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  • Roehr Motorcycles V-Roehr

    V-Roehr Bike

    In 1995, passionate motorcycle enthusiast Walter Roehrich set out to build his dream motorcycle. His criteria was simple – light weight, powerful powerplant and GP-like handling. His first effort, the Rv500 was based on a 500cc two-stroke V-twin from a Yamaha YZ250 motocross bike. This was presented to the media in 2000. In 2004, Roehrich unveiled his Rv1000, a 120hp 936cc 60-degree 4-stroke V-twin.

    Harley-Davidson’s V-Rod, unveiled in 2002 captured Walter Roehrich’s imagination and he set about building his latest dream machine, the V-Roehr. The V-Roehr is powered by a 180hp, 1250cc Harley-Davidson Revolution engine. A supercharger is fitted to increase the Revolutions power output. The price for this limited bike (only 50 units are estimated to be produced in 2008), is US$44,995.

    Roehrich went for a unique chassis. The main structure is what appears to be a chromoly steel ‘deltabox’, with an aluminium subframe connecting the swingarm and foot controls. Roehrich describes his innovative setup as a ‘BiMetal’ composite beam frame. Lots of tasty components fill out the rest of the bike. Marchesini 10-spoke forged aluminium wheels, Ohlins suspension, Brembo radial 4-piston calipers up front, all wrapped in carbon-fibre bodywork which looks as if it was styled in Italy.

    Story by Ben Corley, more photos after the jump.
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  • Proton’s 1.5 liter motorcycle

    Proton LogoDid you read NST yesterday? Saw the weird Proton motorcycle? It’s a chopper-style bike done up in orange and features a 1.5 litre Megavalve engine from the old Proton Wira or Iswara 1.5. This engine is connected to the rear wheel via a single driveshaft with a 90 degree joint coming out of the Wira 5-speed manual gearbox.

    According to NST, The rear wheel is a 17″ Proton car wheel wrapped with 210/50 motorcycle rubber, while the front uses a 21″ motorcycle wheel with 80/90 motorcycle rubber. Even the brakes and calipers are from Proton cars.

    It’s quite a Frankenstein-like piece of madness really, and Proton is planning another prototype with a 1.6 litre Campro engine soon.

    Read the full story here!

     
     
  • BMW HP2 Megamoto now in UK showrooms

    The second product from BMW Motorrad’s ‘High Performance line has hit the showrooms this month in the UK – the BMW HP2 Megamoto. It is designed a street-legal twin-cylinder Supermoto, powered by a tuned version of BMWs iconic Boxer-twin engine, pumping out an impressive 113hp with 115Nm of torque.

    The use of lightweight materials such as carbon fibre gives the BMW HP2 Megamoto a weight of just 179kg, giving the bike an impressive power to weight ratio. A fully adjustable, top of the range Öhlins shock absorber ensures consistently stable rear-end feedback, whilst accurate steering is achieved with sturdy, upside-down 45mm Marzocchi front forks, and what holds it all together is a hand-built trellis frame chassis.

    Tony Jakeman, BMW Motorrads Marketing Manager said, “The Megamoto has been designed and built for those riders who strive to be different and want a top-end, high-quality motorcycle that has class leading performance, that is fast, fun and innovative. The bike typifies BMW Motorrads brand shift to producing an ever more diverse range of premium performance motorcycles that appeal to connoisseur riders.”

    More shots after the jump.
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  • Golf Mk1 with turbocharged Hayabusa engine

    Golf Hayabusa Engine Bay

    Remember the Smartuki? A Smart Fortwo with a Suzuki engine. Here’s a similiar engine in a chassis that looks alot less likely to topple over any moment – the Mk1 Volkswagen Golf! In a chassis that’s been stripped down to weigh 650kgs, the 1.3 litre Hayabusa engine has now been turbocharged to make over 350 horsepower. Not sure if these videos were recorded before or after the forced induction modification. Nevertheless, the engine sounds damn sweet. Three videos after the jump.
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  • MotoGP Technology: The Official Book (Hardcover)

    MotoGP has evolved over the years to become the F1 of the 2 wheeler world. Since it began in 2002, the world has seen the very highest levels of 4-stroke motorcycles. Over 180 pages of content. Niel Spalding has done beautiful work preparing this book, which is filled to the brim with photographs, and covers in-depth aspects of MotoGP Technology, showing the reader how the top MotoGP factory teams compete at the very highest level of 2 wheeler motorsport.

    Spalding writes about the main teams, including new entrant WCM, giving information on the engines and frames used. My only gripe is that MotoGP Technology: The Official Book doesn’t really go in-depth into the engineering side of things, but there are other books for that.

