I ride a shiv with the fuel sealage.. i also have a real bottle cage behind the saddle... Doing vineman in 2 weeks and am considering putting another cage on the seat tube
, which obviously will make the bike slightly less aero..
How much time do you think I will lose by doing that? I'm planning to ride about 22mph for the bike leg.
Lucky for you I was at A2 for 2 hours yesterday on a Shiv Tri.
My baseline was a bottle between the aero bars and a bottle on the seat tube. Taking the bottle off of the seat tube saved me 6/7 watts at 0/-10 yaw.
Removing the bottle from between the aerobars made no difference at 0 yaw and saved 2 more watts at -10 yaw.
These wattages are aero watts at 25mph. Using 30mph would give you an even higher number.
Race Reports, etc
-- Bob's Bikes