I had the opportunity to speak on the phone with John Drummond, owner of UDC, (USA) today. He was friendly and very forthcoming with regard to the “X” airfoil issue, and told me that the problem has been discovered to be mostly likely caused by a defective batch of bad tubes! They have since replaced these with coker tubes, which seems to have solved any suspected Airfoil/TA tire conflict.
Let me also make clear that if I “implied” that UDC had been “less than truthful” in a previous thread, I will retract that here and now. It can get very frustrating when you get conflicting information from one source to the next, so it gets pretty hard to know who to believe, but I do not now, nor did I then believe UDC to be untruthful in any way. At worst I think they may simply have not known about the problem to its full extent, or in all its details. They certainly do NOW, so that’s a good thing, as both John and I agree!
In the past, UDC has always been quick to respond to questions or complaints, and replaced my broken KH Muni rim (remember that bad batch with the “seam” in the rim?) and a broken magura part, a split lift handle…all were replaced free of charge and shipping, quickly and without question. So my experiences with UDC have always been excellent.
As I told John, I like to do my research before I buy an expensive unicycle or whatever, so when I initially came upon various threads saying that the new “x” rims were faulty, it gave me pause. That’s why I called them to inquire, and so when they said they hadn’t heard of the problem, I just became uncertain as to how to make an informed decision, with so many conflicting reports about this rim, and no explanation (until today) of why the problem might or might not exist.
Just so you all know, I am now quite confident in making my purchase from UDC USA, and plan to buy a 36-er with the current airfoil. John also wants to make clear (as he will in his own post) that they will stand behind this rim, and if I experience any problem with it, to contact him directly so that he can take care of the problem.
Our conversation was ended on a friendly, positive note, and I look forward to getting my new 36-er, and I now feel comfortable saying to anyone contemplating whether or not to buy one to go ahead and order one with confidence.
In the end, all I wanted was assurance, (from UDC) and some kind of explanation as to why some people were having problems with this rim, as people were thinking it was either the fault of the rim, or the tire. When John told me about a bad batch of TUBES being the likely culprit, and that they have recently gone back to using ONLY the coker tube, the problem seems to have been solved.
I will post a thread reporting the performance of my new 36-er w/”x” rim after about 2 weeks worth of initial riding. I’m hoping for the best!