Our cousins in the UK at Motorcycle news report that the new Honda V-4 bike has a lot more to it that previously thought. There’s apparently a lot of innovation in this new bike.
First up is the variable cylinder use. Instead of running in a V-4 and V-Twin profiles, the engine can also run as a triple. The ECU will select the use of two, three or four cylinders based on engine demand, and throttle input. So, the rider will get smoother transitions between the different cylinder use profiles, which should translate out to a broader range of usable power for the rider.
When in two or three-cylinder mode, instead of the non-working pistons being air springs, they will actually be running in vacuum. So, instead of losing power on the upstroke of the dead cylinder, the empty cylinder will actually serve as a vacuum assist for expanding the active cylinder during its power stroke. So, on net, you get a power increase for the working cylinders.
In addition, the engine, being a V-4, will inherently have the same crossplane effect that Yamaha has used to such rave reviews in its R1 sportbike.
Moving from the engine to the gearbox, the new bike will utilize a double clutch system, similar to the ones used by Porsche. The rider will be able to select three modes: Drive, Manual and Sport.
Drive mode will put the bike in charge of all the shifting. It’s essentially an automatic transmission for the motorcycle, and the emphasis will be on economy, with the ECU doing short-shifting to keep the bike in two- or three-cylinder mode.
Manual mode will put the rider in charge of shifting, but the twin-clutch set up will be used to anticipate the next gear change, so the rider can shift as smoothly and quickly as a race bike with a quickshifter.
Sport mode will once again put the ECU in charge of shifting. But this mode is designed to run to the redline in every gear, giving you peak HP–which is rumored to approach 200HP–and torque as much as possible, and allowing you to concentrate on steering the bike, cranking the throttle, and moving your butt cheeks back and forth to hang off as necessary.
And this new bike is just the beginning. Apparently, Honda has plans to build a whole new series of bikes based on this technology. This first bike will replace the VFR and, apparently, the ST1300/Pan-European. But beyond that, Honda is going to give us lots of biking goodness based on the new V-4 platform.
The only remaining question is whether or not we will see this bike in the 2010 model year or not. If we are, we’ll probably learn about it in the next 60 days. If it performs as Honda expects, then something like like this has the potential to be a game-changer in terms of what a rider should expect from a motorcycle.
I am really interested in taking a look at this bike.
According to the UK’s Motorcycle News web site, the 1200cc V-Tec Honda I mentioned previously looks like the replacement for the ST1300–or the Pan European as they call in The old Country–and maybe the current Interceptor (VFR) as well. MCN has pics and some info, though the full lowdown will be in the print version of the Brit mag.
Full details are in the new issue of MCN, but what do you think of the looks?
Leaked Honda design drawings have shown the bike’s distinctive duck-billed styling, which we’ve made real using CGI.
The colours are our guess – but the look is the real deal. Less controversial than the sports-touring version spied testing recently, it’s still a distinctive-looking beast.
One notes that “the world’s most technologically-advanced bike in the world” (in the dictionary, see “redundant”) still has a manual turnscrew at the back of the bike to adjust the preload. Or as one wag at the STN Forum put it, “That’s Honduh-Speek for ‘The most needlessly complicated valvetrain in the world.’”
Pics of the new bike are below. My initial impressions:
1) Hmm. No tip-over wings. We’ll never hear the end of that from the ST1300 guys.
2) Looks like Honda figured out a way to get rid of that backlogged inventory of GL1800 rear-view mirrors.
3) I have to say that if the bike actually ends up looking like that, then Honda did a fantastic job of ensuring that bags aren’t too closely integrated into the bodywork. The tail looks great with the bags off.