No way you are walking 400 lbs up a 16% grade. Those Chinese would fail miserably. It maybe possible to ride loads like this up steep grades with the gearing described, but no way you will walk it, forget about it.
Brakes aren't really important for climbing, by the way.
No, I never did try to haul anywhere near that weight up a hill, you are crazy.
Last edited by qmsdc15; 12-17-09 at 11:57 PM.