extralite spd 2 hub thoughts?
Posted: Fri Mar 09, 2018 2:24 am
Weight Weenies
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extralite spd 2 hub thoughts?
https://weightweenies.starbike.com/forum/viewtopic.php?f=3&t=150618
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Re: extralite spd 2 hub thoughts?
Posted: Fri Mar 09, 2018 7:28 am
What exactly would you like to know?
Re: extralite spd 2 hub thoughts?
Posted: Fri Mar 09, 2018 7:28 am
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Re: extralite spd 2 hub thoughts?
Posted: Mon Mar 12, 2018 3:19 pm
General thought for such a lightweight hub. Sound / Flex / durability.
Re: extralite spd 2 hub thoughts?
Posted: Mon Mar 12, 2018 4:34 pm
Wow 146 grams for the rear 6-bolt disc hub, there aren't even that many front disc hubs that come in that light. I know it would add weight, but it would be really nice if Extralite would introduce centerlock versions of that hubset as I could easily see that making for a 1250-gram tubeless wheelset.
Re: extralite spd 2 hub thoughts?
Posted: Tue Mar 13, 2018 12:47 pm
I totally agree. I would be interested if there was a centerlock version too! as i have a bunch of Centerlock rotors already on my other sets of wheels.
Re: extralite spd 2 hub thoughts?
Posted: Wed Mar 14, 2018 3:47 am
Extralite is rather limited on their hub versions. This SPD2 only comes in QR and 12x142. I had to customize axles for use in 10x135 and 12x135 frames.
As for the 6-bolt pattern, that's all they do, and ever have made.
As for the 6-bolt pattern, that's all they do, and ever have made.
Re: extralite spd 2 hub thoughts?
Posted: Fri Mar 30, 2018 3:53 am
Great hubs, but you need to be aware they require a bit more service than others. The bearing pre-load also loosens off so requires a little attention every now and then to snip up a little or you'll get flex at the rim.
Re: extralite spd 2 hub thoughts?
Posted: Fri Mar 30, 2018 5:57 am
Isn't centerlock a slightly heavier design? Maybe that's why we won't see a centerlock extralite hub. Just a guess...
Nice hubs. I'd like to try sometime but the SP-T is quite rare and expensive. I like the idea of triplet lacing 2:1. (I don't use disc brakes)
/a
Nice hubs. I'd like to try sometime but the SP-T is quite rare and expensive. I like the idea of triplet lacing 2:1. (I don't use disc brakes)
/a
Re: extralite spd 2 hub thoughts?
Posted: Fri Mar 30, 2018 4:07 pm
Sadly the sp-t hub gives lower lateral stiffness than the STD hub so the nds flange has be another 4mm out to reverse that fact.
Re: extralite spd 2 hub thoughts?
Posted: Fri Mar 30, 2018 5:37 pm
Back to the disc brake hub l, the rim brake road hubs seem to hold well do there should be no reason why the disc brake hub should be any worse.
Re: extralite spd 2 hub thoughts?
Posted: Fri Mar 30, 2018 5:37 pm
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Re: extralite spd 2 hub thoughts?
Posted: Sat Mar 31, 2018 1:18 am
I'm curious about the SP-T if I may discuss one last thing...
If the total tension on the 8 NDS spokes is equal to or higher than the 12 on the sp2, wouldn't that result in a comparable or perhaps better lateral stiffness? Assuming radial nds and 2x ds.
Not looking at the hubs max tension, with 33% more ds spokes there should be up to 33% more radial/lateral tension available to play with. With 33% less nds spokes the low tension there needs to be upped 33% plus whatever extra tension needed for balancing the extra DS spokes. 33%^2 = 78%. It's probably within the nds spokes capability to give them 78% more tension, no?
Solid rims would maybe be the bigger problem as with only 8 spokes there could be weird things happening under such high tensions. Nds flange could be the next problem.
I'm just an amateur but I like to think about these sort of things...
/a
If the total tension on the 8 NDS spokes is equal to or higher than the 12 on the sp2, wouldn't that result in a comparable or perhaps better lateral stiffness? Assuming radial nds and 2x ds.
Not looking at the hubs max tension, with 33% more ds spokes there should be up to 33% more radial/lateral tension available to play with. With 33% less nds spokes the low tension there needs to be upped 33% plus whatever extra tension needed for balancing the extra DS spokes. 33%^2 = 78%. It's probably within the nds spokes capability to give them 78% more tension, no?
Solid rims would maybe be the bigger problem as with only 8 spokes there could be weird things happening under such high tensions. Nds flange could be the next problem.
I'm just an amateur but I like to think about these sort of things...
/a