either small front wheels or bars attached below the upper headset bearing. Basically, if it wasn't designed to replicate the drop bar position when using bull horns, it isn't a lo-pro
I haven't changed my view:
There are lots of reasons to have a sloping top tube, or a small front wheel, or bullhorns, but none of them on their own is definitive of a Low Profile, and a lo-pro can be built with equal sized wheels and a horizontal top tube, see Тахион. The only true lo-pro is a bike which replicates the hand position of the bottom of a drop bar by lowering the handlebar clamp enough to switch from drops to a bull horn.
I haven't changed my view:
There are lots of reasons to have a sloping top tube, or a small front wheel, or bullhorns, but none of them on their own is definitive of a Low Profile, and a lo-pro can be built with equal sized wheels and a horizontal top tube, see Тахион. The only true lo-pro is a bike which replicates the hand position of the bottom of a drop bar by lowering the handlebar clamp enough to switch from drops to a bull horn.