Originally Posted by
goatfish
Dimensions:
- head tube - 25.4mm
- seat tube - 25.8mm
- BB shell - 70mm Italian thread
- rear drop out / hub spacing - 125mm
Looking at the head tube in the photo, it's clearly larger in diameter than either the top tube or the down tube. Are you measuring with a caliper? I'm guessing the tubes are standard diameter (31.7 mm HT, 25.4 mm TT, 28.6 mm DT, 28.6 mm ST). I don't think I've ever seen a 25.4 mm head tube.