I run ENO eccentrics on two of my bikes, very good they are too. But hear this: when I was more skint, I happily ran one of the bikes with a normal track hub and magic gear. Although it had vert drops, they were a bit "baggy" - i.e. they had a little room (1-2mm) for play. With the right gear, there was enough room to acheive tension. I only changed this setup when the wheel failed (for unrelated reasons) and I built I new posh one.
I run ENO eccentrics on two of my bikes, very good they are too. But hear this: when I was more skint, I happily ran one of the bikes with a normal track hub and magic gear. Although it had vert drops, they were a bit "baggy" - i.e. they had a little room (1-2mm) for play. With the right gear, there was enough room to acheive tension. I only changed this setup when the wheel failed (for unrelated reasons) and I built I new posh one.