Curious George wrote:
I won't name the builder, but they can jump in and provide further information should they choose.
If I'm putting two and two together correctly this is one of our wheels? We've had three of these SL23s crack and all were built from the same batch so hopefully it's isolated to that. I stand behind all our wheels and we'll replace the rim and spoke nipples and cover return freight.
I would like to know more about how the wheel was assembled with riders see this problem.
Was grease used in between the nipple and the rim? Oil? Nothing?
What were the methods of stress relieving used?
We've built a few hundred pairs of SL23s so to see 3 failures isn't a worrying statistic, however I sincerely hope that these are isolated cases!! 1 was a 24 hole, 2 were 28h.
We use a form of grease between the nipple and rim. The rims are de-burred. I won't go into stress-relieving but it's a process which has built a few thousand wheels and doesn't cause any problems. Tension is 120kgf when they leave here, and will be a bit lower once the tyre is inflated. We've got the ability to check and calibrate tension meters so I know that tension is accurate and correct.
As I said - hopefully these are just from a batch and I've got no problems with continuing to recommend the SL23 and we'll continue to use them.
New Zealand handbuilt wheels