Retrobike Forum Index

It is currently Sat Dec 03, 2016 8:19 am

* Login   * Register * Search  * FAQ



Post new topic Reply to topic  [ 34 posts ]  Go to page Previous  1, 2, 3, 4  Next
Author Message
 Post subject:
PostPosted: Fri Jan 04, 2013 5:40 pm 
Retro Guru
User avatar

Joined: Tue Jul 20, 2010 8:22 am
Posts: 2075
Location: Warks
I don't see any difference in my sportive times whether I'm on my 'knitted soot' Cervelo RS with a carbon campy group or an old steelie with DT shifters; in fact on the Colnago with SL and 39 / 26 I climb better than anything else except the most savage gradients.
When you think that a 12 stone rider (168lb) plus a 20lb bike, total 188 lb, the difference in TOTAL weight between types is a tiny percentage of the overall weight, and can be blurred even more by whether you are riding with 2 full 750ml bottles, carrying a hefty multitool, or didn't manage to evacuate the previous night's curry before setting off! :lol:


Top
 Profile  
 
 Post subject:
PostPosted: Fri Jan 04, 2013 9:40 pm 
Dirt Disciple
User avatar

Joined: Tue Sep 06, 2011 8:39 pm
Posts: 95
Location: Wiltshire, UK
So.. at the risk of looking geek-like, all of my bikes are weighed on pretty accurate digital scales, old and new.

I always raise an eyebrow when I hear someone talk of `17 lb' race bike in old cycling footage. There's a piece in ITV's 1980 Tour de France coverage that does exactly that when describing a TI Raleigh team bike. Perhaps, with ultra light tubs, copious drilling and a Huret Jubilee rear mech...

My old (mid 80s or earlier) steel bikes range from 19 to 20.5 lbs. I run fairly heavy Vittoria Rally tubulars. The lighter bikes have alloy freewheels and titanium bottom bracket axles - these bikes have Campagnolo Record or Super Record group sets.

I have one bike that I've tried to make light (without drilling stuff) - the aluminium Alan - that's still over 18.5 lbs with light rims, titanium axle and alloy freewheel.

My carbon Ciocc with modern Campagnolo Super Record is 7kgs or about 15.4 lbs, and yes, you can really notice the difference. I's possible to buy a 5.5kg (12 lbs) road bike if you have budget. This is in the ball park of Merckx's '72 hour record bike (astonishingly light for its period), but of course it comes with 22 gears, brakes etc..

It's a whole other discussion, but it's worth noting that bike design is more focused on aero / ride comfort these days, as the 6.8 kg UCI limit renders really light bikes pointless.

The real difference on the road for me is the weight distribution. An old school steel frame is not actually that heavy, but the forks are. Once the forks are made carbon, a whole load of weight disappears from the front. After 30 years of man-handling steel bikes up hills, the carbon bike has shown me that my technique is poor - I'm constantly pulling wheelies on steeper inclines, and actually flipped over backwards on a 20% grade!

One more thing - top line race bikes (still predominantly Campagnolo equipped) generally got heavier towards the end of the 80s/early 90s. For example Columbus SLX tubes are heavier than SL, and the new generation of Campagnolo components were heavier - particularly the chain sets and brakes (Delta, Dual Pivot). First there's the functional breakthrough, then it takes a while to match it with light weight.

I take it everyone's seen:

http://weightweenies.starbike.com/

?

Paul


Top
 Profile  
 
 Post subject: Can I Weigh In?
PostPosted: Sat Jan 05, 2013 1:32 pm 
Dirt Disciple

Joined: Mon Mar 22, 2010 10:41 am
Posts: 70
An interesting thread this.
I've always been suspicious of these figures banded around for bike weights, so here are my findings:
Firstly I am using scales that I have checked variously 1) Weighed container dry on both my scales and my luggage ones which seem accurate. Both readings identical. Added exactly 6 litres of water and the additional weight was 6kg +/- 10g. 2)I have a set of brass chemist's weights which are stamped by some govt department and their total was 2.85kg - again bang on to within a few grammes. 3) Weighed my friend's bike on both my scales and his scales and again both are spot on. 4) Most recently had a pair of wheels made by Pete Matthews and according to my post office cert scales at work they weigh 1,427g on my scales 1.43kg. So without being super scientific pretty spot on. Agreed?
Here are the results over the years:-
The lightest 6.88kg C50 Record half Ti cassette full Ti pedals Hyperons etc.
PDM Concorde Record Open Pro and as you see it 9.45kg
Colnago Master X lite with Record tubs etc 8.20kg
753 Peugeot Chorus 9.15kg
Willier Isoard Chorus 11 Neutron regular 7.93
Cannondale Super Six Ultegra cheapish Kysiriums 8.2kg
Somec Falcon 1.1 Dura Ace 7.85kg
All the bikes are those in the pictures and they are weighed pedals, cages etc on - ready to go.


