HOT: Active* forum members generally gain 5% discount at starbike.com store!
Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Articles FAQ Contact About




Post new topic Reply to topic  [ 20 posts ] 
Go to page Previous  1, 2
Author Message
 Post subject:
PostPosted: Mon Mar 08, 2004 5:30 am 
Offline

Joined: Wed Feb 18, 2004 10:19 pm
Posts: 108
Are you serious? The independent variable was heart rate? If so, the "study" is bunk. I might believe the test IF the independent variable was power, but heart rate is way too variable. Besides, there are so many other factors to consider when testing a product (wind, temperature, etc.) that a "test" with only two trial (n=2) is even more flimsy.

The attack on the "model" developed by analytic cycling is a joke. It's like the attack on the "theory" of evolution.

In three words, Analyticcycling.com is right.

Ciao,
Andrew

EDIT:

Hm.. The article states: "The average heart rate reached during the test with the Stiletto was 159 bpm, while with the Ksyrium the average was 158 bpm. The tests were conducted in a short time period with equal weather and physical conditions, utilizing a consistent cadence and power." But it also states that they ONLY used a heart rate monitor. So do they have h.r. data and power data or just h.r. data? Regardless, subtle shifts in the wind change completely fudge up the data. And my other point that n=2 also shows that this "test" really is invalid.

So my conclusion is: Go to http://www.analyticcycling.com and see for yourself.




cadence90 wrote:
Joel wrote:
1 min on 25 is not that much. When you ride a climb one two times, you'll be faster the second time with the same condition, just because you know what follows,etc.

This is the climb they use for all their testing, it says so in the article.
Also, the article mentions the force exerted was kept consistent, 159bpm on the Spadas, 158bpm on the Ksyriums, in order to provide a clear basis for comparison. It's not like they didn't know know the climb with the other products and therefore by the time they got to Spada familiarity bred betterment.
It's more like Ferrari testing at Maranello: everything except the one variable being observed is kept consistent. Seems valid to me.


Top
 Profile  
 
 Post subject:
PostPosted: Mon Mar 08, 2004 5:52 am 
Offline
User avatar

Joined: Sun Dec 14, 2003 1:52 am
Posts: 1610
Actually, the independent variable was the wheelset in question.
But, whatever, I simply translated the article as a favor to the Forum.
And I do think real world testing is more valid than an Excel model, excuse me.

_________________
"Gimondi è un eroe umano, che viene sconfitto ma che continua la sua corsa fino a tornare a vincere." - Enrico Ruggeri


Top
 Profile  
 
 Post subject:
Posted: Mon Mar 08, 2004 5:52 am 


Top
  
 
 Post subject:
PostPosted: Mon Mar 08, 2004 6:26 am 
www.2peak.com

Possibly the best for calculations, they have individually tested different wheels!

Check it out

www.2peak.com


Top
  
 
 Post subject:
PostPosted: Tue Mar 09, 2004 8:21 pm 
Offline

Joined: Fri Jan 09, 2004 5:04 am
Posts: 149
no reply to my last post, ye olde bald one?


Top
 Profile  
 
 Post subject:
PostPosted: Wed Mar 10, 2004 5:09 am 
Offline
User avatar

Joined: Sun Dec 14, 2003 1:52 am
Posts: 1610
danielgillett wrote:
www.2peak.com

Possibly the best for calculations, they have individually tested different wheels!

Check it out

www.2peak.com

Dan,
I'm curious about that thing. Are you referring to the Speed Calculator?
If so, I ran several calcs of the different wheels they list: same hilly ride, same rider power, elevation, distance, rider weight, bike weight, etc. All data the same except wheels. According to that thing, the Alex would perform marginally better than the Ksyrium, the Lightweight even worse; but a "Box rim 32 hole" performs the best of all!
Are you sure this is an accurate calculator? Just wondering how it's set up, and it leads me to believe that theory doesn't necessarily reflect practice....

_________________
"Gimondi è un eroe umano, che viene sconfitto ma che continua la sua corsa fino a tornare a vincere." - Enrico Ruggeri


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 20 posts ] 
Go to page Previous  1, 2


Who is online

Users browsing this forum: Exabot [Bot], genesis692, Google Adsense [Bot], robertg, sikptq and 45 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:  

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. 2003 Litespeed Ghisallo?

in Road

logella

8

926

Fri Mar 07, 2014 12:54 am

ghisallo2003 View the latest post

There are no new unread posts for this topic. Blk Tec C1 Wheels

in Road

RippedUp

10

548

Sun Nov 23, 2014 7:21 pm

kavitator View the latest post

There are no new unread posts for this topic. Wheels for a Venge

in Road

fullrig1795

0

326

Fri Nov 21, 2014 2:58 pm

fullrig1795 View the latest post

There are no new unread posts for this topic. 9T pulley wheels

in Road

eliflap-scalpel

10

662

Tue Aug 26, 2014 2:46 am

maxxevv View the latest post

There are no new unread posts for this topic. Izar Wheels

in Road

maggierose

0

356

Mon Feb 17, 2014 12:04 am

maggierose View the latest post


It is currently Thu Nov 27, 2014 12:15 am

All times are UTC + 1 hour




Advertising   –  FAQ   –  Contact   –  Convert   –  About

© Weight Weenies 2000-2013
hosted by starbike.com


How to get rid of these ads? Just register!


Powered by phpBB