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  [ 42 posts ] 
Go to page 1, 2, 3  Next
Author Message
PostPosted: Thu Oct 25, 2012 3:20 pm 
Offline

Joined: Wed Jan 18, 2012 4:23 pm
Posts: 428
Location: Midlands, United Kingdom
Right, finally decided that I really can survive on just one ring so will be going 1x9.

I currently run a bash as my local rides involve quite a lot of logs and the chainwheel often gets a whack on the way over.

My Daughter runs 1x9 using the bash and an N-gear jump stop, however the chain used to come off with any backpedaling (easy to say don't do it, less easy to always not do it!).

So I was looking at a kids bike the other day that was 1x5 and to act as a chain guide it has a disc on either side of the chainring, Brompton folders use similar.

So my grand plan is this....single speed sepcific chainring (E13 just ordered) and a carbon fibre disc mounted to the granny tabs just like the Brompton and kiddies BSO, at a rough calculation a 2mm thick (Thanks to Stephen at fribrelyte who reckons my 1.5mm suggestion wouldn't be stiff enough, Stephen estimates he could produce them for somewhere around the £35 mark if anyone wants to take up my idea) inner ring will weigh about 35g along with circa 10g for the bolts (I may be able to get some lighter ones of course), combined with my current bash (82g) I think that if it works (it works on the Bromptons - forawrads and back pedaling!) it will be a very light and secure chainguide for my purpses (XC to moderate trail usage), ultimately a CF bash (circa 4mm perhaps) would save even more weight.

For now I've found a cheap source of some 2mm thick CF sheet so will be cobbling up my own, if it works then I may well get Stephen to make me something neater.

So opinions/suggestions?

_________________
Impoverished weight weenie wanna-be!
Budget 26" HT build viewtopic.php?f=10&t=110956


Top
 Profile  
 
PostPosted: Thu Oct 25, 2012 7:14 pm 
Offline

Joined: Wed Oct 13, 2010 7:20 pm
Posts: 67
Location: Ireland
I run a single speed chainring and a e-13 chainguide on my XC bike.

http://www.chainreactioncycles.com/Mode ... elID=28730

http://www.chainreactioncycles.com/Mode ... elID=87855

Never had the chain come since using the above combo.


Top
 Profile  
 
Posted: Thu Oct 25, 2012 7:14 pm 


Top
  
 
PostPosted: Thu Oct 25, 2012 9:04 pm 
Offline

Joined: Mon Nov 17, 2008 10:20 pm
Posts: 199
Location: Up North
If I read the OP post, the issue isn't about losing the chain but more so the need for a bash guard/chain retention device. I run 1 X 10 with e13 guide ring up from and e13 retention device and it works well. With a new XTR clutch type rear derailleur I could possibly dump the chainkeeper.

You are looking for something that would function as a bash guard and also to retain the chain and also be WW? Personally I don't need a bash guard but good luck with rigging up yours. Sounds like a good idea.


Top
 Profile  
 
PostPosted: Thu Oct 25, 2012 10:03 pm 
Offline

Joined: Wed Oct 13, 2010 7:20 pm
Posts: 67
Location: Ireland
Oh sorry about that.Well you have ordered youre outer bash ring.What about this for the inner chainguide,it bolts onto the granny ring bolt holes.
http://www.raidiumchainguide.co.uk/index.html


Top
 Profile  
 
PostPosted: Fri Oct 26, 2012 6:01 am 
Offline

Joined: Wed Jan 18, 2012 4:23 pm
Posts: 428
Location: Midlands, United Kingdom
TheRookie wrote:
I currently run a bash

Thanks for the link, validates my idea, I'd not heard of someone making one before!

CF would be the more sensible choice though!

_________________
Impoverished weight weenie wanna-be!
Budget 26" HT build viewtopic.php?f=10&t=110956


Top
 Profile  
 
PostPosted: Fri Oct 26, 2012 3:05 pm 
Offline

Joined: Sun Jan 22, 2006 10:45 am
Posts: 119
i am also considering a change from 3x9 to 1x9 since i do not use the 2 smaller chainrings. i did some research, and am leaning towards the Paul's chain keeper. it is easy to install and adjust (for me at least, i am keeping the biggest chainring) and looks extremely light weight!

btw, what sort of riding are u doing? i did alot of research, it seems that the pauls is not recommended if you are jumping/XC riding. suits me more as im on the road most of the time.

Edit: sorry din read fully about your style of rides! perhaps this pauls might not be suitable for u :lol:


Top
 Profile  
 
PostPosted: Fri Oct 26, 2012 3:33 pm 
Offline

Joined: Wed Jan 18, 2012 4:23 pm
Posts: 428
Location: Midlands, United Kingdom
As I certainly wouldn't run just the big ring, I'd say not!

_________________
Impoverished weight weenie wanna-be!
Budget 26" HT build viewtopic.php?f=10&t=110956


Top
 Profile  
 
PostPosted: Sat Oct 27, 2012 1:34 pm 
Offline

Joined: Sun Jan 23, 2011 2:30 pm
Posts: 12
I switched to a 1X9 a year or so ago and use a 32T chainring. I use an E13 chain retention device similar to the one in the link and have had no issues. Used to run a bash guard but have not had a problem without it.


