Originally Posted by
The Human Car
I am a one bike kind of guy (though I do have a vintage bike project in my basement) as almost everything I do ends up being a form of randonneuring or touring. My target range for gear inches is 30-130. NoRacer the external bottom bracket comment was helpful.
Just looked at Sheldon Brown's Gear Inch Calculator. Wow! 30-130 is a tall order.
Here's what I got, using 54 x 42 chain rings:
Code:
............Chain rings
Cog.... 54t............42t
11t...132.5..........103.1
36t....40.5...........31.5
So, you'd need 11x36 in the rear and 54x42 in the front to get that range of gear inches.