Probably one of the lightest, traditional diameter tubesets ever made. I had 980 on my '83 PSV-10 - identical to the catalog photo.
Now, it is also true that it is extremely whippy (at least it was so on my 60cm), but the 980s are also unusually lively. The frame will flex considerably under load, but on the PSV-10, the power transfer feels instant. Perhaps even springlike.
The steep front fork rake of the PSV-10 works against itself at slow speeds, being quite twitchy, but it balances out well once you're up to a fast cruising pace.
The PSV-10 itself is a machine that feels ideal for mostly straight, high-speed settings; mostly uncomfortable or unsuitable for easier riding.
-Kurt
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