Originally Posted by
Road Fan
If you were going to make that change you'd have to see what ratio is between the chainrings, square that and then calculate out your 7 or 8 speed cassette ideal ratios, integerize them and see if it results in any parts you can buy. I suspect the total gear range is going to be inadequate seeing as how we're used to a certain amount of granny push, in the windy midwest.
well, the comment was made without regard to the cassette. I just don't think that using 46T-48T rings would be useful. My current 46T-49T is roughly a 3% change, which is plenty small for me.*
Steve in Peoria
*edit: sorry... a change from the 46 to 49 tooth ring is a 6.5% change. Still pretty small for my non-competitive use.