Help & FAQs    Search BCF    Members    Groups    Events Calendar
Resend my activation email : Register : Log in 
BCF: Bike Chat Forums


Chainwheels on Team Sky bikes

 Reply to topic
Bike Chat Forums Index -> The Cycling Forum
View previous topic : View next topic  
Author Message

Old Git Racing
World Chat Champion



Joined: 08 Aug 2009
Karma :
PostPosted: 18:44 - 29 Jun 2013    Post subject: Chainwheels on Team Sky bikes Reply with quote
Why aren't they round? Sure I've seen some that are sort of eliptical, what's the reason?

OGR
____________________
2022 Tiger Sport 660 2019 Street Twin 2003 K3 gixxer 1000 1998 Srad 600 track hack
 Back to top
View user's profile Send private message You must be logged in to rate posts

Hetzer
Super Spammer



Joined: 19 Feb 2007
Karma :
PostPosted: 18:47 - 29 Jun 2013    Post subject: Reply with quote
Wut the fuck are you talkin' 'bout, duuude.
____________________
"There's the horizon! Ride hard, ride fast and cut down all who stand in your way!"
 Back to top
View user's profile Send private message You must be logged in to rate posts

Aff
World Chat Champion



Joined: 05 May 2011
Karma :
PostPosted: 18:49 - 29 Jun 2013    Post subject: Reply with quote
It's called an Osymetric Chainring. It effectively down gears the bike at the weakest point of your pedal stroke (12 and 6 oclock) and up gears it on the strongest point (3 and 9 oclock).
____________________
Current Bikes:Honda 929RR Fireblade, Honda CD200 Benly (Project), Stomp Z2 140
Electric Bike Project
 Back to top
View user's profile Send private message You must be logged in to rate posts

stinkwheel
Bovine Proctologist



Joined: 12 Jul 2004
Karma :
PostPosted: 18:58 - 29 Jun 2013    Post subject: Reply with quote
It's nothing new.

https://sheldonbrown.com/biopace.html
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
 Back to top
View user's profile Send private message You must be logged in to rate posts

Hetzer
Super Spammer



Joined: 19 Feb 2007
Karma :
PostPosted: 19:05 - 29 Jun 2013    Post subject: Reply with quote
WTF! I actually started to read that SHITE. FUCK OFF! Middle Finger
____________________
"There's the horizon! Ride hard, ride fast and cut down all who stand in your way!"
 Back to top
View user's profile Send private message You must be logged in to rate posts

stinkwheel
Bovine Proctologist



Joined: 12 Jul 2004
Karma :
PostPosted: 19:10 - 29 Jun 2013    Post subject: Reply with quote
Hetzer wrote:
WTF! I actually started to read that SHITE. FUCK OFF! Middle Finger


You seem very angry today.

You are aware you're posting in the cycling forum yes?

Has the Stella kicked-in that hard already?
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.”
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
 Back to top
View user's profile Send private message You must be logged in to rate posts

Tungtvann
World Chat Champion



Joined: 07 Dec 2012
Karma :
PostPosted: 19:12 - 29 Jun 2013    Post subject: Reply with quote
Hetzer wrote:
WTF! I actually started to read that SHITE. FUCK OFF! Middle Finger

https://sheldonbrown.com/images/scb_eagle.jpeg
 Back to top
View user's profile Send private message You must be logged in to rate posts

Hetzer
Super Spammer



Joined: 19 Feb 2007
Karma :
PostPosted: 19:31 - 29 Jun 2013    Post subject: Reply with quote
Holy shit. There is...a...cycling forum on BCF. Da FUK! Shocked
____________________
"There's the horizon! Ride hard, ride fast and cut down all who stand in your way!"
 Back to top
View user's profile Send private message You must be logged in to rate posts

Hetzer
Super Spammer



Joined: 19 Feb 2007
Karma :
PostPosted: 19:32 - 29 Jun 2013    Post subject: Reply with quote
tch.
____________________
"There's the horizon! Ride hard, ride fast and cut down all who stand in your way!"

