Here is a question: When you measure the outer pitch (the very outside diameter) of a French threaded hub with a caliper what is that diameter suppose to be and give the tolerances if you know them? On the same token when measuring the inside diameter of the freewheel with a caliper what is that suppose to be on a french threaded hub. Oh...while we are at it how about the rest of the "standards" as well. If you tell me to reference Sheldon Brown, I have....thousands of times but it seems as though he is giving the minor pitch diameters and that is not the readings that I am going to get when measuring with a caliper that I purchased from the man in a trench coat on the corner....and you thought all they sold were watches. The other thing that you may want to share is what is an inexpensive way to read the threads per inch...is there a cheap gauge out there somewhere or do I need to go back to the corner? Seeya
Jim Abt
Wausau, Wi. USA