    MotoGP Technology: The Official Book covers the start of the 990cc, 4-strokes to 2006, the last year of the 990cc formula. Much of the book covers developments, team-by-team, and further sections cover components. The ‘teams’ sections provide an in-depth look at each team’s machine development & progress over the years, while the components sections cover specific parts of the bike, like frames, valve technologies, suspension, etc. After reading MotoGP Technology, you will understand how engine rotation affects handling during acceleration/deceleration, and how engine firing pulses, “Big Bang” for example, affect ‘rideability’ and traction.

    Arguably, the author tries to cover a LOT of information such little space, so die-hard fans may have some issues with the book, as things move on there could be more info released which may warrant a 2nd Edition. Nevertheless, Niel Spalding covers the 990cc MotoGP Formula well and MotoGP Technology: The Official Book makes a good buy for all but the most jaded motoring fan!

    Rating: 4/5 Stars
    Contributor: Ben Corley

     
     
  • 2,950kg Monster Bike

    monster-bike-1.jpg

    This monster is the creation of Greg Dunham in California, and it is in the Guinness Book of World Records holding the record for the world’s tallest bike standing at 11 feet, 3 inches tall. Costing US$300,000 to build, the monster bike is powered by an 8.2 litre, 500 horsepower engine mated to a 2-speed transmission. It actually moves, but from the looks of the thing, I have no idea how you’re supposed to steer it.

    More photos after the jump.
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  • Mat Rempit Stunt

    [UPDATED] The first video is a Bonnie and Clyde style of Mat Rempit stunt, with a motorcyclist dude and someone presumably his girlfriend doing stunts together. Looks pretty dangerous, but this seriously looks like it needs ALOT of practice.

    The second video is a solo flight. Watch how he overtakes the car towards the end of the video while still performing his little stunt. I won’t spoil it for you by telling you what he does. Videos are after the jump.
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  • 700 horsepower Hayabusa tips scales in Dynojet Horsepower Challenge

    hayabusa.jpg

    DynoJet manufactures motorcycle dynamometers, or dynos as they’re more commonly known as around these parts. There are a few types of dynos, but the kind that measures power at the wheels are called chassis dynos. Chassis dynos measure horsepower and torque produced when a vehicle’s wheels spin its dyno rollers.

    DynoJet organised the first Dynojet Horsepower Challenge for motorcycles in March this year. Sometime late last year I was contemplating for a short while the purchase of a used Kawasaki ZZR1100 which made 150 horsepower. That never happened. The ZZR1100/ZX11 held the title of fastest production bike for nearly a decade. The idea of 150 horses on something that light was pretty much bordering madness for me, but wait till you hear what the winner of the dyno competition was making. A mind-blowing 701.32 horsepower. Yup, the winning bike, a Suzuki Hayabusa was runing on methanol and had a custom NRL turbocharger bolted on to it’s 1.3 litre engine which made 160 horsepower in stock form at 10,000rpm.

    The owner of the winning Hayabusa also clinched the second place spot with his other Hayabusa which made 606 horsepower at the wheel. From the scoreboard, you can tell that turbocharging a Hayabusa is likely the most popular and effective way to create mega horsepower on a bike. Two other turbocharged Hayabusas made 559.02hp and 445.16hp each.

    Anyway, I’ve put a little video after the jump. It’s a recording of a turbocharged Suzuki Hayabusa. Not the same 700 horsepower monster, but an entertaining watch nevertheless.
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  • KTM tests two-wheel-drive motorcycle

    ktm2wd.jpgFollowing the footsteps of Yamaha with their 2-Trac two wheel drive system for motorcycles, Austrian motorcycle manufacturer KTM has developed it’s own version and has been testing it on a motocross bike.

    KTM says the results are good, allowing the bike to accelerate much harder out of corners due to less slippage. However, it’s harder to take the inside line around a turn due to both wheels being powered, which causes the bike to run wide and straighten up. Kurt Nicholl of KTM says the system would benefit amateur riders more than professionals because pros have gotten used to riding with the back wheel slipping most of the time.

    KTM’s two wheel drive system uses a mechanical/hydraulic system to distribute torque between the front and rear wheels. How exactly does it work? There is a small hydraulic motor inside the front hub, powered by hydraulic fluid pumped through the two tubes running down the fork leg. You can see the tubes in the image in this post. The motor drives the front wheels.

    One of the major problems with this system is weight, it adds 6 kg to the bike, and half of that is directly on the front hub. KTM says reducing the system’s weight to 2 kg will revolutionize bikes the way Audi’s quattro revolutionised car drivetrains.

    Source

    Related Posts:
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Last Updated 14 Sep 2019