I've asked this before, but can't seem to find the response in the archives. What is the code for Normandy Competition hub markings for FW thread? I thought one groove in the hub body between the FW thread and the hub flange meant English thread, no grooves French.
Sutherlands gives this interpretation for the marking on other hubs, but is silent on Normandy.
My usual method of confirming hub thread is to first try a known French thread FW on the hub. If it tightens up after only a couple of turns, the the hub is English. If it threads all the way on by hand, with no tools, then it is a French hub.
But I have a Normandy Competition rear hub with one groove in the body. I tried a SunTour French FW, which is clearly marked with "metric" and the thread dimension. It goes on several turns, although it does tighten up before going on all the way. The hub thread is in good condition with minimal wear. I've never seen a French FW thead this far onto an English hub before. Could I be wrong about the markings? Or were SunTour French FW's a bit "looser" than other brands? The hub is off a 1973 Raleigh Competition, which is more reason to believe it is English thread.
Big Spring, TX