I have my Trek 600 all duded up with 1993 105, with 7 speed brifters. The wheelset came from a 90's Master TG and is a era correct(to the group) 105 hubs and Sun Mistral rims in Ultra hard dark anodized finish. Now, the Master popped a rear spoke on the first ride after the refurb, and I replaced it with another wheelset I had in the stash. Fast forward a year or so later, and I decided to use the wheelset on the 600. On the first ride longer than 20 miles it popped another spoke. I thought it was just a fluke, and replaced it. Well, on the very next ride after about 8-9 miles in....POP!

I now realize this is the third spoke on this back wheel to break, each in under 20 miles. The hub looks fine, although there is evidence it was in a previous build, with spoke marks going in other directions than the existing ones. I am left wondering if someone tried rebuilding this wheel before, and if they did, was it to try and remedy this very problem I am having? The only spokes to have mfg marks on the hub end, are the ones I've replaced.

So is it bad spoke tension? Inferior spoke quality on the rebuild? This wheel is cursed?

Honestly this is the one single wheel I have ever had this kind of problem with. Have I just been lucky until now? I REALLY want to ride this bike this weekend, but the prospect of replacing 33 spokes after working on bikes all day long has me a little weary. I should just suck it up and do it, right??,,,,BD