Way back in 1993 when I was building up my Cannondale Hybrid, I was using an XT crank that has 26-36-46 teeth. I found that I often max out on the big rings so I searched and found a Sugino road chainrings of 50t and 40t. Back then, some mtn cranks can use road chainrings. So far, my 26-40-50 teeth set-up has worked fine.