Originally Posted by
Amani576
There's no such thing as a completely closed chain guard made for full derailler set up.
I mean, you could always fabricate one, or have one fabricated, but nothing currently exists like that.
-Gene-
Don't be so sure- the Go-One Evolution velomobile:
features a fully-enclosed derailleur system. This is in contrast to the previous Go-One 3:
I do realize that velomobiles are outside the experience of most cyclists... but they do exist!