In order to stop the fighting between my daughters, I will have to upgrade from my beloved Cannondale MT2000 (aluminum frame, suspension fork, 26" wheels, front disc brake, kiddie crank) to a triplet. A not so local dealer has a 10 year old Santana Cabrio steel triplet in store (500km on the clock) which he is willing to part with at 30% under current list price. I test drove it (unfortunately not with my wife) and I am not totally convinced - too twitchy and seemed to flex much more than my tandem.
Is this an issue with the Santana geometry, with the setup (drop handlebars), with steel vs aluminum, my stoker for the test drive, or just that's how triplets are?
Is there anyone with experience how Co-Motion triplets compare?