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Student-designed Roskva electric motorcycle launched

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July 25, 2012

Five Norwegian engineering students from the University of Life Sciences in Oslo have desi...

Five Norwegian engineering students from the University of Life Sciences in Oslo have designed and launched an electric motorcycle featuring a lightweight carbon fiber frame and capable of zooming to a top speed of 110 mph

Image Gallery (27 images)

Five Norwegian engineering students from the University of Life Sciences in Oslo have come together to design and build an electric motorcycle that's a little different from the rest of the field. Rather than construct the vehicle around a steel or aluminum frame (like the Brutus we covered last year, for instance), the Roskva bike features a carbon fiber monocoque frame that reportedly weighs less than 25 kg (55 pounds). Carbon fiber is also the material of choice for the wheels, single-sided swingarm and enclosed driveshaft.

The final Roskva design renderings were released in May 2012, after which Erik Olsvik (26), Hans Ola Krog (24), Lars J. Norberg (25), Odd Arne Skjong (team leader - 23) and Espen Kultorp (24) got to work building the first operational prototype. The electric motorcycle was officially launched at Oslo's Aker Brygge earlier this month.

During the formative stages of the development process, the team was considering maximizing aerodynamics by enclosing the whole of the front of the motorcycle (including the front wheel) inside a bullet-shaped fairing, but this looks to have now been abandoned in favor of a more minimal design with a beak-like, pointed affair.

The chassis after being picked up from the paint shop

Within the lightweight frame, which has been strengthened to take the weight of the whole motorcycle, sit 414 individual lithium iron phosphate cells in series for a total capacity of 6 kWh. The batteries power two Lynch D135RAGS electric motors from the LEM200 series that deliver 80 Nm (59 ft lbs) of torque and peak power of 96.6 horsepower.

An onboard Kelly controller on each of the two motors can handle a voltage of 120 volts and 600 amps at peak. All of which is claimed to give the bike a top speed of 180 km/h (110 mph), a range of 100 km (62 miles) and a zero to 60 mph (96.5 km/h) time of just three to four seconds.

Elsewhere, the Roskva electric motorcycle features a telescopic front fork with 120 mm (4.7 inches) of travel, Krarm integrated rear suspension, regenerative rear braking and dual disc brakes at the front.

The launch of the Roskva electric motorcycle

The immediate future will see the team testing and tweaking the prototype Roskva in the steady move toward commercial availability.

"We will not be able (or willing) to sell any bikes before additional tests and revisions have been performed," Skjong told us. "It will also require additional safety testing. The prototype is not road legal, but it has been constructed with current and future regulations in mind."

Source: Roskva Electric

About the Author
Paul Ridden While Paul is loath to reveal his age, he will admit to cutting his IT teeth on a TRS-80 (although he won't say which version). An obsessive fascination with computer technology blossomed from hobby into career before the desire for sunnier climes saw him wave a fond farewell to his native Blighty in favor of Bordeaux, France. He's now a dedicated newshound pursuing the latest bleeding edge tech for Gizmag.   All articles by Paul Ridden
2 Comments

Problem with carbon fibre is that it tends to shatter into sharp pieces on impact- the last thing you want in the event of a motorbike crash.

In my opinion, carbon fibre is therefore unsuitable for exterior parts of road going vehicles- it is very dangerous for anyone to be around (especially innocent bystanders) in the event of an accident.

bergamot69
26th July, 2012 @ 12:09 pm PDT

If it is a composite consisting of a bonded core material (I think some sort of foam from the photo gallery) surely shatter is not an issue (except maybe the BST rims given the way they are made)?

brp675
29th September, 2012 @ 08:45 pm PDT
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