If you’re obsessed with awesome wheels then you’ve noticed that spokes play an important role in their function and beauty. A big part of our love of the Morizumi Spoke Machine is its wonderful threading.
One of the machine’s dedicated users sent a couple shots of fresh threads. Notice the uniformity. Few spoke factories maintain their equipment to product such fine threads.
Notice in these views not only excellent and consistent threads. You can also see an important feature: the thread root (the valley between peaks) has a generous radius, not a sharp, V-shaped valley. A valley as sharp as one of the peaks would produce a stress riser. In spokes, threads are subjected to endless load cycles that take advantage of stress risers. That’s why so many spokes break at the thread.
A perfect (and beautiful) spoke thread has a stress reducing valley. Morizumi makes just such wonderful threads and we were sure you wanted to see them.