help me to choose the right spokes
09-24-23, 01:29 PM
#26
Junior Member
I'd expect the thinner spokes to reduce peak dynamic forces within the wheel. This should increase fatigue resistance but also increase resilience to road surface defects; bigger tyres also help here. I get about a 1/4 turn wind-up at 100 kgf spoke tension. Lasers should take 250 kgf if Sapim's 1500 N/mm^2 'strength' is yield rather than ultimate so strength is not an issue. It may also be that the greater spoke stretch also distributes load over more spokes?
09-24-23, 01:46 PM
#27
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Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
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Technically correct, but semantically a distinction without a difference.
While I agree with you, I accept that when people speak about wheel strength, they usually mean durability.
While I agree with you, I accept that when people speak about wheel strength, they usually mean durability.
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FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
09-24-23, 02:57 PM
#28
Shimano marketing? CCB is traditional, adjustable, you can replace the cone and balls. Downsides: you have to adjust them, you can't (generally) replace the cups.
OTOH the deep groove ball bearing: not adjustable, can't replace components (except balls in some bottom brackets) but can replace entire unit.
If there was any doubt of the ability of the deep groove bearing to resist axial load I'd expect there would be hubs with angular contact bearings, but I've not seen any.
OTOH the deep groove ball bearing: not adjustable, can't replace components (except balls in some bottom brackets) but can replace entire unit.
If there was any doubt of the ability of the deep groove bearing to resist axial load I'd expect there would be hubs with angular contact bearings, but I've not seen any.
09-24-23, 05:45 PM
#29
I know what you are getting at, but "bad spokes" aren't going to make the rim dent easier or go out of true more often. They will either break, or not.
09-24-23, 06:05 PM
#30
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Build two identical wheels, but use spokes on one from a known lot with a breakage problem. The wheels will perform identically, but the one with suspect spokes will reach their fatigue limit sooner and have to be replaced if they break.
I know what you are getting at, but "bad spokes" aren't going to make the rim dent easier or go out of true more often. They will either break, or not.
I know what you are getting at, but "bad spokes" aren't going to make the rim dent easier or go out of true more often. They will either break, or not.
It's purely semantics. Whenever a potential client talks about wanting a stronger wheel, I hear a request for one that lasts longer. (except for those few cases, ie. 350# rider) where strength, might be a factor.
Over the years I've often had to deal with the paradox of explaining how my "weaker" build, ie. lighter spokes, can be "stronger" (more durable).
FWIW, I generally don't reuse spokes, and given labor costs, consider doing so to be false economy.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
09-25-23, 06:42 AM
#31
Might as well replace the skewer, too.
09-27-23, 08:17 AM
#32
Junior Member
Thread Starter
yesterday I was told that it makes no sense to have type#2 spokes with a 36 holes rim, it only makes sense to have type#3 spokes.
Why?
Last edited by DiTBho; 09-27-23 at 10:35 AM.
