Tribars on a tandem are a pretty impressive aero upgrade but
do require a bit of practice in changeover from brifter to tribar
and back again as shifting can be problematic on up and down
courses. On long fairly level stretches they can can make a
real difference in speed and on a downhill can give you 3-4mph
bump to above 40 on a hill where a singlet would coast at 32-34.