Originally Posted by HillRider

A Google search turned up some interesting facts about this bike. The Facet was Centurion's first aluminum frame and was one of the very first welded 7000-series aluminum bike of any make. It was also only offered in 1986. Here is an old Bike Forums thread discussing it: http://www.bikeforums.net/archive/in.../t-284219.html

Base on it's age, and position in the Centurion lineup I conclude the following from your measurements:

1.Your dropouts are nominally 126 mm and 6/7-speed compatible. To use a 130 mm hub for 8/9/10-speed you would have to force-fit it into the current dropouts. It's not that hard and often done but a bit of a nusance with each wheel change. Since it's an aluminum frame "cold setting" (i.e. permanantly bending) it to 130 mm is not advised.

2. 24tpi and a Japanese bike of that vintage is almost certainly English threaded. I expect your bottom bracket shell is really 68 mm (2.67") wide

3. You need a 1" fork steerer and headset. If you have the OEM fork it is probably threaded and may be either JIS or ISO sized. These are both nominally 1" but slightly different cup and crown race dimensions. A bike shop could measure exactly to tell you which you have. I'm betting it's JIS.

4,5. Road bike caliper brakes come in "short reach" (37-47 mm from the center of the mounting bolt to the center of the rim's brake track) or long reach (47-57 mm). Again, a bike shop could tell you what you need and which length line up with what wheel diameter. Given the bikes position in Centurion's line up, I expect it came with 700c wheels.

BTW, the OEM fork was also aluminum and I'd be a bit leary of using one that old.