What does DF stand for?

[bentstrider]

I know it's in someway related to upright bikes, but what does it mean?

[d2create]

Diamond Frame

[cooker]

Diamond Frame

ie. standard upright bicycle frame, with a main triangle and rear triangle, forming a diamond shape. As opposed to a recumbent or other non standard frames.

[bentstrider]

I never had even thought about it like that.
It sits right next to me in the semi all the time.
Right in front of my face.
Cool, people.

[JanMM]

DF= "safety bicycle"

[kalgrm]

Eventually, DF = pain. ;)

[sch]

For me the safety bike is not the DF where your head is 3-5" higher than when
you are standing up and the possibility of a catapult over the bars is ever present
but my LWB bent with a seat height of 15" and no possibility at all of a catapult.

[JanMM]

Of course, "safety bike" is an historical term. Compared to the high-wheeled "ordinary bikes", the DF's that replaced them were much safer.

[gew0419]

It also stands for those who are still riding the up-rights. (You can make up your own jokes)

[STEEKER]

DF = Don't Forget ---------------> the pain