Discuss light weight issues concerning mountain bikes & parts.
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F45
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by F45 on Thu Dec 08, 2022 5:02 pm
I see these on aliexpress for about $400 for a set of 64. About the same weight as Berd. Would they have a more direct power transfer feel?
I'm thinking: Extralight Hyperboost3 hubset, carbon spokes, Carbonfan rim. About 1000g.
But for mountain biking would a rock strike shatter them?

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TLN
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by TLN on Thu Dec 08, 2022 10:03 pm
F45 wrote: ↑Thu Dec 08, 2022 5:02 pm
But for mountain biking would a rock strike shatter them?
I think that's the reason. It works great for applied forces in one direction (length-wise) but will crack on side impact
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alexdi
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by alexdi on Fri Dec 30, 2022 4:33 pm
Similar weight, diametrically opposed riding experience. Carbon is considerably stiffer than steel. Berd, the opposite. Carbon paired with a similar ultra-stiff T800/T1000 rim is likely to make your teeth chatter. Ride quality aside, I'd be concerned about increased rim stress (and hub stress to a lesser extent) during sharp impacts and would definitely choose a rim with reinforced spoke holes. I don't know that the spoke itself is more susceptible to failure from foreign objects, but I'd be much more proactive about replacing damaged carbon spokes.
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F45
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by F45 on Fri Dec 30, 2022 8:12 pm
There's a video on youtube where the Winspace guy shoves a stick into the carbon spoked wheel and it comes out fine.
Additionally, I scraped a large rock with my derailleur and the carbon cage was pushed into the DT Aerolite spokes, snapping two. The derailleur had a little piece knocked off but it's fine. Thin steel vs thick carbon, I think carbon will be comparable.
Carbon spokes would be ok for mountain biking. Gulo makes wheelsets with them, but they are round. I want my spokes to be bladed so they look badass.
I see that Light Bicycle will build with carbon spokes so I might just have them do it with their 250g rims.
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scant
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by scant on Fri Dec 30, 2022 9:48 pm
if you ride somewhere very rocky, then carbon spokes are far from ideal. that said i'd like to try berd spokes upfront, purely for the apparent softer ride feel