I am currently building up a tandem frame am looking for some info on tandem wheels. More specifcally, when is a wheel fit for use in a tandem? Does it really need lots of spokes, box section rims, high profile rims, high spoke tension, beefy spoke flanges, etc.? Or will some/many non-tandem specific wheels do just fine?
So far I have noticed that quite a few standard road bike wheels are rated up to 110 kg (like my own Campagnolo Zonda wheels). These have taken an enormous amount of abuse so far, including a serious crash and some very rocky trails and are still perfectly true. This got my wondering about the way wheel rating works. Are they actually tested over 110 kg? Or are they just tested up to 110 kg, because hardly anyone is over 110?