Attachments:
Picture 124.jpg
Picture 124.jpg [ 322.49 KiB | Viewed 670 times ]
C50.jpg
C50.jpg [ 115.64 KiB | Viewed 670 times ]
Top
 Profile  
 
 Post subject:
PostPosted: Sat Jan 05, 2013 1:40 pm 
Dirt Disciple

Joined: Mon Mar 22, 2010 10:41 am
Posts: 70
More pics to go with above post


Attachments:
SOMEC-2.jpg
SOMEC-2.jpg [ 136.76 KiB | Viewed 666 times ]
Cannondale.jpg
Cannondale.jpg [ 372.67 KiB | Viewed 666 times ]
Top
 Profile  
 
 Post subject:
PostPosted: Sat Jan 05, 2013 2:15 pm 
Old School Hero
User avatar

Joined: Sat Jun 26, 2010 4:41 pm
Posts: 188
Location: WORCS
my old master olympic with modern ish campag chorus and campag midrange wheels is around 19lb. I love the ride and it feels quick enough after the mtb and crossbike.
I am hoping to race it this year and may upgrade the old square taper chainset for something lighter and stiffer but I suspect stiffness is more of an issue to performance than overall weight as long as wheels and tyres are of high quality. I would think the skinny tubes offer an aerodynamic advantage too as this seems to be the area where all the top brands are concentrating.
Ive toyed with the idea of a modern bike for racing but this would leave the colnago neglected and that would be a waste! Anyway, its about the legs at the end of the day!


Top
 Profile  
 
 Post subject: its not about the bike
PostPosted: Sat Jan 05, 2013 6:18 pm 
gold | rider | rBoTM
gold | rider | rBoTM
User avatar

Joined: Sat Jan 05, 2013 5:06 pm
Posts: 10229
Location: The deep South
If you can't save the weight of a bag of sugar from your own weight , then you must be an elite category racer ( or Pete Doherty) . If you are the former , you will not bat an eyelid flying past when the road heads skywards , and if you are the latter , you wont know know where you left your bike , or even if you have one ! :wink:


Top
 Profile  
 
PostPosted: Sat Jan 05, 2013 7:02 pm 
retrobike rider
retrobike rider
User avatar

Joined: Sun Feb 19, 2012 10:08 am
Posts: 6840
Location: Nth Somerset, UK
Mike Muz 67 wrote:
If you can't save the weight of a bag of sugar from your own weight , then you must be an elite category racer


I'm 53 years old, just over 6' 1" tall and weigh 76Kg's.

The only way I see me losing another kilo is to ride daily, and I think that would somewhat take the pleasure out of cycling, after all riding is supposed to be fun.

No, I'm not an elite racer, although they did ask me that question at the hospital when I dislocated my shoulder back in August :wink:


Top
 Profile  
 
 Post subject:
PostPosted: Sun Jan 06, 2013 9:43 pm 
Retro Guru

Joined: Thu May 03, 2012 7:56 pm
Posts: 264
This thread has made me think. I was looking about today at different things as I'd like to shed some weight from my bike. Considering it is only a 52cm frame, I think it's a bit on the lardy side; tipping the scales at just over 20lbs.

Been looking about today, and for a meagre £17 I could save 135g just on the QR skewers :shock:


Last edited by gregs656 on Mon Jan 07, 2013 12:18 am, edited 1 time in total.

Top
 Profile  
 
 Post subject:
PostPosted: Sun Jan 06, 2013 9:46 pm 
West Midlands AEC
West Midlands AEC
User avatar

Joined: Wed May 14, 2008 11:06 pm
Posts: 6266
Location: Stow on the Wold, Glos
weighed the master today

its 57cm seat tube 54.5 top with ultegra/600 mix group carrying rear sks guard and pump . came in a 22.6lb


Top
 Profile  
 
 Post subject:
PostPosted: Sun Jan 06, 2013 9:57 pm 
retrobike rider
retrobike rider
User avatar

Joined: Sun Feb 19, 2012 10:08 am
Posts: 6840
Location: Nth Somerset, UK
daj wrote:
weighed the master today

its 57cm seat tube 54.5 top with ultegra/600 mix group carrying rear sks guard and pump . came in a 22.6lb


Wow, that's a little heavier than I would have thought.

I rode the Concorde for the first time today, and I've got to say it did not feel like a heavy bike at all, so until I inherit my son's cast off Boardman, I will content myself with my 'not the lightest ever' bike.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 34 posts ]  Go to page Previous  1, 2, 3, 4  Next

All times are UTC [ DST ]


Who is online

Users browsing this forum: Spokesmann and 14 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:  

About Us

Follow Retrobike

Other cool stuff

All content © 2005-2015 Retrobike unless otherwise stated.
Cookies Policy.
bikedeals - the best bike deals in one place
FatCOGS - Fat Chance Owner's Group

Powered by phpBB® Forum Software © phpBB Group