Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Galleries NEW FAQ Contact About Impressum
It is currently Thu Sep 29, 2016 6:10 pm
Recently the board software has been updated and there are some known bugs/failures:
- Avatars are currently not being displayed ✔ FIXED
- Tapatalk connection is currently broken ✔ FIXED
- Avatars cannot be uploaded ✔ FIXED

Please note that we will soon do some changes in WW board template design in case to get a fully mobile/desktop responsiveness board!
If you find more errors please post it here: http://weightweenies.starbike.com/forum/viewtopic.php?f=7&t=139062


All times are UTC+01:00





Post new topic  Reply to topic  [ 7 posts ] 
Author Message
 Post subject: Laterally Stiff Wheelset
PostPosted: Fri Aug 10, 2012 3:36 pm 
Offline

Joined: Wed Jan 14, 2009 3:31 am
Posts: 71
I've been trying to find an aero, laterally stiff wheel set, and that's some what light weight in that order, but I've been coming to a wash each time.

I've tried Zipp 101s and 303 Firecrests with Zipp 188 & 88 hubs and those are very flexy when I put lateral force on the brake track with my hands--meaning, if I push the rim of the wheel towards the brake pad it would easily touch (with greater than 5mm pad clearance!).

My friend has told me the Enve 45s laced to DT Swiss 240s do the same as well. Will the Enve SMART 3.4 tubulars laced 20/24 to Chris King R45 hubs do the same?

Anyways, what's the issue here? Am I overlooking something or are wheels supposed to flex that much from side to side? I don't get it.


Top
   
 Post subject: Laterally Stiff Wheelset
Posted: Fri Aug 10, 2012 3:36 pm 


Top
   
 
PostPosted: Fri Aug 10, 2012 5:10 pm 
Offline
User avatar

Joined: Tue Apr 18, 2006 3:03 am
Posts: 2352
Location: Islip, NY
The 3.4s laced to Alchemy hubs or Tune hubs will be laterally stiffer than CK or DT. When I build 3.4s I use Sapim Race on the drive side of the rear wheel. That build will be much better than other options mentioned.

_________________
www.ergottwheels.com


Top
   
PostPosted: Fri Aug 10, 2012 5:37 pm 
Offline

Joined: Mon Sep 07, 2009 3:10 am
Posts: 404
You are not missing anything. That is why some of us pay up and ride Carbonsport Lightweight Tubulars. No more flex.


Top
   
PostPosted: Fri Aug 10, 2012 6:13 pm 
Offline

Joined: Mon Jan 24, 2011 8:09 pm
Posts: 918
So pushing the rim with your hands is the indicator and test for how stiff a wheel is?!?!

I can do that with any wheel, they are carbon fiber, not solid tempered steel.

But seriously, I believe the stiffer the wheel, when pedaling, the more it will move between the brake tracks.

Mavic Cosmic Carbone ultimate tubies are some of the stiffest out there.

I run Zipp 303 firecrest, pretty darn stiff.

If Big Tom Boonen can ride stock 404 FC...I'm sure they are good enough for just about anybody for stiffness, aero and ride quality.


Top
   
PostPosted: Fri Aug 10, 2012 6:50 pm 
Offline
User avatar

Joined: Tue Apr 18, 2006 3:03 am
Posts: 2352
Location: Islip, NY
sedluk wrote:
You are not missing anything. That is why some of us pay up and ride Carbonsport Lightweight Tubulars. No more flex.


He also said aero. :mrgreen:

_________________
www.ergottwheels.com


Top
   
PostPosted: Fri Aug 10, 2012 7:42 pm 
Offline
User avatar

Joined: Wed May 18, 2005 6:24 pm
Posts: 4438
Location: BELGIUM
as Zigmeister said, many here have a ill conceived notion on wheel stiffness.
Both a very stiff wheel and a very soft wheel will rub the brakes.
The difference is that a very stiff wheel won't deform as a soft wheel does, meaning a lateral force on once side creates a deflection to the opposite on the top side of the rim.

as for the Zipps, better make sure the preload is set correctly or they'll move quite a bit.


Top
   
Posted: Fri Aug 10, 2012 7:42 pm 


Top
   
 
PostPosted: Fri Aug 10, 2012 11:35 pm 
Offline
User avatar

Joined: Sun May 31, 2009 8:47 pm
Posts: 900
Location: durp durp durp
semaj wrote:
Anyways, what's the issue here? Am I overlooking something or are wheels supposed to flex that much from side to side? I don't get it.



Forget the side to side, or at least place less of a priority on it. Wheels all deflect - they need to otherwise they would need to be incredibly over-built (heavy) to survive. The rotation rigidity is more important, as that is where your effort transfers & translates to forward movement.

Adrien's posting here (clipped from a previous repost) explains with more scientific basis (& a lot more experience) what you are raising question against.

viewtopic.php?f=3&t=97599&start=15#p834344


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 7 posts ] 

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. lightweight & stiff Ti frameset?

in Road

addictR1

11

797

Sat Mar 19, 2016 12:32 am

Juanmoretime View the latest post

There are no new unread posts for this topic. Stiff and Light Handlebar/Stem Combo

in Road

3Pio

6

412

Mon Aug 22, 2016 12:16 pm

3Pio View the latest post

There are no new unread posts for this topic. Frameset search - Light and stiff with a tall Stack height?

in Road

RedRacer

11

1031

Wed Nov 04, 2015 10:28 pm

eaglejackson View the latest post

There are no new unread posts for this topic. Dura Ace 9070 Rear Mech Hanger stiff problem

in Road

TheDarkInstall

6

571

Sun Jun 05, 2016 5:47 am

TheDarkInstall View the latest post

There are no new unread posts for this topic. Best all round wheelset

[ Go to page: 14 5 6 7 8 ]

in Road

muntos

107

17662

Mon Mar 14, 2016 1:56 pm

muntos View the latest post


All times are UTC+01:00


Who is online

Users browsing this forum: aih312, Google [Bot], la rosa and 25 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited