They make them in all different sizes, stainless or aluminum, anodized even I believe. Find a round tank you like with either mounting tabs or tank straps & use the roll bar clamps to hold tank on bike. The also use them on motorcycles but forget what they call them. I cant remember if there bar clamps or fork clamps in motorcycle lingo.
I think my tank looks too small for this bike. It's the tank that came with my kit so I'm assuming it's a 2 liter. If you have a bike with a 3 liter tank can you post a sideview picture? Do you think a 3 liter would look better? I don't want anything too big. Big tanks look dumb on most bikes imo. I live on the third floor and drag my bike up and down. I measure my fuel and bring extra in a bottle before I go. I do not want, nor do I need a huge tank. My concern here is purely aesthetic. Do you agree that a slightly larger tank would look better?
Please post your pics of a build with a 3 liter tank. That would be helpful. Thanks!