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




Post new topic Reply to topic  [ 20 posts ] 
Go to page 1, 2  Next
Author Message
PostPosted: Sat Jan 03, 2015 8:59 pm 
Offline
User avatar

Joined: Mon Dec 31, 2012 8:31 pm
Posts: 18
Hi,

Sorry if this has been discussed before.

Just wondering whether it's possible to convert a road bike which has a Dura-Ace 9000 chainset to have just one chainring? Really wanting to set the bike up to have no front mech so in an ideal world I'm guessing the chainring would have to be like the drop stop ones I've got on my XTR based 1x11 mountain bike. I never use the front mech whilst racing so I'm just carrying around extra weight and more things to go wrong

If a new chainring for the Dura-Ace 9000 chainset isn't available, is there another make of chainset available off the shelf with a single ring or one which could be easily converted? My bottom brack is a Dura-Ace BB92-41B which takes standard 24mm Shimano cranks

_________________
Regards

Portia Baines


Top
 Profile  
 
Posted: Sat Jan 03, 2015 8:59 pm 


Top
  
 
PostPosted: Sun Jan 04, 2015 2:15 am 
Offline

Joined: Sun Sep 07, 2014 4:16 am
Posts: 28
You can search for 1x10 and would come up with more results.

I was thinking this awhile back just haven't done it.

I don't race so I don't need the big gear I was gonna stick a race face narrow wide up front maybe 42t 130bcd.

I have a 12-27 in back but might try and go bigger like 11-32 but may need a new rear derailleur.


Sent from my iPhone using Tapatalk


Top
 Profile  
 
PostPosted: Sun Jan 04, 2015 6:49 am 
Offline

Joined: Wed Jan 22, 2014 11:48 am
Posts: 534
If oval is ok for you, Doval might be one of the few options you have for 9000

http://www.ebay.com/itm/DOVAL-Chainring ... 1477134860

_________________
Carbon is real.


Top
 Profile  
 
PostPosted: Sun Jan 04, 2015 10:18 am 
Offline

Joined: Mon May 07, 2007 1:06 pm
Posts: 170
Location: UK
My set up is 1 X 11 with 105 (compact chainset for the 110BCD) works well, 40 tooth on the front. This is only for training as in a RR you would get binned unless you have a 53.

Image

_________________
"I could have done this job myself in five minutes, but as things turned out I had to spend two days trying to find out why it had taken someone else three weeks to do it wrong."


Top
 Profile  
 
PostPosted: Sun Jan 04, 2015 5:32 pm 
Offline

Joined: Sun Sep 07, 2014 4:16 am
Posts: 28
How big is you cassette?



Sent from my iPhone using Tapatalk


Top
 Profile  
 
PostPosted: Sun Jan 04, 2015 8:19 pm 
Offline

Joined: Mon May 07, 2007 1:06 pm
Posts: 170
Location: UK
28-11

_________________
"I could have done this job myself in five minutes, but as things turned out I had to spend two days trying to find out why it had taken someone else three weeks to do it wrong."


Top
 Profile  
 
PostPosted: Sun Jan 04, 2015 9:29 pm 
Offline

Joined: Mon May 16, 2011 8:14 pm
Posts: 351
I can't think of any reason why it wouldn't be very easily possible. Just take the inner chainring and derailleur off! Unlike C/X or mtn, your not going to be jumping, flying over bumps, or in thick mud - so chain slap, and all other reasons for your chain to derail are non-existent. I mean, has your chain ever dropped off the big ring in the front while road riding when you weren't shifting the front derailleur? My guess is no.

So, just decide on how many teeth you want to have in a single ring setup, and put that chainring on your crank. No biggie. If your saying that you never shift your front derailleur during a race currently, sounds like you're all set with the ring you need. My commuter bike runs a 1x10 setup, having just removed the front derailleur and inner chainring.. never had an issue.

Am i missing something here?


Top
 Profile  
 
PostPosted: Sun Jan 04, 2015 10:40 pm 
Offline
in the industry

Joined: Fri Dec 07, 2012 8:34 pm
Posts: 195
Location: South Florida
not necessarily the case VTBike. I've seen people with a single, regular tooth ring on the front riding some of the smoothest roads possible and still drop the chain.

If you were going to use a normal tooth profile ring, I would at least get some sort of small chain catcher like this one from Origin-8, for example.

http://www.jensonusa.com/ORIGIN8-Torqli ... hain-Guide

_________________
"Ride till I die, well not really I'm too young to die"

The New: BH http://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=117760
The Old: Trek http://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=110051


Top
 Profile  
 
PostPosted: Mon Jan 05, 2015 2:50 am 
Offline

Joined: Mon May 16, 2011 8:14 pm
Posts: 351
wpccrunner wrote:
not necessarily the case VTBike. I've seen people with a single, regular tooth ring on the front riding some of the smoothest roads possible and still drop the chain.

