Originally Posted by
hobbitman
As for the headset, genuinebicycleproducts.com sells a headset that lets you install a 1 1/8 threadless fork. This sells for about 50 bucks. Its essentially a 10 dollar headset that's been turned in a lathe to fit your headtube, but if you don't have a buddy thats a machinist its your only option short of installing the original headset and fork.
to OP.. I just recently converted a 79 Schwinn Le Tour IV. Mine didn't have an American type BB.. but I believe you had to use one of these to do the conversion
SBS Bottom Bracket Conversion from American to Euro Adapter | eBay
to hobbitman.. for me was easier to use a 1 1/8 quill adapter then put on the stem I wanted.
http://www.amazon.com/gp/product/B00...=sr_1_2&sr=8-2
since I can't post pics yet.. link to my bike.
https://goo.gl/photos/RJA1fv7kUv1U9chd9