@Ergott: while you're here I'm hoping I can get your thoughts on this. You said the new WheelsMfg (Alchemy) hubs have a better flange spacing than either Dura-Ace or Record hubs. Let me limit my question to just the Record hubs since that's what I know. Would it be just the non drive side that is wider? I ask because I build record hubs with low profile (i.e., Nemesis) rims using DT Comps 3x both sides, with pulling spokes heads out. All set up with Campy the rear derailleur is very close to the spokes. Standing hard climbs I can hear the slight ping of the derailleur cage grazing the spokes. So, seems that if the DS flange is even wider than the current Record, and the cassette remains in the same place in space, then that situation I describe with the spokes and derailleur cage might become even worse. Does that make sense? Really only a concern with very low profile wheels where the angle of the spokes (flange to rim) is lowest, versus most rims these days are not that shallow. Thoughts?
Like I mentioned above, you get more localized flex with those rims. The fact that the angle brings the spokes closer and the lower lateral stiffness both work against that particular setup. The Alchemy hub is about 1mm wider on the right side so potentially you can have a little more rub than you are already experiencing. If you were to have a 32 spoke Record or Alchemy hub laced to a Hed Belgium tubular which is only marginally taller in profile you would be far less likely to have clearance issues.
Thanks... that pretty much was my thinking as well. 1mm wider flange on the drive side, while retaining the cassette in it's point in space (and where else could it go really), would be too much imo for the setup I just described. Under stress with a heavier rider, the derailleur could potentially have a bit of a run in with the spokes. So, while they may work out fine for taller rims, I would not risk these hubs with a setup as I described, which by the way, is one of my favorites to actually ride on. I have found the Record hubs to be pretty much perfect in every way as long as you want a classic 32 spoke Campy wheel, which I guess few do these days. But the drive side flange spacing with current 11speed groups is pretty much at the limit as it is should you want to use a very low profile rim with it. At least that's what I think.
Oh, I should add that on the wheelset I am getting the occasional grazing "ping", the non drive side spokes are DT Revolutions. Do you think that using DT Comps on the non drive side might help this issue a little bit? I have other wheelsets of the same build with DT Comps both sides so I can test it out for myself for sure at some point. I think if it helps then I'd prefer Comps on both DS and NDS rear, so long as they are all very evenly tensioned (as much as possible), over using DT Revs on the non drive side. I guess in theory the Revs might not go slack as easily under the lower tension of the drive side, but I've found that with proper even tension, I've not had an issue with the Comps in this regard. So, for the sake of a few grams, if it makes the wheel a teensy bit more laterally stiff, that's the way I'm going to go.