Originally Posted by
Marcus_Ti
Well this thread dredge from last month was worth it just to be hard on a guy with a damaged car and bike from using a well-reputed car bike rack.
It's physics. The very design will "work" within pretty narrow parameters. Surface finish (host), expansion/contraction of automotive surfaces, shear and tensional forces exerted on the rack by basically a sail (the bicycle) etc. etc.
A suction cup is optimized on a flat surface, and any curvature will have an effect, as to what degree is conditional. The surface must be non-porous and smooth enough to minimize any pressure equalization. Once it's equalized..........boing! there goes the system. Not only do you have a design that relies on some pretty ideal conditions, you also have to factor in end user error.
No thanks. From experience, I will stick to the classic mechanical means of securing my expensive bicycles.
The marketing sure is slick though!