Khamsin's are Campagnolo's least-expensive wheelset, sitting at the bottom of lineup that includes (from most to least expensive) Shamal, Eurus, Zonda, Scirocco, Vento, and ... Khamsin. They're based on Campagnolo's "G3" spoking pattern, which arranges the spokes in groups of three--two spokes on one side pulling against one on the other. For the front wheel, there are eight of these pairs, alternating between the sides with two spokes. On the rear, all of the two-spoke pairs are on the drive side and all the single spokes are on the non-drive.
A very smart rocket scientist friend of mine (no kidding ... he works for NASA) once told me that the G3 pattern is bunk. He said there is no engineering reason for the pattern, and that it shouldn't be any stronger or better than a "G2" pattern with one spoke on each side.
That may be true, but the Scirocco wheels we've had for some five or more years, also based on the G3 pattern, have been tried and true (no pun intended) through thousands of miles of riding.
So, let's see how the Khamsins hold up. Check back and see.
Some stats below. The total weight of a Khamsin wheelset is 1,895 grams. That's about 140 grams more than Ventos (about 5 ounces) and a whopping 400 grams (more than 14 ounces) heavier than the top-of-the-line Shamals. But really, how many of us need Shamals for daily riding ... or any riding? And keep in mind that a pair of Khamsins will set you back about $400 (less on eBay and other places), while a pair of Shamals is on the far side of $900. That's right--with the money you save, you can almost buy the new Apple tablet computer when it comes out!
Khamsin front wheel: 855 grams (all weights per www.campagnolo.com)
Khamsin rear wheel: 1040 grams
Vento front: 810 grams
Vento rear: 945 grams
Scirocco front: 770 grams
Scirocco rear: 955 grams
Eurus front: 660 grams
Eurus rear: 890 grams
Shamal Ultra front (clincher): 605 grams
Shamal Ultra rear: 790 grams