Weight Weenies
* FAQ    * Search    * Trending Topics
* Login   * Register
HOME Listings Blog NEW Galleries NEW FAQ Contact About
It is currently Sat Jul 30, 2016 9:51 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  [ 41 posts ]  Go to page 1 2 3 Next
Author Message
PostPosted: Thu Jul 19, 2012 4:58 pm 
Offline

Joined: Mon Dec 14, 2009 6:26 pm
Posts: 839
It seems obvious that they would but my light bike doesn't seem to make any appreciable difference in performance compared to my commuter. There is about 1.5 kg difference. I haven't tested it on 16K mountain climbs but on some tough hills.


Top
   
PostPosted: Thu Jul 19, 2012 5:08 pm 
Offline

Joined: Fri Oct 07, 2011 2:08 pm
Posts: 1365
A few guys I meet on the road use a steel heavy bike to train with and a carbon bike to race on .
They don't think it makes that much difference more about the mind set, getting there racing head on having the best equipment .


Top
   
PostPosted: Thu Jul 19, 2012 5:09 pm 
Offline

Joined: Wed Feb 02, 2011 3:48 am
Posts: 1431
It makes 1.5kg difference then - simple maths.


Top
   
PostPosted: Thu Jul 19, 2012 6:04 pm 
Offline
User avatar

Joined: Sun Jun 18, 2006 10:29 am
Posts: 5373
Location: Athens, Greece
Add your weight (plus, helmet, clothes, bottles etc. etc.) to the bike's weight and see what % is the total difference. You 'll realise it is not that much.

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


Top
   
PostPosted: Thu Jul 19, 2012 6:14 pm 
Offline

Joined: Mon Mar 19, 2012 3:31 pm
Posts: 459
Lighter riders climb more easily. i have a steel bike that rockets up climbs, helped by the fact that i've lost 5 kilo's. Steel forever, carbon never.


Top
   
PostPosted: Thu Jul 19, 2012 6:33 pm 
Offline
User avatar

Joined: Sat Aug 29, 2009 4:30 pm
Posts: 1906
If people don't think it makes a significant difference, then why is there a Weight Weenies forum ? :noidea:

We could all just join Weight Watchers if it were all about body weight. :thumbup:


Top
   
PostPosted: Thu Jul 19, 2012 6:57 pm 
Offline
User avatar

Joined: Wed Oct 31, 2007 10:32 pm
Posts: 8299
Location: Los Angeles / Glendale, California
Rick wrote:
If people don't think it makes a significant difference, then why is there a Weight Weenies forum ? :noidea:


Because some of us enjoy the feel of light bikes, experimenting with technology and material limits.

Others are attracted to a international forum that tends to show high end equipment, and then will purchase their way towards a light-weight setup.
However these same people tend to be the ones that do not account for fitness. Light bikes are not a replacement for good fitness.
See signature.

_________________
Exp001 || Other projects in the works.


Top
   
PostPosted: Thu Jul 19, 2012 7:39 pm 
Offline
User avatar

Joined: Wed May 18, 2005 6:24 pm
Posts: 4438
Location: BELGIUM
if a 80kg rider+bike system rides a 15km climb at 7% at 250W, losing 1.5kg will make you roughly 60 seconds faster.
that's assuming all other factors are equal.
see analyticcycling.com


Top
   
PostPosted: Thu Jul 19, 2012 10:36 pm 
Offline
User avatar

Joined: Sat Aug 29, 2009 4:30 pm
Posts: 1906
Also to be considered: What is "a significant difference in performance" ?
Bike races are typically not uphill time trials. So the difference of a few seconds or 10 yards can be the difference between "being in the lead pack" and "dropped", which typically translates into an enormous difference in final time and placing.

So no one is claiming that a light bike makes up for poor fitness, but a light bike can contribute to a significant difference in performance.

I would suspect that nearly everyone who actually races would have had the experience of being only one or two bike lengths behind a group at a critical point in the race, yet just be unable to close that last gap no matter how hard you try. Since you are already as fit as you are going to be at that point, I would be delighted to have 1.5 kg less bike to have to accelerate. :)

Of course if you don't race, and just time trial up hills, you would never notice the small difference weight makes and it would be swamped out by a lot of other variables. So it could also be said that it DOESN'T make a significant difference to performance.