If you were going to use a normal tooth profile ring, I would at least get some sort of small chain catcher like this one from Origin-8, for example.

http://www.jensonusa.com/ORIGIN8-Torqli ... hain-Guide


Got it.. yeah, I can't say I have direct experience w/ a single ring on my road bike. I suppose i have found myself riding a rough patch of road where I could picture a chain dropping.


Top
 Profile  
 
PostPosted: Mon Jan 05, 2015 7:45 am 
Offline

Joined: Mon May 07, 2007 1:06 pm
Posts: 170
Location: UK
The chainring Im running in the picture is a narrow wide RaceFace which "holds" the chain, the rear mech is a standard one and not a "clutch mech"

I have had no problems at all and I often jump up and down kerbs etc.

_________________
"I could have done this job myself in five minutes, but as things turned out I had to spend two days trying to find out why it had taken someone else three weeks to do it wrong."


Top
 Profile  
 
PostPosted: Mon Jan 05, 2015 9:29 am 
Offline

Joined: Sun May 25, 2014 4:57 am
Posts: 184
Whats the solution for no cable in the LH lever?

_________________
Using Tapatalk


Top
 Profile  
 
PostPosted: Mon Jan 05, 2015 9:55 am 
Offline

Joined: Wed Jan 22, 2014 11:48 am
Posts: 534
Guys, DA9000 has a weird bolt pattern.

_________________
Carbon is real.


Top
 Profile  
 
PostPosted: Mon Jan 05, 2015 10:20 am 
Offline

Joined: Thu Mar 08, 2012 11:43 pm
Posts: 831
VTBike wrote:
I mean, has your chain ever dropped off the big ring in the front while road riding when you weren't shifting the front derailleur? My guess is no.

Am i missing something here?


Ask David Millar.

The front mech acts as a chain guide, which is part of the reason you never drop a chain without shifting when you're using one.


Top
 Profile  
 
PostPosted: Mon Jan 05, 2015 10:41 am 
Offline
User avatar

Joined: Thu Aug 25, 2005 7:09 pm
Posts: 1230
Location: In the industry
You mean this?

Notice the chain tooth pattern to avoid dropping. Plus improved design over Sram's wide-narrow ring to reduce friction.


Attachments:
Falco Single Ring 3a.jpg
Falco Single Ring 3a.jpg [ 103.28 KiB | Viewed 669 times ]
FALCO single ring a.jpg
FALCO single ring a.jpg [ 108.51 KiB | Viewed 669 times ]

_________________
Fast falcons: http://www.youtube.com/watch?v=j3mTPEuFcWk" onclick="window.open(this.href);return false;
www.falcobike.com
Facebook: falcobikeglobal
Top
 Profile  
 
Posted: Mon Jan 05, 2015 10:41 am 


Top
  
 
PostPosted: Mon Jan 05, 2015 11:05 am 
Offline

Joined: Sun May 25, 2014 4:57 am
Posts: 184
Maybe I'm just overly protective of my nutts/teath, but I'd want something like this due to the lower chain tension on the shorter cage mechs. Adapt something WW from carbon and use a standard 9000 outer or a 6800 CX crank for smaller than a 50 tooth. The Braze on Mount is there anyway...

Image

Non factory ring on a 9000 crank with these and a backing spacer to mimic the inner ring

Image

_________________
Using Tapatalk


Last edited by Nefarious86 on Mon Jan 05, 2015 11:22 am, edited 3 times in total.

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


Who is online

Users browsing this forum: Bing [Bot], Burgunder, fromtrektocolnago, sanrensho and 39 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. Dura Ace 9000 Chainring Sizes

in Road

JimmyRingo

12

1923

Wed Jul 30, 2014 5:29 pm

06SpiceRed View the latest post

There are no new unread posts for this topic. Biggest possible chainring on Dura Ace 9000 crankset?

in Road

Multebear

4

356

Mon May 04, 2015 3:30 pm

climbandpunishment View the latest post

There are no new unread posts for this topic. single front chainring

[ Go to page: 1, 2 ]

in Road

eliflap-scalpel

18

1412

Sat Aug 23, 2014 1:02 pm

mjduct View the latest post

There are no new unread posts for this topic. SRM 9000 Chainring Bolt Torque

in Road

ddj5300

9

351

Sat Apr 11, 2015 11:01 am

goodboyr View the latest post

There are no new unread posts for this topic. BB386 -> Dura Ace 9000 crank

in Road

JohanSten

9

1274

Fri Sep 26, 2014 4:06 pm

highdraw View the latest post


It is currently Sat May 30, 2015 11:43 pm

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