DH and I tried a Trek T900 today at the LBS. It wasn't fun and realized without any communication, trust and balance, it's nearly impossible to ride one. The brakes sucked and turning was nearly impossible. When we crashed the second time with DH landing in the snow the LBS guy gave a us a dirty look and we gave him back the bike.

I think what killed us the most was the size. I think it's a 19 up front and a mere 14 or so behind. There was no way you could do miles on this bike and be comfortable. One of us would be stuck with our face in the other's back and trying not to let your knees hit the handle.

Obviously a 10 minute attempt in the parking lot doesn't give a lot of learning experience but my biggest concern was sizing. Are all the tandems out there sized like this unless you go custom?

For a 1000 dollar bike, it wasn't too bad. Just the sizing was off and it's the only size Trek made for the bike.

DH is 5'8" and I'm 5'10". He's wide with short legs and I'm tall with a short torso. We both generally ride a 17.5.

However; it was nice to not have to yell back at the person behind you or for DH to fell left behind even though he's not.