Top
 Profile  
 
PostPosted: Sat Oct 27, 2012 6:25 pm 
Offline

Joined: Wed Jan 18, 2012 4:23 pm
Posts: 428
Location: Midlands, United Kingdom
yakstone wrote:
I switched to a 1X9 a year or so ago and use a 32T chainring. I use an E13 chain retention device similar to the one in the link and have had no issues. Used to run a bash guard but have not had a problem without it.

Thanks, but as I've made clear I need to run a bash, so the Raidium (or similar) makes a lot of sense.....

_________________
Impoverished weight weenie wanna-be!
Budget 26" HT build viewtopic.php?f=10&t=110956


Top
 Profile  
 
PostPosted: Sat Oct 27, 2012 11:51 pm 
Offline
in the industry
User avatar

Joined: Thu May 29, 2008 12:22 am
Posts: 597
hillrider wrote:
Oh sorry about that.Well you have ordered youre outer bash ring.What about this for the inner chainguide,it bolts onto the granny ring bolt holes.
http://www.raidiumchainguide.co.uk/index.html" onclick="window.open(this.href);return false;


I'm a little sceptical about that website. The contact address is a house as far as I can tell, not a business premises?

I like the E13 type chainguide idea. We used to manufacture a downhill device in carbon for a company years ago and recently a friend of our machinist has been asking about one. Unfortunately we only made the carbon parts and none of the plastic runner or rollers but we'll investigate it further. With the chain devices like that, don't they have to be bolted to the three holes around the bottom bracket that seem to be on all downhill bikes? I'm afraid my downhill expertise isn't that great, but trying to learn!! :D

The other option I had been thinking of is a single ring carbon chainring with chain guides that bolted directly to the rim of the chainring itself, with spacers to allow clearance of course. I manufactured one as a custom project but regular work has meant that idea too a bit of a back burner.


Top
 Profile  
 
PostPosted: Sun Oct 28, 2012 6:39 am 
Offline

Joined: Wed Jan 18, 2012 4:23 pm
Posts: 428
Location: Midlands, United Kingdom
Stephen, that last idea is sold in Australia as the widgit (in alloy), OK for someone who wants the lot, but will be more expensive than just using standard parts.

Don't have an issue with a private seller,probably collisions local suppliers to make them!

_________________
Impoverished weight weenie wanna-be!
Budget 26" HT build viewtopic.php?f=10&t=110956


Top
 Profile  
 
PostPosted: Sun Oct 28, 2012 11:24 am 
Offline
in the industry
User avatar

Joined: Thu May 29, 2008 12:22 am
Posts: 597
That widgit looks good to be honest, similar to what I've done in the past but not identical. The price doesn't look too bad either, I don't know what that converts to in english pounds sterling.


Top
 Profile  
 
PostPosted: Sun Oct 28, 2012 10:21 pm 
Offline

Joined: Wed Jan 18, 2012 4:23 pm
Posts: 428
Location: Midlands, United Kingdom
About £60......

The advantage of using the granny tabs is you use off the shelf ring and bash, it's just the inner guide that is 'sort of unique'.

Typo in above post (or phone spell correct) should have read collusion, the price isn't bad.

_________________
Impoverished weight weenie wanna-be!
Budget 26" HT build viewtopic.php?f=10&t=110956


Top
 Profile  
 
PostPosted: Sun Oct 28, 2012 11:27 pm 
Offline
in the industry
User avatar

Joined: Thu May 29, 2008 12:22 am
Posts: 597
£60 isn't bad for a chainring and two chainguides and it's neater than a triple crank setup. Of course if you already have the triple crank that may sway the decision. Then of course, it's not carbon fibre :wink:


Top
 Profile  
 
Posted: Sun Oct 28, 2012 11:27 pm 


Top
  
 
PostPosted: Mon Oct 29, 2012 12:41 am 
Offline

Joined: Tue Mar 20, 2012 3:24 am
Posts: 30
BBG and Blackspire both makes chainguards that mount off the granny ring tabs.

You could always get a second narrow guard like a Truvativ AM guard(also available in carbon) and run that on the inside with long MRP chainring bolts for their older poly guards.

I run 1x10 and we have a ton of log overs as well so a bash is required.
I use:
MRP G2 Light on my Sunday
Gamut BB mount on my Blur TRc
Carbocage on my 6point(available with an integrated bash)
LG1+ on my Dreamliner
SRS on my Chameleon.

All are good systems with chainring protection.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 42 posts ] 
Go to page 1, 2, 3  Next


Who is online

Users browsing this forum: No registered users and 10 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. Wanted: Opinions of Campy mech users who tried electronic

[ Go to page: 1, 2, 3 ]

in Road

maggierose

39

2027

Fri Apr 18, 2014 6:24 pm

Geoff View the latest post

There are no new unread posts for this topic. Rare stem, any idea wich brand

in Road

aerobikewheels

3

510

Mon Aug 25, 2014 6:56 pm

TheRedMantra View the latest post

There are no new unread posts for this topic. Various stuff wanted to buy or swap

in Wanted

BeeBee30

0

133

Tue Jul 08, 2014 8:41 am

BeeBee30 View the latest post

There are no new unread posts for this topic. Wanted: lightning crankset

in Wanted

Bantamben

0

73

Tue Jul 15, 2014 5:22 pm

Bantamben View the latest post

There are no new unread posts for this topic. Wanted lightning BCD 110 spyder

in Wanted

bazmac

0

52

Sun Jun 22, 2014 9:07 pm

bazmac View the latest post


It is currently Thu Oct 02, 2014 1:57 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