Hi
The distance between rear dropout inner faces is 126-127mm.
I do hear you regarding my daft questions, as I said before I had a GT Super Record in the 80's, my first real racing bike. I lost it sometime in the early 90's and have always regretted it. I saw this frame for sale recently on another forum, and was just too good to miss, so now I'm trying to get up to speed again asap.
I've forgotten so much about retro groups & equipment, I'm trying to kickstart the old grey matter back into action.
Regarding my choices of what to put on this, you're right, it sounds very odd, but was something I had to work through, having initially decided that I didn't want to spend too much on this, just enjoy building it and enjoy the missus riding it with me.
FFWD a few days & I am getting down to the nitty gritty, lots of research, & I have been blown away by the choice & levels of equipment that were available in the 70's & 80's, stuff I was never aware of before. I've gone through a lot of different choices for the frame, all weighed up against how practical it would be to ride, not just look at. The wife currently rides a 51-53cm Specialized Elite flat bar version
I'm pretty sure this is a pre 77 frame as the seller was a big bike geek & I don't think he would have sold me a duff.
Cheers