Last edited by Hetzer on 09:24 - 30 Jun 2013; edited 1 time in total
 Back to top
View user's profile Send private message You must be logged in to rate posts

Hetzer
Super Spammer



Joined: 19 Feb 2007
Karma :
PostPosted: 19:33 - 29 Jun 2013    Post subject: Reply with quote
That'll be Korn desperately trying to whore as much dollar as he can. Gotta get that cycling dollar (Bill Hicks accent). Rolling Eyes
____________________
"There's the horizon! Ride hard, ride fast and cut down all who stand in your way!"
 Back to top
View user's profile Send private message You must be logged in to rate posts

The Shaggy D.A.
Super Spammer



Joined: 12 Sep 2008
Karma :
PostPosted: 20:47 - 29 Jun 2013    Post subject: Reply with quote
Hetzer wrote:
Holy shit. There is...a...cycling forum on BCF. Da FUK! Shocked


There's a Welsh section too. WHORES!
____________________
Chances are quite high you are not in my Monkeysphere, and I don't care about you. Don't take it personally.
Currently : Royal Enfield 350 Meteor
Previously : CB100N > CB250RS > XJ900F > GT550 > GPZ750R/1000RX > AJS M16 > R100RT > Bullet 500 > CB500 > LS650P > Bullet Electra X & YBR125 > Bullet 350 "Superstar" & YBR125 Custom > Royal Enfield Classic 500 Despatch Limited Edition (28 of 200) & CB Two-Fifty Nighthawk > ER5
 Back to top
View user's profile Send private message You must be logged in to rate posts

Wafer_Thin_Ham
Super Spammer



Joined: 18 Nov 2005
Karma :
PostPosted: 20:55 - 29 Jun 2013    Post subject: Reply with quote
Aff wrote:
It's called an Osymetric Chainring. It effectively down gears the bike at the weakest point of your pedal stroke (12 and 6 oclock) and up gears it on the strongest point (3 and 9 oclock).


Interestingly Wiggo sacked his off, and went back to normal ones on his TT bike. Froome still uses these weird ones though. To each their own.
____________________
My Flickr
 Back to top
View user's profile Send private message You must be logged in to rate posts

D O G
World Chat Champion



Joined: 18 Dec 2006
Karma :
PostPosted: 21:07 - 29 Jun 2013    Post subject: Reply with quote
Meh. Have been kicking about for years, they seem to be back in fashion recently.
 Back to top
View user's profile Send private message You must be logged in to rate posts

Tungtvann
World Chat Champion



Joined: 07 Dec 2012
Karma :
PostPosted: 21:45 - 29 Jun 2013    Post subject: Reply with quote
No proven benefit whilst cycling.
 Back to top
View user's profile Send private message You must be logged in to rate posts

acidstrato
Two Stroke Sniffer



Joined: 07 Oct 2012
Karma :
PostPosted: 09:17 - 30 Jun 2013    Post subject: Reply with quote
rotor Q rings is another option, not as dramatic as the osymetric but still feel odd for the first few 100km use and "supposedly" remove that "deadspot"

I use standard chainrings and Qrings

do they work? I dunno, certainly feels weird swapping between the two tho
 Back to top
View user's profile Send private message You must be logged in to rate posts

Tarmacsurfer
World Chat Champion



Joined: 29 Jun 2004
Karma :
PostPosted: 11:38 - 03 Jul 2013    Post subject: Reply with quote
I used to use a biopace ring on the outer, found it to be quite good. Noticeably less tiring.
____________________
I'm immortal. Well, so far.
 Back to top
View user's profile Send private message You must be logged in to rate posts
Old Thread Alert!

The last post was made 12 years, 20 days ago. Instead of replying here, would creating a new thread be more useful?
  Display posts from previous:   
This page may contain affiliate links, which means we may earn a small commission if a visitor clicks through and makes a purchase. By clicking on an affiliate link, you accept that third-party cookies will be set.

Post new topic   Reply to topic    Bike Chat Forums Index -> The Cycling Forum All times are GMT
Page 1 of 1

 
 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 vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

Read the Terms of Use! - Powered by phpBB © phpBB Group
 
Debug Mode: ON - Server: birks (www) - Page Generation Time: 0.07 Sec - Server Load: 2.09 - MySQL Queries: 13 - Page Size: 88.41 Kb