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10-23-10, 02:43 PM
I have two hubs I'm working on, both fronts from early to mid 80's japanese road bikes with typical 100mm dropout spacing. the cups in both hubs look to be in excellent condition. the cones on the other hand are pitted, and rather unfortunately one of the axle rods has stripped threads on one end due to over-tightening.
http://rut.org/cycling/images/forum/IMG_0323sm.JPG
top set: from a Sunshine 5345 hub. on this one the QR axle is badly stripped on one end. it's a 9mm 106mm with 26 TPI threads.
bottom set: from a Miche Competition hub. this QR axle is fine, so I would only need to replace the pitted cones. it's a 9mm 108mm with 1M threads. and yeah, i know the cones don't match exactly; I've assumed that's from an earlier cone replacement.
where from might I be able to order compatible replacement cones and/or axles, that I can be fairly sure will work with these hubs and be of reasonable quality? the cone races from both brand hubs look to be the same, so I'm going to make a hazardous guess that these were the most common cones back then and that they should be truly easy to find replacements for. (ha!) if a cone or set doesn't mention that it's for a specific hub, should I assume that the races are of this common standard? was there a common standard (for japanese bikes from this time period at least) even?
I'm sure I have some flexibility in the axle length; anything between 104mm and 110mm should be more than safe.
btw, my estimates for the TPI on both axles may not be correct (although I'm fairly certain about the 1M one), but I do know that they're different because they don't line up to each other and the cones only screw on a few turns before stopping when swapped between them. if I'm able to replace them in sets though, I don't need to worry about the threading of course.
http://rut.org/cycling/images/forum/IMG_0323sm.JPG
top set: from a Sunshine 5345 hub. on this one the QR axle is badly stripped on one end. it's a 9mm 106mm with 26 TPI threads.
bottom set: from a Miche Competition hub. this QR axle is fine, so I would only need to replace the pitted cones. it's a 9mm 108mm with 1M threads. and yeah, i know the cones don't match exactly; I've assumed that's from an earlier cone replacement.
where from might I be able to order compatible replacement cones and/or axles, that I can be fairly sure will work with these hubs and be of reasonable quality? the cone races from both brand hubs look to be the same, so I'm going to make a hazardous guess that these were the most common cones back then and that they should be truly easy to find replacements for. (ha!) if a cone or set doesn't mention that it's for a specific hub, should I assume that the races are of this common standard? was there a common standard (for japanese bikes from this time period at least) even?
I'm sure I have some flexibility in the axle length; anything between 104mm and 110mm should be more than safe.
btw, my estimates for the TPI on both axles may not be correct (although I'm fairly certain about the 1M one), but I do know that they're different because they don't line up to each other and the cones only screw on a few turns before stopping when swapped between them. if I'm able to replace them in sets though, I don't need to worry about the threading of course.