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#1
12-23-2015, 12:31 PM
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Any rule of thumb re: reusing spokes?
So my front wheel is pretty much toast as the brake track has been worn quite thin. My wheel is a Kinlin XR-300 laced to a White Industry H2 using 24 x 274 cm Sapim CX-Ray spokes, and as luck would have it, the rim i'm interested in (Kinlin 31W) will use spokes of the same length. My wheel has probably 25-30k miles on them, and my question is if the spokes could be used?
Also, is there a rule of thumb when it comes to reusing spokes? Thanks! 
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#2
12-23-2015, 12:40 PM
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If you are just doing a re-rim then go for it. The spokes will be fine. If the nipples are alloy then you may want to replace them. As for rules of thumb, there is not much out there. High millage rear wheel drive side spokes might fall in the 'replace' category. I have a set of wheels that are on their 3rd rim with more than 60000km on them, original spokes.
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Cheers...Daryl Life is too important to be taken seriously Last edited by Black Dog; 12-23-2015 at 12:46 PM.
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#3
12-23-2015, 12:43 PM
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From Roger Musson's book:
"If you intend to reuse the spokes you should try and keep the spokes segregated. The spoke elbows will have taken a particular bend and ideally they need replacing in the hub the same way when building the new wheel. Doing this prevents putting new bends in the elbows which can lead to possible fatigue issues. For a rear wheel there will be four sets: inside (drive), inside (non drive), outside (drive) and outside (non drive). A standard front wheel will have two sets: inside and outside and a disc front wheel four sets. If you get them all mixed up then providing they were good quality spokes it shouldn稚 matter too much, but get into the habit of keeping them separate. The following sections show how to replace a rim or hub using techniques for re using the previous spokes." In another section: "If you are reusing old spokes and placed them in the hub the same way they were removed from the previous hub they will already have the correct alignment and will not require any modifications but it does no harm to check and re align if necessary. Once aligned, the spokes will lose a little tension."
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Last edited by crashnburn; 12-23-2015 at 12:44 PM. Reason: realign
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#4
12-23-2015, 12:55 PM
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Rule of Thumb: Don't.
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Enjoy every sandwich. -W. Zevon
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#5
12-23-2015, 01:00 PM
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i donno about rules of thumb, but i do know that building a wheel is kind of a pain in the ass, and i also know that 30k miles is kind of a lot of miles for a wheel, so if i were going to build a new wheel anyway, i'd probably just spring for some new spokes and KNOW they are good. IMO.
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http://less-than-epic.blogspot.com/
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#6
12-23-2015, 01:02 PM
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Quote:
There is no reason why you should not reuse the spokes of your relatively new wheel. The reason a bike shop would not choose to do this is that they do not know the history of your spokes and do not want to risk their work on unknown materials. If you are satisfied that the spokes are good quality, you should definitely use them for you new wheel. The spokes should, however, not be removed from the hub, because they have all taken a set peculiar to their location, be that inside or outside spokes. The elbows of outside spokes, for instance, have an acute angle while the inside spokes are obtuse. There are a few restrictions to this method, such as that new rim must have the same effective diameter as the old, or the spokes will be the wrong length. The rim should also be the same "handedness" so that the rim holes are offset in the correct direction. This is not a fatal problem, because you can advance the rim one hole so that there is a match. The only problem is that the stem will not fall between parallel spokes as it should for pumping convenience. Take a cotton swab and dab a little oil in each spoke socket of the new rim before you begin. Hold the rims side by side so that the stem holes are aligned and note whether the rim holes are staggered in the same way. If not, line the rim up so they are. Then unscrew one spoke at a time, put a wipe of oil on the threads and engage it in the new rim. When they are all in the new rim you proceed as you would truing any wheel. Details of this are in a good book on building wheels. The reason you can reuse spokes is that their failure mode is fatigue. There is no other way of causing a fatigue failure than to ride many thousand miles (if your wheel is properly built). A crash does not induce fatigue, nor does it even raise tension in spokes unless you get a pedal between them. Unless a spoke has a kink that cannot be straightened by hand, it can be reused. http://sheldonbrown.com/brandt/reusing-spokes.html Good Luck!
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#8
12-23-2015, 01:42 PM
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Quote:
__________________
Cheers...Daryl Life is too important to be taken seriously
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#9
12-23-2015, 01:54 PM
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i guess the difference here is that i'm replacing using a different rim, albeit one that is very similar to what i currently have. I'll mull this over a bit more.
Also it's strange that the XR-300 is listed with an ERD of 577mm, which is less than that of the XR-31T at 580mm. 
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#12
12-23-2015, 02:15 PM
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Quote:
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#13
12-23-2015, 02:18 PM
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I used to swap rims all the time. Transfer one spoke at a time. I can never talk myself into it nowadays.
With 30k miles, those spokes don't owe you anything, swap them out
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#14
12-23-2015, 02:30 PM
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Re rim a wheel, sure.
Anything else, nope
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please don't take anything I say personally, I am an idiot.
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