Originally Posted by
oldride
With backpacking the base starting weight is 20-25% of body weight. Many ultralight backpackers go with less while others exceed 25% of body weight. It' just a starting point. Although not exactly the same there are many parallels between backpacking and bike touring.
I came up with the core of my gear list from several UL hiking websites and forums. Then I just added the cycling specific stuff like tools and spares. As an example of something that saves weight but gets me 90% of the utility I don't carry a folding spare tyre, I carry tyre boots that I can use to patch splits until I get to the next store.