I looked at this longingly, as it's my exact track-size and, in its way, very attractive.
However, I have a little trouble with the price. Not a lot, but a little. I suppose, given Nagasawa's current waiting list, the price is probably reasonable. But, really, when you look closely at it, this is very much a plug 'n' play frame. Cast lugs, not much hand-work. All very nice, but, somehow, not much character there, even though the lugs are likely unique to Nagasawa. While this is anything but a mass-produced item, it has the strange flavor of one, you know?
I've seen a few of these in person, and they are very tidy...even so...somehow..
I'm sure it rides great, and you could win on it, and that's really the most important thing. Although it seems unlikely this particular bike will ever get on a track with a keirin pacer.
Richard Sachs has a couple of hand-worked Nagasawas with hand-filed lugs (pressed? Cast? dunno) that are absolutely stunning. Like old De Rosas, with whom Nagasawa apprenticed, right? Only nicer than any De Rosa you ever saw. Too bad he doesn't make those anymore. although maybe he makes them for selected customers.