I recently got a pair of 50mm 23mm Wide Farsports clinchers (480g rim, 430g for 38mm), 20/24 spokes, cheap hubs (257g), steel bearings, 4 front and 4 rear cx-ray spokes that weigh 1360g for the pair.
these visions are 40mm (10mm shallower), 18/21 spokes (5less spokes), 2F/4R ceramic bearings (2 less bearings), and presumably lighter hubs/spokes, so it doesn't seem that unlikely too be sub 1200g claimed, most likely minus any clear coat finish and stickers. Whether they are actually sub 1200g, only time will tell, but it is not a weight I say is impossible, and with enough money could be done right now, before Vision.
Interested to see how these wheels perform when they are released.
(Apologies for derailing, but I'm new here and can't send PMs yet)
Could you please provide a link to the rims you got? There are a few different 50mm clinchers on Farsports' website, but they only list the width (at 20.5mm) for one model. The rest of them don't have the widths specified. Also, how do you like the wider rims? Do they offer as much comfort/ride quality improvement as they do on aluminum rims? Or do the carbon rims themselves dampen the road imperfections?
@airwise - I can see your side of the debate, but for someone who wants aero performance without the hassle of tubulars and with reasonable weight, what else is out there?