I've been setting peddle only bikes up like this front chainrings: 22, 36, 48; rear 7 speed freewheel: 34, 28, 24, 21, 18, 15, 13. This is the shifting style: 1(1, 2, 3); 2(3, 4, 5); 3(5, 6, 7). This style of shifting eliminates redundancy, cross chaining and chain droop. I install a bike computer with a cadence function on it. I also install a digital protractor. I've teach them what gear and cadence to use for certain degree accent or descent. Eveyone I've set up bikes for tell me the 9 speed system works great on these steep hills in Tennessee. They can now do on a department store bike what can be done on expensive bike shop bicycle.