Delivery Bike

I know. It's not likely possible to do this without some type of clamps, but I'm thinking a fixture that attaches to one tube (downtube only or headtube only) seems more likely to damage the frame than one that utilizes three to distribute force. I don't know. I'm brainstorming.

Okay, here's my contribution. See this guy: http://cleaverbikes.com/

I think if that was heavily loaded could make steering an issue as it would continue in a straight line even when you turn, one advantage of having a rack connect to the forks and bars