Originally Posted by
DoubleDiamonDog
I have ridden Cannondale tandems and for me the ride was too harsh and unpleasant. Could be the aluminum, could be frame geometry or a little of both.
Cannondale's are nearly as famous for being harsh/buzzy as they are for being stiff and a good value.
What I do not know is whether the Cannondales in this regard are representative of aluminum tandem frames, or whether they are less smooth than other aluminum tandem frames (e.g. Co-Motion, Santana).