Top
   
PostPosted: Thu Jul 19, 2012 11:11 pm 
Offline
User avatar

Joined: Sun Dec 28, 2008 10:15 pm
Posts: 1500
Location: Hungary
I had to race my steel winter bike in the spring, as my carbon bike was not ready yet.
It's around 4kgs heavier. I was terrible. Now I have my carbon bike, with some aero wheels and I'm flying.
Obviously it's the bike. ;)


Top
   
PostPosted: Fri Jul 20, 2012 12:35 am 
Offline

Joined: Sun Jul 10, 2011 9:03 am
Posts: 292
You can do 'what if' calcs here: http://www.analyticcycling.com/

1 kg makes 8 sec difference in 2.25km at 9% gradient.
Not much but significant in competition.

_________________
r o y g b i v


Top
   
PostPosted: Fri Jul 20, 2012 2:15 am 
Offline
User avatar

Joined: Wed Sep 26, 2007 1:57 pm
Posts: 7897
Location: San Francisco, CA
Rick wrote:
I would suspect that nearly everyone who actually races would have had the experience of being only one or two bike lengths behind a group at a critical point in the race, yet just be unable to close that last gap no matter how hard you try. Since you are already as fit as you are going to be at that point, I would be delighted to have 1.5 kg less bike to have to accelerate. :)
\

Indeed. I love the Team Sky "marginal differences" philosophy. It's what drives the philosophy of this forum. "Every gram counts".

But there's a difference between how a frame feels and what it actually does. For example a heavier, stiffer frame may feel like it's climbing faster, yet be slower. Perception is a very poor measure of actual speed.

_________________
http://djconnel.blogspot.com/
Fuji SL/1


Top
   
PostPosted: Fri Jul 20, 2012 9:44 am 
Offline

Joined: Mon Mar 19, 2012 3:31 pm
Posts: 459
ave wrote:
I had to race my steel winter bike in the spring, as my carbon bike was not ready yet.
It's around 4kgs heavier. I was terrible. Now I have my carbon bike, with some aero wheels and I'm flying.
Obviously it's the bike. ;)


I had my doesn't fit me alu bike in the winter, as my lightweight steel bike wasn't ready, it's around 500g's lighter, and now i'm flying.


Top
   
PostPosted: Fri Jul 20, 2012 9:57 am 
Offline

Joined: Tue Apr 12, 2011 8:08 am
Posts: 2290
Location: Pedal Square
On top of all the advantages already mentioned, it's easier to take a light bike up and down the roof rack. :beerchug:

_________________
Bikes: Raw Ti, 650b flatbar CX


Top
   
PostPosted: Fri Jul 20, 2012 12:09 pm 
Offline

Joined: Tue Dec 27, 2011 2:19 pm
Posts: 659
nope not at all don't believe the hype!
:beerchug:

I would be more concerned about stiffness, the less flex in the frame, the more juice goes into pushing you uphill.


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 41 posts ]  Go to page 1 2 3 Next

   Similar Topics   Author   Replies   Views   Last post 
There are no new unread posts for this topic. Are my hairline cracked or broken carbon fibre handlebars broken or useable? Can they be easily repaired?

in Road

ponyopo

8

625

Sat Jul 30, 2016 5:56 am

mpulsiv View the latest post

There are no new unread posts for this topic. Cannondale Supersix Hill Climb project

[ Go to page: 1 2 3 4 ]

in Introduce Yourself / Gallery - Please use metric weights.

garethgareth

52

7740

Thu Apr 07, 2016 7:12 am

jooo View the latest post

There are no new unread posts for this topic. Richard Bussell's Hill Climb Bike (Giant Track, <6kg)

[ Go to page: 1 2 ]

in Road

jgadd

24

2526

Fri Oct 30, 2015 12:32 am

euan View the latest post

There are no new unread posts for this topic. TT Frames

in Road

Enda Marron

3

383

Sat May 21, 2016 3:44 am

Nefarious86 View the latest post

There are no new unread posts for this topic. Best Aluminum Frames out

[ Go to page: 1 2 3 4 ]

in Road

Bely

59

5322

Mon May 23, 2016 11:01 pm

Tinea Pedis View the latest post


All times are UTC+01:00


Who is online

Users browsing this forum: Baidu [Spider], Rondje and 6 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