Lightweight EVO

Discuss light weight issues concerning road bikes & parts.
ome rodriguez
Posts: 509
Joined: Fri Feb 24, 2006 9:16 am

by ome rodriguez

Lightweight discbrake wheels going tubeless.

Image

by Weenie


spdntrxi
Posts: 3383
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

they look nice

Fernweg.... profile looks ..updated

SashaJoseph
Posts: 33
Joined: Sun Jun 02, 2019 8:38 pm

by SashaJoseph

Meilenstein EVO:
- 1380g: competitive but there are lighter options
- tubeless: eventually....
- still v-:shape: other companies seem to go back to a more v-shape but it is a pity that lightweight does not bother to do wind tunnel testing
- 18,2 mm inner width
- usual lightweight claim about lateral stiffness: no idea what to think about it.

A step in the right direction but nothing justifying the monstruous price tag IMHO.

User avatar
kgt
Posts: 8019
Joined: Sun Jun 18, 2006 10:29 am
Location: Athens, Greece

by kgt

I doubt there are wheels that even come close in terms of overall stiffness at this weight. Add the artisanal full carbon construction made in Germany and the pricetag does not seem that 'monstruous'. The fact that some top Ineos riders use LWs also proves something.

Ritxis
Posts: 417
Joined: Fri Jun 01, 2012 3:00 pm
Location: San Sebastian

by Ritxis

kgt wrote:
Sat Oct 19, 2019 8:19 pm
. The fact that some top Ineos riders use LWs also proves something.

that, what does it show?

User avatar
Dan Gerous
Posts: 1307
Joined: Sun Aug 12, 2007 6:28 pm

by Dan Gerous

Ritxis wrote:
Sat Oct 19, 2019 8:33 pm
kgt wrote:
Sat Oct 19, 2019 8:19 pm
. The fact that some top Ineos riders use LWs also proves something.

that, what does it show?
That Shimano wheels are heavy?

SashaJoseph
Posts: 33
Joined: Sun Jun 02, 2019 8:38 pm

by SashaJoseph

kgt wrote:
Sat Oct 19, 2019 8:19 pm
I doubt there are wheels that even come close in terms of overall stiffness at this weight. Add the artisanal full carbon construction made in Germany and the pricetag does not seem that 'monstruous'. The fact that some top Ineos riders use LWs also proves something.
MCFK, Tune, Schmolke and AX lightness to name a few er also handmade in Germany and much cheaper....

User avatar
wheelsONfire
Posts: 3079
Joined: Mon Jul 07, 2014 8:15 am
Location: NorthEU

by wheelsONfire

SashaJoseph wrote:
Sat Oct 19, 2019 9:09 pm
kgt wrote:
Sat Oct 19, 2019 8:19 pm
I doubt there are wheels that even come close in terms of overall stiffness at this weight. Add the artisanal full carbon construction made in Germany and the pricetag does not seem that 'monstruous'. The fact that some top Ineos riders use LWs also proves something.
MCFK, Tune, Schmolke and AX lightness to name a few er also handmade in Germany and much cheaper....
Yes, but Lightweight is stiffer and a more expensive wheel to make.
Does it make it better or worth the money?
Didn't say that!
Bikes:

Ax Lightness Vial EVO Race (2018.12.21)
viewtopic.php?f=10&t=156137
Paduano Racing Fidia (kind of shelved)
Open *UP* (2016.04.14)


Ex bike; Vial EVO D

Stueys
Posts: 402
Joined: Sat Nov 22, 2014 1:12 pm

by Stueys

Dan Gerous wrote:
Sat Oct 19, 2019 8:42 pm
Ritxis wrote:
Sat Oct 19, 2019 8:33 pm
kgt wrote:
Sat Oct 19, 2019 8:19 pm
. The fact that some top Ineos riders use LWs also proves something.

that, what does it show?
That Shimano wheels are heavy?
Or LW decided to invest in some marketing

XCProMD
Posts: 820
Joined: Sat Jan 26, 2008 10:25 am
Location: Cantabria

by XCProMD

Ineos is paying for the LW’s.

Yes, to each decide if they’re worth the cost but those prestressed carbon spokes need an expensive process.


