Sidmouth Posted January 10, 2017 Posted January 10, 2017 Bought a Dark Horse Wheel-set on the 20 Oct , On three separate rides I have broken 3 spokes,the LBS broke a 4th while repairing one job.The pain of trying to nurse the bike home, then the mission of taking it back to get the spoke fixed, is taking its toll, never mind the mindset that you are going to go out and do a 100KM ride with a problematic wheel and the hope that your are in a UBER zone.Some have told me this never happens, others have said it is a common problem, anyone out their with experience
Pure Savage Posted January 10, 2017 Posted January 10, 2017 Bought a Dark Horse Wheel-set on the 20 Oct , On three separate rides I have broken 3 spokes,the LBS broke a 4th while repairing one job.The pain of trying to nurse the bike home, then the mission of taking it back to get the spoke fixed, is taking its toll, never mind the mindset that you are going to go out and do a 100KM ride with a problematic wheel and the hope that your are in a UBER zone.Some have told me this never happens, others have said it is a common problem, anyone out their with experienceRoad or MTB? We have 3 sets of DH, never had an issue with spokes. 35mm
shaper Posted January 10, 2017 Posted January 10, 2017 Have the 38mm DH, never had an issue and over 9000kms on them. There was a thread a while back where there was someone asking about flex and maybe issues with spokes (if i remember correctly). Outcome of that was DH asked them to get in touch directly so that they will rectify the problem.
David Marshall Posted January 10, 2017 Posted January 10, 2017 Yup. All the spokes - at least on the side that they are breaking, if it is limited to one side - will have to be replaced. I beef them up by adding a cross/lace to the radial sides. On the positive they are usually J bend hubs so you can do this without a hassle.
Underachiever Posted January 10, 2017 Posted January 10, 2017 I have the 50mm clinchers - 5000 km. No issues at all. Weigh between 75 and 80 kg!!
Wil6 Posted January 10, 2017 Posted January 10, 2017 Bought a Dark Horse Wheel-set on the 20 Oct , On three separate rides I have broken 3 spokes,the LBS broke a 4th while repairing one job.The pain of trying to nurse the bike home, then the mission of taking it back to get the spoke fixed, is taking its toll, never mind the mindset that you are going to go out and do a 100KM ride with a problematic wheel and the hope that your are in a UBER zone.Some have told me this never happens, others have said it is a common problem, anyone out their with experienceHave you contacted them?
Sidmouth Posted January 10, 2017 Author Posted January 10, 2017 Davidyes, all the spoke are breaking on the rear wheel non drive side? was that your problem.I am 94KG so heavy but still within the recommended weight limit.I emailed them this morning, no reply yet, but there rep has always brought in a spoke on every occasion i broke one
miniThor Posted January 10, 2017 Posted January 10, 2017 I broke a rear wheel spoke (hit a railway line hard) on my DH 50mm clinchers, got it replaced, but then broke 2 more spokes on that wheel - and as I only use them for races, I was a bit bleak.I chatted to the DarkHorse people, who recommended getting the wheel rebuilt - they said that the stiffness of the rim and the low spoke count means that when you bash the wheel hard enough to break one spoke, the rest take quite a knock too, and are weakened.I got it rebuilt with new spokes and it has behaved perfectly since then.[84kg if anyone cares]
David Marshall Posted January 11, 2017 Posted January 11, 2017 Davidyes, all the spoke are breaking on the rear wheel non drive side? was that your problem.I am 94KG so heavy but still within the recommended weight limit.I emailed them this morning, no reply yet, but there rep has always brought in a spoke on every occasion i broke oneI don't own a set - just repair them. The spokes break from fatigue and they fatigue because of movement caused by the dynamic loads placed on the wheel. The non drive spokes are not as highly tensioned as on the drive so they move more and generally fatigue faster. This is compounded by having the non drive side laced radially and having such a lightweight hub. The torsional stress from the crank action is not distributed as well across the hub as would be the case with a larger hub (compare to an Ultegra hub which also has one side radially laced). My solution is to use longer spokes and cross them as many times as possible. Unfortunately this is usually only two crosses on most of the lighter wheels. The number of spoke holes on the rim divided by 9 will give you the number of crosses possible. It is a classic weight/strength compromise. While some owners will have a "bombproof" set I see enough them in my workshop to make me keep suitable spokes in stock.
Sidmouth Posted January 11, 2017 Author Posted January 11, 2017 Awesome David, you know what you are talking about, I will bear this in mind, next re-spoke that is the way to go
Lakeside Posted December 31, 2017 Posted December 31, 2017 I have had the exact same problem. I haven't had the wheels for very long. I was riding on a very good road at the time and snapped a spoke on the cluster side. Very shortly after that another spoke broke on the opposite side. I weigh in the region of 90 kgs . I will not be happy with them just replacing the broken spokes. I want it re-built with stronger spokes. It's not a good feeling having to finish a long ride with broken spokes. I felt that the wheel could collapse at ant time.
David Marshall Posted December 31, 2017 Posted December 31, 2017 Sorry to hear of your problem. The strength of the spoke is not the issue - it is the the design of the wheel. With a 90kg rider there is just too much flex in the whole set up. You are limited by the number of spoke holes so the only thing to do (as pointed out above) is to fit as many spoke crosses as possible. Stay with bladed or double butted spokes.
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