration the bypass valve closes allowing compressor air to pressurize the intake plenum. The Rotrex supercharger delivers air in proportion to its driven speed. As engine speed increases the supercharger air output increases proportionally. This strategy is responsible for the extraordinarily smooth and linear power delivery. Power increases in proportion to engine RPM all the way to redline.
RSS enables efficient engine operation with stock emission output levels. Due to the relatively low boost levels of the RSS and low intake charge temperature increase relative to other supercharger types, an intake charge intercooler is eliminated, contributing to a lighter and more compact system.
RSS Technology = power + control + efficiency
The specialy engineered supercharger places the full potential of the engine in the hands of the rider with near instant response.
The Engine (production version)
The heart and soul of a motorcycle is its engine. It determines the feeling and overall character of a motorcycle. Just as important as outright power is the way that power is delivered and the sound emitted from the exhaust, giving the motorcycle its voice.
The Roehr 1250sc is powered by a 180hp, specially developed version of the Harley-Davidson V-Rod engine. The engine was designed by Harley Davidson in cooperation with Porsche AG. It is loosely based on the Harley-Davidson VR1000 superbike engine. The design goal was to create a new engine that was modern, powerful and reliable providing HD with an engine for the future.
The result was an 1130cc (now available in 1250cc) liquid cooled, DOHC, eight valve, 60 degree, V-Twin engine with a performance like large bore short stroke architecture. This engine was named the "revolution" engine.
The Revolution engine debuted in the 2002 Harley-Davidson V-rod power cruiser and was widely praised for its excellent power, near perfect power delivery and soul stirring exhaust note.
It is only fitting that the Roehr 1250sc would take this great American power plant back to its roots and unleash its racing bloodline in a new American superbike.
Roehr Motorcycles has applied its Roehr Supercharging System (RSS) technology to enhance this engine's power output without changing the character of its power delivery, resulting in a truly thrilling riding experience. The result is the most powerful American production motorcycle engine available.
Precision engineering and tuned for the road or track. Hear it. Feel the power. Everything you dreamed of in a superbike will change.
Roehr Bi-Metal Frame Technology
The Roehr 1250sc features a unique Bi-Metal beam frame. The frame is constructed of 4130 Chrome-Moly steel and 6061 T6 Aluminum. This method allows each material to be used in areas of the frame that their material characteristics are best suited.
A motorcycle frame needs to be strong, stiff and light weight, but also needs to flex just enough under certain conditions. This controlled flex provides essential information, providing the rider with added confidence near the limits of tire grip. Additionally, this flex also adds a level of dampening which is especially beneficial when the motorcycle is leaned over on the edges of the tires. Under these conditions the motorcycle's suspension effectiveness is dramatically reduced due to road forces no longer acting on the suspension at parallel angles.
The Roehr Bi-metal frame provides a level of dampening that allows the tire to better follow road irregularities under these conditions
Through the use of computer assisted finite element analysis, the Bi-metal frame was designed using large section, thin wall, 4130 steel, main chassis beams to provide a stiff yet soft structure that is bonded and bolted to extremely strong, stiff yet light weight billet aluminum swing arm pivot plates.
By combining these materials into one structure, the Roehr Bi-Metal frame provides the ultimate combination of strength, stiffness, controlled flex and light weight. This unique frame technology is a major contributor to the stellar handling characteristics of the Roehr 1250sc.
Strength of structure in a unique frame that ensures maximum stability and control on the track and on the road.
The Engineering
The American Performance Machine.
The Bike:
The power of the Roehr eSuperSport and the eSuperBike is combined with our innovative BiMetal composite beam frame, top quality cycle parts and sleek styling. The result is an inovative electric motorcycle that redefines the American performance bike. Hand crafted, exclusive, fast and beautiful. A true modern American thoroughbred.
Strength of structure in a unique frame design that ensures maximum stability and control on the track and on the road.
Roehr Bi-Metal Frame Technology
The eRoehr Series feature a unique Bi-Metal beam frame. The frame is constructed of 4130 Chrome-Moly steel and 6061 T6 Aluminum. This method allows each material to be used in areas of the frame that their material characteristics are best suited.
A motorcycle frame needs to be strong, stiff and light weight, but also needs to flex just enough under certain conditions. This controlled flex provides essential information, providing the rider with added confidence near the limits of tire grip. Additionally, this flex also adds a level of dampening which is especially beneficial when the motorcycle is leaned over on the edges of the tires. Under these conditions the motorcycle's suspension effectiveness is dramatically reduced due to road forces no longer acting on the suspension at parallel angles.
The Roehr Bi-metal frame provides a level of dampening that allows the tire to better follow road irregularities under these conditions.
Through the use of computer assisted finite element analysis, the Bi-metal frame was designed using large section, thin wall, 4130 steel, main chassis beams to provide a stiff yet soft structure that is bonded and bolted to extremely strong, stiff yet light weight billet aluminum swing arm pivot plates.
By combining these materials into one structure, the Roehr Bi-Metal frame provides the ultimate combination of strength, stiffness, controlled flex and light weight. This unique frame technology is a major contributor to the stellar handling characteristics of the eRoehr series.
International Specifications
MSRP - $39,995 USD
- Engine: Liquid cooled, DOHC 60 Deg V-Twin
- Displacement 1250cc
- Bore x Stroke 105mm x 72 mm
- Compression Ratio 11.3 : 1
- HP 180hp @ 9100 RPM
- Torque 115Lb/Ft @7600 RPM
- Transmission 5 - speed
- Clutch Wet multi-plate slipper
- Final Drive 520 O-Ring Chain
- Chassis Type: Steel and aluminum composite beam frame
- Wheelbase 53 Inches (1422mm)
- Rake/Trail 22.5/96mm
- Seat Height 31.5 inches
Suspension:
- Front Ohlins 43mm R&T inverted, fully adjustable
- Rear Ohlins single shock fully adjustable
- Brakes:
- Front 2x 320mm Brembo Disc Radial 4 piston calipers
- Rear Single disc Brembo 2 piston calipe
Wheels/Tires:
- Front MT3.5x17 120/70/ZR17
- Rear MT6.0x17 190/55/ZR17
- Dry Weight: 432 Lbs (196Kg)
- MSRP: $39,995
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