3D printing a set of hubs (or what ever I think of)

that is genius. I think that could make you a few quid

this might go on kickstarter. how much do you think people would pay for it?

Oh no. It would only work if mounted sideways as there's not enough space to move a bottle between clamp an rear tyre.

with this design, the bottle is horizontal, then you pull it downwards towards the tyre. for me thats no issue because my frames weird. if i took it to production i would probably make a few tweaks to make sure it universally works :)

edit: when its made ill get a video :)