Originally Posted by Dirtdrop
Sometimes I think it's more trouble than it's worth. One millimeter one way or the other and either the crank arm hits it or it interferes with the front derailer. I have to be very careful not to bump it with my shoe. I just have it on there to be different.
That's what I've been thinking looking at the photo... I have a Japanese guard out of two pieces, one mounting onto the downtube and one onto the seat tube. A gap is left in-between for the derailleur. Moving the rear piece, the gap size can be regulated. To preclude staining or getting the leg of my pants caught in the gap, I ran a velcro on top joing the two guard pieces. That is fairly convenient because I can take a peek and do derailleur adjustments with no need to remove the guard.