I don't trust those type of racks that clamp down on the bike,
I have heard of several that have come loose and lost bikes etc.
I learned that the hard way, although the damage to my bike was relatively minor. Still, I replaced my clamp style unit with a 1Up Super Duty Double rack. (Double doo-doo as my 8 year old grand kid would say).
Inasmuch as the design of the 1Up is straightforward I did go around a learning curve of sorts. Thanks to some previous tips here on the forum, I worked out all of my little snags with the 1Up and would now recommend it enthusiastically.
Here are a few pointers I'll pass along to new 1Up rack owners:
A) The optional handle was well worth the extra cost. It makes folding and unfolding much easier.
B) Someone suggested adding a dab of grease to the bar holding teeth. That worked wonders! Prior to that it was real struggle to release and change the rack position at times.
C) Once I move the bar into the desired position I jiggle it a bit to
make sure the bar is inserted all the way. I learned not to assume that even when I hear it click into place.
D) I
always make sure the knob is locked tight before placing the bike on the rack. Conversely, when I remove the bike(s) and fold the rack upright, I immediately
tighten the knob again or road vibration might cause it to fall out of position.
