This is just freaking cool...Quote from site:

"Some guys come up with really interesting engine modifications and Bart Crauwels is one of those guys. Bart is currently working on a project that converts a Ducati 1000 DS, a 2 valve air cooled twin, into a supercharged single, using the rear cylinder as the blower. The 498cc single has 15 HP more than the original twin putting out 102 HP at the rear wheel, torque is increased and it runs fine to 10,000 rpm, 2500 rpm over stock. It's about 30 HP more than the well known Ducati Supermono. The Ducati V-One, as he calls it, is for racetrack use only and when things get sorted out he plans to build 40 of them for customers.

In recent years there have been some custom builders, Roger Goldammer omes to mind, who have replaced the rear cylinder on a V-Twin with a supercharger. Since the cylinder is already an air pump, Bart just used what was already there. Of course, the first question before doing this is whether the blown single will have more power than the twin it's derived from and the answer, in this case, is yes.

Another cool feature is the air tank under the seat, limited to 40 bars, which is good for a 10 second burst of compressed air when acceleration begins after which the blower's output kicks in. On deceleration, the tank is recharged. It's hard to see everything that Bart has done by looking at the photos, I notice an intercooler in the plumbing, too, but overall, I like this a lot."

http://thekneeslider.com/archives/2009/01/12/ducati-v-one-twin-to-supercharged-single-conversion/

To sum things up, the entire airbox has a constant pressure.

That is fantastic! I love the bike and as for the builder...... Sheer genius

Big two-stroke diesels on ships used to work like this except their "scavenge" piston was larger and ran at more than engine speed. I wonder if the Ducati uses a larger 1200 piston for the scavenging.

I wonder if the combustion piston had to be reinforced with welds under the deck. 100 hp from one cylinder is pretty sick.

some of the comments are interesting as well if you guys didn't read them.

ok now to figure out how to harness my crankcase pressure.

If you look at the previous link provided, the crank is also off center...So guess the much touted offset crank of the CBR 250 wasn't a breakthrough by Honda afterall !