I have 3 bicycles all with radial front wheels, am keeping an eye on them, no failures yet.........wayne davidson Invers NZ.........
on 25/8/05 7:39 AM, dddd at dddd@pacbell.net wrote:
>
> Luckily, radial lacing was less popular during the on-topic years. I
> consider most radial-laced wheels to be time-bombs, which thankfully often
> fail during storage (I've seen many instances of this).
>
> I absolutely won't ride any wheel with radial lacing that lacks a current,
> purpose-built radial-safe hub with a stress-reducing design. An exception
> would be an older hub with steel flanges.
>
> I haven't yet seen any failed 3X builds, but with uneven tension, the stess
> around the flange holes might be high enough to allow aluminum to fracture
> over time. Aluminum suffers from creep yield and time-dependent tensile
> failure in ways that steel doesn't, making aluminum nipples, flanges or
> spokes potential failure points. Clamps and press-fits using aluminum in
> continuous tension are also suspect, but these areas are typically designed
> for higher dynamic loadings during use, reducing the continuous average
> stress levels from storage, over time.
>
> David Snyder
> Auburn, CA usa
>
> Spontaneous Hub Flange Failure
>
>
>> I had a OMAS front hub flange crack thru 3 spoke holes, X3 spoking, not
>> happen while riding either........wayne davidson Invers NZ.......
>>
>>> Ken Wehrenberg wrote:
>>>
>>> Regarding GPM, I had a wheelset with their Campy-look-alike hubs and
>>> generally liked them until I had some spokes pull off a portion of the
>>> flange. It became a paperweight!
>>> ---------------
>>>
>>> this has happened to me with campy record and c-record front hubs. i
>>> call it spontaneous because it didn't happen while riding. both times
>>> the wheels alone were hanging from ceiling hooks inserted perpendicular
>>> to the ground. the only weight on the wheels was that of the wheels
>>> themselves. in both cases, the spokes were laced radially. (i was
>>> sitting right under the record wheel when it happened - it made a
>>> really LOUD snap sound that scared the hell out of me.) the failure
>>> started at one spoke hole, and over time it tore off the portion of the
>>> flange running along 6 holes, but on side only. in the case of the
>>> c-record hub...ooops, never mind.
>>>
>>> this has never happened to any of my 3-cross wheels, so i attribute the
>>> failures to the radial lacing. has this happened to anybody else?
>>>
>>> ray dobbins
>>> miami florida