Originally Posted by
TejanoTrackie
I took a second look at my Stronglight headset, and it says "Delta" on the top of the hex nut. I've also had a lot of problems adjusting it as I posted above, however, some others here are saying that it's OK the way I've got it set up (tight in the stand). I suppose since I don't have any steering problems with the bike, maybe it's OK. One thing for sure, it has not worn out after 26 years of use.
The original "Delta" headset was essentially identical to the A9, but with O-ring seals on the cups. The cups were shaped slightly differently (leading to the "Delta" moniker) but in all other respects it was identical to the A9.
I put one on my tandem back in late 1984. It's still going strong today.