How much does it weigh?
1 @ 1.5 l = 51 oz
3 @ 24 oz = 72 oz
1 @ 22 oz = 22 oz (slightly shorter bottle fits under the downtube without rubbing on the front tire)
So 145 oz = 1.13 gal x 8.4 lb/gal = 9.5 lbs.
The nice thing is, you get lighter as you go.
Wow. So I could start out hydrated and take in almost 10 lbs of water and end up dehydrated, which could account for another 5-10 lbs.
That means I could sweat and/or pee 15-20 lbs of water between midnight and 8 am. Probably not, because it won't be that hot. But still. It's possible. That would be so righteous. A custom, commemorative t-shirt would be in order. Just kicking around some ideas:
"I Lost 20 Lbs Before You Even Got Out Of Bed"
"My Sweat Weighs More Than Your Baby"