Skickat från min iPhone med Tapatalk

User avatar
Calnago
Posts: 8608
Joined: Sun Nov 07, 2010 9:14 pm

by Calnago

wheelsONfire wrote:...
Yes, but Lightweight is stiffer and a more expensive wheel to make.
Does it make it better or worth the money?
Didn't say that!
Exactly, and to answer your rhetorical question, No, it doesn’t make it better. It really doesn’t take much consideration of the way that the wheels are constructed, with the broad flat spokes being bonded to the inside of the rim wall, both having to be relatively flat surfaces at similar angles to get a good bond when being under tension, to realize how difficult it would be to produce the varied rim profiles that you see on most other wheels these days without significantly changing how the spokes are bonded to the rim under tension. Seems with that construction they couldn’t be anything but V shaped, and that really limits what they can do shape wise. A much simpler stainless spoke/nipple arrangement has so many more advantages... doesn’t limit the profile shapes you can create in layup, and just look at a stainless steel flat spoke used in a Bora for example, or many other wheels for that matter. The flat surface area of these spokes are about 1/3 that of the flat surface area of Lightweight carbon spoke. Plus, you still can’t true the things. They are what they are. And you have to send them back for any kind of rim service, and even the bearings on the front wheel have to be sent in for proper servicing. Something to keep in mind moreso than other wheels, especially when dealing with a company that very well might not be in business a year from now. Complexity of construction and difficulty of service are huge negatives when there are much better and simpler designs available that perform better as well. They sell on looks and perhaps a perception that since they cost so much they must be better. But stiff they are. I know more than one person with more money than experience where that perception definitely played a big part in the buying decision. But after a scary descent on the wheels, one asked me “Why didn’t you tell me how these wheels were in the wind?” I just said “Would you have listened?” He would have bought them anyway. He liked how they looked and they cost a lot. Pretty much his criteria for buying them right there. Yet doesn’t know how to do the simplest thing mechanically in his bike. As long as you know why you’re buying them, then it’s all good, regardless of your reasons.
Last edited by Calnago on Sat Oct 19, 2019 10:40 pm, edited 1 time in total.
Colnago C64 - The Naked Build; Colnago C60 - PR99; Trek Koppenberg - Where Emonda and Domane Meet;
Unlinked Builds (searchable): Colnago C59 - 5 Years Later; Trek Emonda SL Campagnolo SR; Special Colnago EPQ

User avatar
themidge
Posts: 1207
Joined: Fri Jan 13, 2017 4:19 pm
Location: underneath sweet Scottish rain

by themidge

From a structural point of view it seems that Lightweights will always have to be based on that V profile. The fact that it's the same angle as the spokes is part of what makes them so stiff.
I do wonder though whether they could build a toroidal (or whatever is the fashion these days) fairing around it for aerodynamics, which wouldn't need to be structural. It would add weight granted, but probably no more than the rest of the Lightweight design compensates for - they'd still have a very stiff, fairly light, and now aerodynamic wheelset.

beanbiken
Posts: 729
Joined: Tue Mar 18, 2014 10:13 pm
Location: Great Southern Land

by beanbiken

Wonder why then my Corimas MCC’s are not v shaped with straight sides and appear to have the spokes also bonded to the inside rim walls. I also wond have expected that the round(ish) spokes would be more difficult to shape to suit????
BB

Coffee & carbon

XCProMD
Posts: 820
Joined: Sat Jan 26, 2008 10:25 am
Location: Cantabria

by XCProMD

The Lighteweight’s V shaped rim is already as thin as it can be, only three layers of 70g CF laminated on a foam core. The trick is that part under tension all the time, regardless of what the wheel is doing and the tyre pressure. It’s job is to join the outer “belt” supporting the tire and brake track to the inner to which the spokes are attached

It’s theoretically possible to have a different shape, toroidal or whatever, as the spokes are mainly kept under tension by the inner belt. Making a kink after that belt and onto a curves rim wall is not a problem structurally. It can be a little complicated process wise, that’s true, and would make repairing the wheel even more difficult than it is today.


Skickat från min iPhone med Tapatalk

by Weenie


jlok
Posts: 1137
Joined: Tue Jun 30, 2015 3:30 am

by jlok

How much does tubeless implementation affect the design?
Litespeed T1sl Disc / BMC TM02 < Giant Propel Advanced SL Disc 1 < Propel Adv < TCR Adv SL Disc < KTM Revelator Sky < CAAD 12 Disc < Domane S Disc < Alize < CAAD 10

Post Reply
  • Similar Topics
    Replies
    Views
    Last post