Originally Posted by
Koyote
I just run the same type that I have in the main triangle… I’m not really sure that the location of the cage matters.
The third cage is typically inverted, beneath the downtube and down toward the bottom bracket. So, the weight of its contents pull downward on the short, unsupported end of the bottle cage. I use the third cage on my tourer for the headlight battery (contained in a bottle DIY-style).