Originally Posted by
jim_pridx
While I'm perhaps describing this bike as having a good share more of flex than it really has, when compared to our old bike, there's certainly a very noticeable difference, for the old bike was an extremely harsh ride in comparison. Also, I'm not really convinced that a little bit of flex is such a bad thing, for it surely does feel as though it gives the bike a more comfortable ride.
Santana's Bill McCready is conducting studies of tandem flex, as discussed on
this post, and at more length on TG's blog linked down thread.