My first venture into forums so thanks for reading! I've an old Peugeot steel framed 12 speed bike - the shifters are on the down tube - it also has an old maillard hub/cassette (which I think will need to go alas).
I want to upgrade this to an 8 speed with STIs, preferrably Campy but not that bothered (there's other campy stuff on the bike). I've read that this can be done using a 'hyperglide' hub so that the frame does not need to be 'sprung' but in reality I really don't know where to start. Does anyone have any ideas please? I need to keep the cost fairly low!