The spokes on my rear wheel keep breaking (three so far in two weeks). Every time I replaced a spoke, the truing was OK, but it just did not stop spokes from breaking. Could there be something wrong that I did not see?
Are they high quality spokes... like DT or Sapim stainless? If so, then I suppose they were not stress relieved after tensioning. Spokes that are in the act of being deformed at the elbow and threads, are at yield stress at which fatigue life is short. Tensioning only guarantees that they remain at yield stress.
Your bicycle shop ought to have "the Bicycle Wheel" in their shop or on the book shelf. How to stress relieve is described in that book. Do it!
Quoted message said:
The current drive train is seven-speed. I was thinking of putting in place a wheel with a six-speed cassette. I suppose there will be fewer broken spokes. Will the six- speed cassette work with the seven-speed chain and rear derailleur?
It will work all except that the inner limit stop screw may not be effective in preventing the derailleur from over shooting the largest sprocket. This can drop the chain into the spokes. That's been my experience with an 8-speed derailleur on 6_speed clusters.
Your bicycle shop ought to have "the Bicycle Wheel" in their shop or on the book shelf. How to stress relieve is described in that book. Do it!
Jobst! You never pass up a chance to plug your book or post old pictures of you at the top of some huge hill in the Alps. I bought the book years ago before I knew you posted here. If I would have known how grouchy you get sometimes I would have thought twice about buying the book. 🙂
Seriously though, it's a good book. I bought both Jobst's book and Gerd Schraner's book and have built many a successful wheelset. Good advice in both books. I've never seen it in a bike shop though. Amazon has it sometimes:
Your bicycle shop ought to have "the Bicycle Wheel" in their shop or on the book shelf. How to stress relieve is described in that book. Do it!
Jobst! You never pass up a chance to plug your book or post old pictures of you at the top of some huge hill in the Alps. I bought the book years ago before I knew you posted here. If I would have known how grouchy you get sometimes I would have thought twice about buying the book. 🙂
Seriously though, it's a good book. I bought both Jobst's book and Gerd Schraner's book and have built many a successful wheelset. Good advice in both books. I've never seen it in a bike shop though. Amazon has it sometimes:
Well when you stop to think about it selling Jobst's book might negatively impact the repair business 🙂 There might well be a copy stashed in the back for the mechanics to use but not at the front. John Kane, Kingston ON Canada
