....a WATERBOTTLE ON THE DOWNTUBE. 7.5 seconds faster in 10km. 30 seconds faster in 40km or approx. 75g less drag thanks to simply putting a standard waterbottle in its usual place onthe downtube bottle cage.
*On the average bike trip that most of us daily cyclists do (2-5km) to go to n from work...that 3 seconds faster on every trip! That can be the difference between catching the bus/subway and missing it. And yes, I am living proof of that.*
So, GET yer DOWNtube bottle on folks! It'll make you faster!
Unless you have a wicked new CYCPRO or equivalent Softride, Zipp or Lotus bike in which case you'd have the fastest bike on the market regardless ofthe downtube bottle.
My source: John Cobb and his test results from the Texas A&M wind tunnel:
The quick numbers results:
|base bike, no bottles|
|down tube bottle only|
|seat tube bottle only|
|bottles on both tubes|
|Profile bottle only|
|Hydropac w/40oz. only|
|Never Reach only|
|behind-seat low bottles|
|behind-seat high bottles|