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The Kawasaki J Concept isn’t the first example of a leaning mutli-wheel vehicles that you ride upon, as I’m sure you have all seen the similarly themed Yamaha Tesseract by now. Neither a motorcycle, nor a quad…we would even be reluctant to call the Kawasaki J Concept a trike, as the riding experience is complete different from other three-wheelers (technically it has four wheels, though the two rear tires act as one).

As such the J Concept and Tesseract exist in a class all to themselves, and that is probably the point of these concept machines: to explore new forms of vehicle recreation and transportation.

The design as it looks now, doesn’t seem too practical, but the idea of a completely adjustable riding position sounds like a concept with some merit — a sport machine for when you want to go fast, an upright sitting position for when you want to cruise. Hmm…

Sometimes we like our concept motorcycles to be funky, and the Kawasaki J Concept certainly delivers in that department. Debuting at the Tokyo Motor Show a vision on what the future of motorcycling could become, the Kawasaki J is an electric trike/quad with a variable riding position/chassis configuration.

Not too dissimilar from the Yamaha Tesseract, the J Concept is an interesting exercise in design and technology proposals, and could be the future of leaning-trikes and similar vehicles. What are your thoughts?

Yamaha Motor Co. recently had its investors meeting, and the Japanese company left a curious item for its second-to-last slide in the presentation: a leaning multi-wheeler. Unfortunately, the proposed machine doesn’t appear to be a production version of the Tesseract concept (shown above), but instead a new sporty three-wheeled scooter, to take on bikes like the unfortunately named Piaggio MP3.

Expected for the 2014 model year, we should see the Yamaha’s Leaning Multi-Wheeler (LMW) at the EICMA and Tokyo Motor Show later this year. No word yet on what will be beneath the fairings, but it is expected that the leaning trike will around 300cc to 400cc in displacement, and go head-to-head with the MP3 on price (insert 99¢ download joke here).

Here at Asphalt & Rubber, we love the work of French designer Nicolas Petit — his Honda VTR1200 concept remains one of out all-time favorite concepts, and spurred me to think long and hard about the potential that the Japanese manufacturers could have in the two-wheel industry. Today’s post though, isn’t about a two-wheeler…it’s about a three-wheeler.

Pretty much the coolest trike we have ever seen imagined, Petit has once again inked a design for consumption, which features Bavaria’s favorite brand: BMW. Taking the 1.6L six-cylinder engine from the BMW K1600GT/GTL, Petit has mated a very recognizable front-end to his creation. The ultimate driving machine? We wouldn’t mind taking one for a spin around our local track.

We’ve covered the Lazareth Wazuma before, in its E85 drinking BMW V12 semi-bio-friendly form. Of course when you’ve already built a 500hp supercharged slede that makes mothers lock up their daughters, there isn’t much stopping you from pushing the limits even further, as is the case with Lazareth’s latest iteration of the Wazuma platform. Now powered by a Ferrari V8 motor, the Lazareth Wazuma V8F boasts other fun items like its BMW M3 gearbox, with push-to-shift controls embedded into the four-wheeler’s handlebars.

Despite its four wheels, the Lazareth Wazuma V8F is more like a trike than a quad, and has been made so the rear-wheels are close together like road-going trike, and make one virtual über-wheel-of-death that has a contact patch larger than the hole Richard Nixon left in the American psyche after he stepped down from office. Catering to the “I’m not a crook” crowd, Lazareth has posted this monster of a machine on JamesList, the Craigslist of the 1%, and is asking for a mere €200,000 in exchange for ownership of the French-made machine.

Harley-Davidson has issued a massive recall with the National Highway Safety Administration (NHTSA) all because of a faulty rear brake light switch. Affecting 250,757 units in all, the recall is for certain 2009-2012 Harley Davidson Touring, CVO Touring, and Trike motorcycles (full list after the jump). Because of excessive heat caused by the exhaust system, the rear brake light switch on these motorcycles might not activate when the brakes are engaged, or conversely may activate when no braking is occurring.

Harley-Davidson is also disclosing that the issue may cause brake fluid to leak at the brake light switch, which could affect the rear brake’s performance. With both issues apt to cause an accident, all 250,757 bikes are being recalled. The recall is expected to start October 31, 2011, and Harley-Davidson will contact affected owners and replace the brake light switch free of charge. Concerned Harley owners can contact the Milwaukee company at 1-414-343-4056, and as always the NHTSA is available at 1-888-327-4236 & safercar.gov.

Well maybe it’s not strictly a motorcycle, but Alexei Mikhailov’s Trakrok concept certainly look like a lot of fun. Part quad, part snowmobile, part dirt bike, we imagine the Trakrok would be able to get us into all sorts of trouble on some of the more impassable terrain available. Featuring futuristic off-road tires up front, the real thing that catches our eye with the Trakrok is the rubber snowmobile-like independent track that replaces the rear tires.

Complimenting the angular modern design, is the idea that the Trakrok would be powered by a hydrogen power cell. A bit out there on the practical meter, we do like the design elements that Mikhailov is using here, and the Trakrok looks like something straight out of the KTM playbook (or would that be the Kiska playbook?). Angel eye headlights set-off the front, while trellis framing abounds on the frame and track supports. It might be a bit hard to find tires for the thing though. More photos after the jump.

Bombardier has been busy over the past two years, presumably working on something new for the Can-Am Spyder. While not exactly a new idea, the Canadian company has devised a control system for a leaning vehicle…a three-wheeled vehicle shaped like a Spyder according to the patent application that was filed in in July 2009, and published this January (yes, it really takes the USPTO that long just to publish an application, let alone grant a patent). While the technical drawings have little bearing on the final product, it would at least seem logical to conclude that we can expect a leaning Can-Am Spyder in the near future.

For now this technology is just in the application process, and Bombardier hasn’t received a patent from the US Patent and Trademark Office yet. Likely unable to get past the prior art for other leaning trike designs as a whole, Bombardier’s patent focuses on the linkage for the steering mechanism, and how to overcome some of the deficiencies in current designs. Diving into the claims of the patent, Bombardier actually has a pretty clever way of having the Spyder’s frame lean and not lean under the right circumstances, which should make for a more refined three-wheeled leaning chassis.

Nicolas Petit, a 25 year old Frenchman who lives just outside of Paris, is a motorcycle mechanic by day, and motorcycle sketcher by night. With already an impressive resume of motorcycle design sketches and renders to his name, we think Nicolas can add one more stunning example to the list: the Ducati Desmosedici RR Trike concept. We’re not huge fans of trikes here at A&R, but when you base your concept off one of the most powerful streetbikes ever created, it certainly catches our attention. Photos and more after the jump.