first post here. Getting in to road cycling, bought an old Ross 294S steelie with downtube friction shifters. Want to switch to a brifter system. I’ve watched a bunch of vids and googled but can’t find exact info I need.
I’m pretty sure the group set currently is Shimano SIS, the drivetrain is 2x6. So I bought new Shimano Tourney 2x7 brifters, bar tape, cable stops, etc. Then I realize oh man will the 2x7 brifters even be compatible with a 12 speed? I thought I could just have a ghost gear on the 7, but now I’m not too sure and I don’t want to cut cables until I know. Also would the ‘friction’ element of the downtube shifters matter? I think the SIS has capacity for index shifting... I watched a guy on Youtube put 3x7 on a Trek 14 speed and he had a ghost 3.
If any other info needs to be had let me know. Any help appreciated ahead of time. Cheers!