Lightest 83mm cranks?

[William42]

from my experience they are heavy, the engagment is poor and they need constant attention when riding hard or in poor conditions.i guess there is a reason why they are the only (high end) manufacturer using it.

no idea what the climate is like in israel, where I am I don't see a lot of slop - even when it rains its not super mucky. I also work at a shop, and don't mind spending 5 minutes pulling my wheel off, opening my hubs, dropping grease and new bearings in, and putting everything back together.

and that said, I'm currently running sealed bearing hubs.

edit: anyway, back ot

[Dogboy]

from my experience they are heavy, the engagment is poor and they need constant attention when riding hard or in poor conditions.i guess there is a reason why they are the only (high end) manufacturer using it.

Engagement is better than Hope and DT Swiss (both fine hubs) as well as others. Weight is competitive with all but the lightest hubs. Need constant attention? Nope.

[no skid marks]

Are. Ranks really the right place for carbon? Due to size restrictions can carbon cranks actually be made lighter while still being at least as tough? Carbon bars and seats seems like a bad idea due to their diameter not meeting the carbons needs for a larger box section to maximize strength. Yes there's no clamping force issues with cranks like bars and stem, but they still. Red pedal inserts and bb connecting and also they need to be kept thin for q factor etc.

[4130biker]

I'm sold on my carbon cranks and am a bit surprised at all the people breaking them. The point about how hard you are on cranks in the past is a good one- I've never had issues in the past with cranks that some would say suck...

[mtg]

....Due to size restrictions can carbon cranks actually be made lighter while still being at least as tough? Carbon bars and seats seems like a bad idea due to their diameter not meeting the carbons needs for a larger box section to maximize strength...

Using composites allows for an anisotropic structure vs isotropic; combining that with high stiffness and strength along the direction of the fibers, that's where the structural advantage of carbon lies. Make it strong where you need it, and light elsewhere. It's not increasing cross-sectional area; that's what you do when you switch to lower strength, but lower density materials (i.e. steel to aluminum).

Anisotropic: not the same strength in all directions (eg. composites using unidirectional tapes or woven fabric, not the randomly oriented chopped fiber stuff)
Isotropic: same strength in all directions (eg. metals)

[jonKranked]

Shimano also doesn't use sealed bearing in their hubs, so would you say its the way to go ?

their hubs also feel really good, last a long time, and are incredibly easy to repack.

There is more the one way to skin a cat.

from my experience they are heavy, the engagment is poor and they need constant attention when riding hard or in poor conditions.i guess there is a reason why they are the only (high end) manufacturer using it.

to touch on what leland said, shimano is really effing good at forging/casting things. as much as i've always wondered about why they never switched to sealed bearings, i've never, ever, had major issues with a shimano hub.

[rpet]

I'd like to see a drag comparison between Shimano loose ball hubs and $$$$ ceramic sealed bearing hubs.

[marshalolson]

I'd like to see a drag comparison between Shimano loose ball hubs and $$$$ ceramic sealed bearing hubs.

"nothing spins like vintage campy, bro"

-guy with nut-hugger jeans cut off about 4" above the knee

[no skid marks]

Using composites allows for an anisotropic structure vs isotropic; combining that with high stiffness and strength along the direction of the fibers, that's where the structural advantage of carbon lies. Make it strong where you need it, and light elsewhere. It's not increasing cross-sectional area; that's what you do when you switch to lower strength, but lower density materials (i.e. steel to aluminum).

Anisotropic: not the same strength in all directions (eg. composites using unidirectional tapes or woven fabric, not the randomly oriented chopped fiber stuff)
Isotropic: same strength in all directions (eg. metals)

I must admit my carbon knowledge is pretty limited, but surely the larger the diameter the more ease for carbon design. In the case of bars and stem, surely that's why we got 31.8 and now Easton are pushing 35mm. As for cranks with the limited space it doesn't appear a big enough surface area is available for bonding in the pedal threads or making the cranks both stiff, strong, tough, and light.
Wouldn't trying to build it light be much the same as low density metals, so stiffness etc can be gained by larger diameter. Also flatter surfaces would add to strength etc wouldn't it?

[Kntr]

Ok, so what are the lightest NON CARBON cranks?

[no skid marks]

Ok, so what are the lightest NON CARBON cranks?

The Hive, truvativ Decendant or older Gravity Lites were when I bought 6 months ago

[Lelandjt]

I think the old Gravity Lights were the lightest, though they were too flimsy for some riders. The new version is beefed up making them the same weight as Hive, ect.

[tabletop84]

e.13 LG1+r

http://gewichte.mtb-news.de/product-...-kurbel-lg1-dh

the r should have ~60g shaved off

Maybe not the lightes but probably the best weight/stability wise.

[gazzou]

LG1R weight 760 with BB

http://www.sicklines.com/2011/09/26/...crankset-2012/

[no skid marks]

I think the old Gravity Lights were the lightest, though they were too flimsy for some riders. The new version is beefed up making them the same weight as Hive, ect.

Yeah, that's what I got. But I'm sub 70kg, and have 9'25 rear suss of high pivot plushness.