Originally Posted by
Cyclist0108
I did this to 2 road bikes with rim brakes this fall and installed 11-42 casettes on rear. Was told by my doctor to watch my heart rate while exercising, so made the switch to help on hill climbs here in Colorado. Wish I had done this a long time ago. One negative for some might be spinning out when descending. When that happens I just coast & enjoy the ride. At 68, I'm not looking to set speed records anyway.