Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Galleries NEW FAQ Contact About Impressum
It is currently Mon Dec 11, 2017 10:46 am

All times are UTC+01:00




Post new topic  Reply to topic  [ 4 posts ] 
Author Message
PostPosted: Wed Oct 25, 2017 6:42 pm 
Offline

Joined: Wed Mar 15, 2017 12:30 am
Posts: 22
Hi,

just bought new Stingers and I noticed a difference between older models. In the old models (not necessary very old, just few years ago) the braking surface looked like a clean carbon fibre pattern. Below the braking surface (where decals were sticked) there was some kind of "no pattern carbon fibre" - just a black surface (see picture). In the new ones the clean black surface is also for the braking part (you can still see the carbon pattern on the gluing side).

Anyone notice any difference in performance of braking? In my opinion the black surface is more slippery so it could affects the performance but haven't tried it yet as we are off the season now :(
Image


Top
   
Posted: Wed Oct 25, 2017 6:42 pm 


Top
   
 
PostPosted: Thu Oct 26, 2017 6:36 am 
Offline

Joined: Sun Jun 12, 2016 1:35 pm
Posts: 110
I don't see why unidirectional fibre composite would be worse at braking than woven fibre composite. The real issue when braking on composite is what kind of temperature it can take before the material begins to warp or even soften. The trend is to push this temperature as high as possible, using better resins.
In terms of pads grabbing composite better, I have seen different solutions, mostly unconvincing and I thing the trend there is towards better pad material, rather than the old fashioned particle-coated brake track that you still see in many Chinese rims.

HED are at the front, when it comes to innovation, so if they use unidirectional fibres rather than woven, it's probably because overall their rims are better this way

_________________
https://whosatthewheel.com/


Top
   
PostPosted: Fri Oct 27, 2017 5:33 am 
Offline

Joined: Thu Sep 05, 2013 3:29 pm
Posts: 420
whosatthewheel wrote:
I don't see why unidirectional fibre composite would be worse at braking than woven fibre composite.
A lot of the new generation carbon rims from companies like Zipp, Fulcrum, Mavic, etc...have a heavily textured braking surface that is machined post production, in order to give it ridges that increase grip on the pads and perhaps improve water evacuation. If the texture of the old woven fiber on these HED rims causes small variations in the surface, corresponding to the weave, it might provide similar effect, whereas the unidirectional fiber on the new rims, may not. I agree that any effect would likely be small when compared to the coarse texturing of the new gen Zipps for instance, and perhaps the effect would get even smaller as the HEDs wore and get even smoother, but it is still possible.


Top
   
PostPosted: Tue Oct 31, 2017 2:47 am 
Offline

Joined: Wed Mar 15, 2017 12:30 am
Posts: 22
Ok, got the point. Thanks for the answers :-)


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 4 posts ] 

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. New braking surface pattern on Bora 35-50

in Everything wheels

ferrarista

14

2281

Wed May 24, 2017 4:04 am

Calnago View the latest post

There are no new unread posts for this topic. Lightest Aero Clinchers with an ally braking surface?

in Everything wheels

basenji29

4

583

Sat Aug 05, 2017 2:22 pm

basenji29 View the latest post

There are no new unread posts for this topic. Fulcrum Zero Nite/ Shamal Mille braking surface- what’s the latest?

in Everything wheels

ClydesdaleChris

0

249

Sun Dec 03, 2017 2:19 am

ClydesdaleChris View the latest post

There are no new unread posts for this topic. HED Stinger carbon 50/60mm

in For sale - Pictures are mandatory 22-3-13

RoadBikeStudio

0

265

Sat Sep 23, 2017 3:41 am

RoadBikeStudio View the latest post

There are no new unread posts for this topic. Calling all Enve wheel owners: any surface blems?

[ Go to page: 1 2 ]

in Road

angryasian

28

2833

Fri Dec 23, 2016 4:20 pm

spartan View the latest post


All times are UTC+01:00


Who is online

Users browsing this forum: MayhemSWE and 5 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