Dura-Ace headset identification...
 

Does anyone know from which year this headset is..? Got it for free a while ago.. If it's from the right era I'd like to use it for my time trials / funny bike build....

Thanks!

http://img.photobucket.com/albums/v1...ce_headset.jpg

HP-7200
According to Velobase '78-'84

Thanks a lot!

I didn't know about that website. That'll come in handy in the future!

Cheers,

-Maurice

Now as for the wrenches that fit it? I added 2 to my tool collection back in 1986 when the Univega I bought for my wife had shimano 600 with that same design.

I believe it is an AX from the early 80's.

For tooling with all my headsets including those 600 or DA ones I always use this tool for tightening the uppernut >>

http://www.knipex.de/fileadmin/site/...860318014k.jpg

No cheapies, but great stuff. The clamping bits always move linear toward eachother. There are no ridges that could damage your nut. When grabbing the nut it will hold it perfectly fixated with it's falts, so damage is less like than with any other tool, including normal headset tools. In fact it is wrench ~0 up to ca 36 in one, with a grabbing function.

Although the official scalloped wrenches grip better and have less chance of marring the soft aluminum nuts, you can use a standard 32mm headset wrench on them if you're careful.