Originally Posted by
Dan333SP
For steeper and longer climbs, like 15+ % for 7 or 8 miles, I prefer to get into the "imaginary aero bar" position (IAB) where your forearms balance on the tops, you clasp your hands between your brifters, and I put it in my 53/11 and spin away until I'm at the top. I tend to be ON THE RIVET on my saddle throughout the climb.
Are you sure you spin up a 15 degree incline in 53/11.... That's the highest gear possible and the most difficult to peddle. Where is the RIVET on the saddle