Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Galleries NEW FAQ Contact About Impressum
It is currently Tue Sep 19, 2017 6:27 pm

Unanswered topics | Active topics


» »

All times are UTC+01:00

Forum rules


Please click here to view the forum rules



Post new topic  Reply to topic  Page 1 of 1
  [ 11 posts ] 
  Print view Previous topic | Next topic 
Author Message
djconnel
PostPosted: Tue Jul 17, 2012 11:33 pm 
Offline
User avatar

Joined: Wed Sep 26, 2007 1:57 pm
Posts: 7925
Location: San Francisco, CA
Nice plot:

Image

_________________
http://djconnel.blogspot.com/
Fuji SL/1
Top
   
Reply with quote  
btompkins0112
PostPosted: Tue Jul 17, 2012 11:35 pm 
Offline
User avatar

Joined: Fri Feb 11, 2011 3:04 am
Posts: 2693
Location: Mississippi
Well......that's no fun now is it.

_________________
Mosaic RS-1
http://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=138478

Cielo by Chris King Cross Racer
http://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=134376
Top
   
Reply with quote  
Weenie
Posted: Tue Jul 17, 2012 11:35 pm 


Top
   
 
prendrefeu
PostPosted: Tue Jul 17, 2012 11:40 pm 
Offline
User avatar

Joined: Wed Oct 31, 2007 10:32 pm
Posts: 8421
Location: Los Feliz, Los Angeles, California
Source?

_________________
Exp001 || Other projects in the works.
Top
   
Reply with quote  
wingguy
PostPosted: Wed Jul 18, 2012 12:03 am 
Offline

Joined: Thu Mar 08, 2012 11:43 pm
Posts: 3280
But what's the baseline reference for each one? The usual one is comparing every aero wheel to a Ksyrium, but what about the others?

Body position gives you 80% of your potential gains, if your start point was how high and how wide?

A good skinsuit gives you the most equipment advantage, but compared to what? An average skinsuit? An average road jersey? MTB Baggies and a t-shirt?
Top
   
Reply with quote  
teddysaur
PostPosted: Wed Jul 18, 2012 3:11 am 
Offline

Joined: Tue Jan 10, 2006 4:28 am
Posts: 119
So the lesson is getting our position checked for aerodynamic after getting fitted onto a bike. I wonder how much that will cost us.
Top
   
Reply with quote  
Dalai
PostPosted: Wed Jul 18, 2012 3:36 am 
Offline

Joined: Wed Dec 15, 2004 10:54 am
Posts: 1491
Location: Melbourne, Australia
It will you cost you nothing but time if you already own a power meter and willing to do some field testing...

Edit - Removed quote. Thanks 53x12 :wink:

_________________
http://climbinglama.blogspot.com.au


Last edited by Dalai on Wed Jul 18, 2012 4:09 am, edited 2 times in total.

Top
   
Reply with quote  
thisisatest
PostPosted: Wed Jul 18, 2012 3:57 am 
Offline
Shop Owner

Joined: Sat Jun 13, 2009 4:02 am
Posts: 1980
Location: NoVA/DC
i think a session in the A2 wind tunnel in NC is about $400. best to have everything prepared to switch quickly so youre not spending all the time messing around.
Top
   
Reply with quote  
53x12
PostPosted: Wed Jul 18, 2012 3:59 am 
Offline
User avatar

Joined: Fri Sep 15, 2006 6:02 am
Posts: 3727
Location: On the bike
^ Chung method.

http://www.cyclingpowermodels.com/CdAEstimation.aspx

Btw Dalai, don't quote post directly above yours. The mods hate it and it makes them crazy.

_________________
"Marginal gains are the only gains when all that's left to gain is in the margins."
Top
   
Reply with quote  
teddysaur
PostPosted: Wed Jul 18, 2012 4:11 am 
Offline

Joined: Tue Jan 10, 2006 4:28 am
Posts: 119
Power meter probably gonna cost 1-2k easily. And field testing may have other uncontrollable variables (wind, and gradient). $400 seems like a good deal to get things check out accurately and cheaply. I think I'm taking the sport too seriously.

Another cheap way is to study the frontal area for the cda model. What you need is a camera and some studio setup, I'm sure that can be calculated fairly fast and cheap.
Top
   
Reply with quote  
Dalai
PostPosted: Wed Jul 18, 2012 4:20 am 
Offline

Joined: Wed Dec 15, 2004 10:54 am
Posts: 1491
Location: Melbourne, Australia
Did say if you already own a power meter... The VE model (Chung model mention about actually prefers to have some elevation differences). With wind, you just needs to pick days with calm conditions and find a no traffic circuit to test.

$400 Does seem like a good deal! I spent time in a tunnel locally a while back and it was invaluable. But it's always a quest to refine and using field testing has been shown as an accurate way method to do this without having to go back into the wind tunnel.

_________________
http://climbinglama.blogspot.com.au
Top
   
Reply with quote  
Weenie
Posted: Wed Jul 18, 2012 4:20 am 


Top
   
 
53x12
PostPosted: Wed Jul 18, 2012 4:34 am 
Offline
User avatar

Joined: Fri Sep 15, 2006 6:02 am
Posts: 3727
Location: On the bike
I know these are assumptions but someone worried about aero most likely races. If they are serious about racing they most likely have a PM or have ability to borrow one from a team member. If they don't have time or funds to go to a tunnel, the chung method or VE method like Dalai mentioned are worth while. Especially if you just want to goof around and try different setups.

_________________
"Marginal gains are the only gains when all that's left to gain is in the margins."
Top
   
Reply with quote  
Display posts from previous:  Sort by  
Post new topic  Reply to topic  Page 1 of 1
  [ 11 posts ] 

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Aiming to participate in next L'etape, need clarification on interpreting equipment rule

[ Go to page: 1 2 ]

in Road

ninjasloth

27

1882

Sat Apr 15, 2017 12:53 am

964Cup View the latest post

There are no new unread posts for this topic. New Mavic Open Pro

[ Go to page: 1 … 5 6 7 8 9 ]

in Everything wheels

ALAN Carbon+

120

13295

Sun Sep 10, 2017 11:36 pm

bm0p700f View the latest post

There are no new unread posts for this topic. 2017 Mavic

in Everything wheels

gitsome

12

1322

Sun Feb 05, 2017 5:30 pm

TheKaiser View the latest post

There are no new unread posts for this topic. Just got some used Mavic SL's

in Road

zalle

5

1151

Fri Nov 11, 2016 12:56 am

AJS914 View the latest post

There are no new unread posts for this topic. New Mavic CXR Elite Wheels

in Road

brianwchan

1

1261

Wed Nov 09, 2016 2:15 am

pdlpsher1 View the latest post


» »

All times are UTC+01:00

Who is online

Users browsing this forum: Epic-o, J.v.S., Rob81 and 9 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