Originally Posted by
GeorgeBMac
Thanks, that's good to know.
I haven't been using the old road bike much because I have been ticking to the rails-to-Trails. But my cardiologist tells me I've dogging it -- and the only way I can safely get my heart rate up to where he wants it is to ride on the roads. So I will keep that in mind because I like the bike -- but the down tube shifters and such are a pain. It would be nice to put a 105 group on it. (It still has all the original 20 year old RX-100 components on it now - even the chain!).
Shimano has come out with a new set of 2X7 integrated shifters, ST-A070. Treat yourself to that and some maintenance items and your R500 will be much more user friendly. I feel that 7S and 8S are sweet spots in drivetrain technology.
Brad