Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Galleries NEW FAQ Contact About
It is currently Thu Jul 28, 2016 6:12 am
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
PostPosted: Sun Jul 03, 2016 7:43 pm 
Online

Joined: Sat Apr 18, 2009 8:59 am
Posts: 738
Location: Surrey UK
Current setup S5 with zipp 303/404 tubs, which are and will be my main summer season wheels, at least for time being.
I was wondering what kind of improvement I can gain going for higher profile wheels.
The purpose: local 10m TTs and flat ish courses, from time to time.
The "gain" figures I am getting mainly refer to the standard shallow wheels. But what, if any, time improvement I can expect over 303/404 combo?
Contenders (if it's worth) Zipp 808, Reynolds Aero 90 or 72/90, Hed Jet Black 9 or 6/9 (all clinchers, weight and prices more or less on the same level).
Thanks in advance for any input.

_________________
Cervelo R5 VWD 5637g/12.43lb
Pronghorn XC SW Race 8284g/18.26lb


Last edited by 1415chris on Sun Jul 03, 2016 7:43 pm, edited 1 time in total.

Top
   
PostPosted: Sun Jul 03, 2016 8:16 pm 
Offline

Joined: Thu Jul 19, 2012 6:09 pm
Posts: 591
Location: Loveland, CO
In looking at the various aero comparison charts plotting drag vs. wind yaw angle, it appears that at the wind yaw angle near zero degrees, rim depth makes very little difference. Even a box rim will have very little drag difference compared to a deep profiled aer rim. On the other hand a deep profile wheel that sees a large side wind force will create a negative drag that actually pushes you forward. Ironically a higher side wind force also compromises your handling so choose your front wheel wisely. So your choice of wheel really depend on the wind condition of your TT. Good good reading on the wind yaw angle can be found here.

Image

http://flocycling.blogspot.com/2014/09/flo-cycling-aero-wheel-tutorial.html


Top
   
PostPosted: Sat Jul 23, 2016 10:48 pm 
Online

Joined: Sat Apr 18, 2009 8:59 am
Posts: 738
Location: Surrey UK
Almost there.... :)
Zipp 808 nsw vs Reynolds Aero 72/90?
Am I correct assuming that the handling and aero proprietary of both wheel sets are close? Reviews are rather positive, a bit more on Reynolds, as they are longer on the market.
I do like Zipp's new appearance, not so sure about the new hubs. I mean they look good, but how good they really are?
On the contrary Reynolds' seem to be very solid and proven.

_________________
Cervelo R5 VWD 5637g/12.43lb
Pronghorn XC SW Race 8284g/18.26lb


Top
   
PostPosted: Sun Jul 24, 2016 12:42 am 
Offline

Joined: Tue Feb 24, 2009 11:43 pm
Posts: 630
Location: Florida
For the price of nice new fast wheels you could find a lightly used TT bike and ride realistically up to 2-3km/hr faster. I see used P2s for 1500 US all the time.


Top
   
PostPosted: Sun Jul 24, 2016 12:54 am 
Offline

Joined: Thu Jul 19, 2012 6:09 pm
Posts: 591
Location: Loveland, CO
Please don't mention "Zipp" and "hub" under the same sentence :mrgreen:

http://enve.com/journal/all-about-road-hubs/


Top
   
PostPosted: Sun Jul 24, 2016 11:31 pm 
Offline
User avatar

Joined: Sun May 31, 2009 8:47 pm
Posts: 895
Location: durp durp durp
re that link from enve;

don't forget to mention deformed brake track & enve.. no one here has a great record.


The enve torque hub test is interesting but who really needs a hub designed for that level of loading (5000+ watts?) - and why cherry pick tune150 for the freehub pawl system but then tune170 for the stiffness/weight assessment..


Selective science from a manufacturer selling something.



In all fairness to zipp they did come up with the wide rim & pushed it out into public use.


Top
   
PostPosted: Mon Jul 25, 2016 12:37 pm 
Offline
User avatar

Joined: Sun Jun 18, 2006 10:29 am
Posts: 5368
Location: Athens, Greece
+1
One should never, ever trust 'tests' done by companies who just want to sell their products.
What collective experience shows though is that Zipp hubs are practically inferior in comparison to hubs from Campagnolo, Shimano or DT.

_________________
My 6696gr Cipollini Bond
My 8618gr Colnago Master X-light


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. Experience with Profile Design 24 wheels

in Everything wheels

youngblud

3

266

Tue Feb 16, 2016 9:40 pm

youngblud View the latest post

There are no new unread posts for this topic. Spoke advice needed

in Everything wheels

scottw

3

298

Tue Nov 17, 2015 2:40 am

scottw View the latest post

There are no new unread posts for this topic. Advice needed: Replace Freehub?

in Everything wheels

djtodd

12

612

Fri Dec 11, 2015 4:17 pm

djtodd View the latest post

There are no new unread posts for this topic. Build Etiquette Advice Needed

in Road

mnmasotto

2

514

Fri Dec 18, 2015 2:57 am

showdown View the latest post

There are no new unread posts for this topic. Press Fit 30, GXP bottom bracket advice needed

in Road

Mr.Gib

13

360

Sat Apr 30, 2016 2:10 pm

rbrtwyn View the latest post


All times are UTC+01:00


Who is online

Users browsing this forum: RichTheRoadie and 2 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