TG, now that I am looking at those pretty Nimble Fly wheels I am beginning to wonder if they would be strong enough for a tandem team. The regular FLY rims have been tested to and can support a 650 pound static load unlaced. They make a Clydedale rim called the HorseFly, only 340g per rim. I wonder if they can be built with high enough tension to support a 330 pound team + bike weight. I know that they typically build with between 100 and 110 Kgf, as a reference Velocity builds all their wheels to 120 Kgf (I know, I asked them).