Originally Posted by
katcorot
Was the parking garage ramp the slippery polished concrete, cause that I could see you breaking traction once momentum was lost. Else you need take faster run at it or lower your gearing some more.
Edit: Those boxes look like they have been reused one too many times.
I didn't lose traction, just came to a stop. Lower gearing might help but I think I'm just not strong enough to lift 600+ pounds (including my weight) up a ramp that steep. I can only put 190lbs onto the pedals, maybe a little more if I pull up on the bars.