My Transition Sentinel has a drain hole in the BB. It is possible for water to accumulate there still, so after a wash (we don't know what rain is here in California), I pop the bike up onto the back wheel and give it a few bounces. That helps get the water down to the BB to drain out, and drains it out of the chainstays.
Sept. 16, 2019, 6:32 a.m. - Andeh
My Transition Sentinel has a drain hole in the BB. It is possible for water to accumulate there still, so after a wash (we don't know what rain is here in California), I pop the bike up onto the back wheel and give it a few bounces. That helps get the water down to the BB to drain out, and drains it out of the chainstays.