Flat spokes vs round spokes
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Nope, IDK about everyone else, but my bladed spokes make this "wooshing" sound when I am over 40kmph, does anyone else experience this?
Sorry if I am hijacking the thread
Sorry if I am hijacking the thread
I write the weightweenies blog, hope you like it
Disclosure: I'm sponsored by Velocite, but I do give my honest opinion about them (I'm endorsed to race their bikes, not say nice things about them)
Disclosure: I'm sponsored by Velocite, but I do give my honest opinion about them (I'm endorsed to race their bikes, not say nice things about them)
- Spindoctor
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wooshing is more likely to come from your tyres than the spokes - do 40 Kph would be nice - i'd put up with lots of noises at that speed.
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- Zen Cyclery
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Maybe take a look at a spoke like the Cxrays from Sapim. They have an ovalized blade shape which makes them very aero with respectably high yaw angle tolerances.
this has some info on different spoke types and effect...
http://www.zipp.com/_media/pdfs/technol ... eshape.pdf
there's a slight increase in crosswind effect, but it's no big deal
the benefit of cx-ray vs. round spokes on aerodynamics far outweighs this
not sure about the whoosh, but they can certainly howl depending on yaw angle
http://www.zipp.com/_media/pdfs/technol ... eshape.pdf
there's a slight increase in crosswind effect, but it's no big deal
the benefit of cx-ray vs. round spokes on aerodynamics far outweighs this
not sure about the whoosh, but they can certainly howl depending on yaw angle
- HammerTime2
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Are they any different from DT Aerolites in that regard?Zen Cyclery wrote:Maybe take a look at a spoke like the Cxrays from Sapim. They have an ovalized blade shape which makes them very aero with respectably high yaw angle tolerances.
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HammerTime2 wrote:Are they any different from DT Aerolites in that regard?
I think they would provide very similar advantages to the Cxrays. I don't have any paperwork though to show drag coefficient differences.
Hi,
They are the same shape. The only spoke (by Sapim) that does better as far as aero goes is a type that's made especially for FKC (Francois Kerautret). Unfortunately I do not have actual details, I'm just repeating what the French press is saying here.
There is however a new flat Superspoke (Sapim again) that is reportedly lighter and potentially even more aero due to less material etc.
http://www.rouesartisanales.com/article-53429708.html (Thanks to Adrien Gonthier for the scoop)
Ciao,
HammerTime2 wrote:Are they any different from DT Aerolites in that regard?Zen Cyclery wrote:Maybe take a look at a spoke like the Cxrays from Sapim. They have an ovalized blade shape which makes them very aero with respectably high yaw angle tolerances.
They are the same shape. The only spoke (by Sapim) that does better as far as aero goes is a type that's made especially for FKC (Francois Kerautret). Unfortunately I do not have actual details, I'm just repeating what the French press is saying here.
There is however a new flat Superspoke (Sapim again) that is reportedly lighter and potentially even more aero due to less material etc.
http://www.rouesartisanales.com/article-53429708.html (Thanks to Adrien Gonthier for the scoop)
Ciao,
Last edited by fdegrove on Wed Jul 25, 2012 11:51 pm, edited 1 time in total.
Being a snob is an expensive hobby.
sapim cx ray are razor sharp, i love them. what about "fake" fat aero CN and others? easton ec 90 aero has strange sapim spokes..or are they SAP spokes? i think sapim lasers 1.5(1.4 after tension) are pretty aero
Not shure about this one, but my take is the wooshing sound comes from the rims, well, the rims serve as harmony tables that amplify the spokes vibrations in the wind, like a violin or guitar. That's why very thin walled, deep carbon rims seem to sound louder...
...Makes sense ?
Louis
...Makes sense ?
Louis
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