My old mtb bike needs a total overhaul and I got to thinking about some modifications to it that would be more suited for the use it's been getting.
I thought about replacing the stock 7-speed rear hub with an internally geared hub. This, to accomodate the new and beginning riders (such as my girlfriend) who've been using it who find proper shifting a real challenge. There's been times I wished I'd had a way to shift while stopped on that bike myself.
I haven't had a bike with internal gears since I was a child. What happens whe you need to change a flat? How difficult is it to detatch the wheel with such a gearing system? Easier?
Are these things a bad idea?