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  [ 12 posts ] 
Author Message
 Post subject: single speed front
PostPosted: Tue Oct 05, 2010 10:48 pm 
Offline

Joined: Wed Sep 15, 2010 4:39 pm
Posts: 3
Location: seattle, wa, usa
Im building my first track bike on a budget and I was wondering what the disadvantages were of running a track single speed 42t crank. I would probably run an 11-32 9spd rear cassette to help make up the difference. This is my first cross season so Im not up to riding as hard as the big guys. Probably stick to cat 4 all season.

This would save me a bit of money not having to buy a deraileur and the crank being 1/3 the price of comparable doubles.

Also how would this affect my chain choice? Would I still run a normal 9spd chain? Is there something Im looking over?

I'm also looking for a fork to fit a K2 enemy frame if anyone has a cheaper(under $50) laying around. 1 1/8 headset and it has a rather long headtube.


Top
 Profile  
 
 Post subject: Re: single speed front
PostPosted: Wed Oct 06, 2010 11:56 am 
Offline

Joined: Sun Nov 19, 2006 10:26 am
Posts: 44
Using a trackring is possible, done so myself with a 10 speed chain. Even 11 speed seems to be possible.
However, the chain won't stick to your ring in bumpy terrain, or when the chain is on the inner or outer cogs, when you don't use a frontderailler or chainguide or chainwatch of some sort to keep the chain in place.
Search the forum for these solutions. And yes, they cost money, but you can't ride CX without some sort of chainguidance in the front.

Have fun building and riding a CX!

_________________
For sale: Colnago Master PRZA frameset 58cm

My other bikes:
CX: Stevens Team Carbon Campagnolo Record 10spd; 2x
MTB: Deng Fu 29" XTR, rigid
SS road: Gazelle Special Reynolds 853 Trapezi


Top
 Profile  
 
 Post subject: Re: single speed front
Posted: Wed Oct 06, 2010 11:56 am 


Top
  
 
 Post subject: Re: single speed front
PostPosted: Fri Oct 22, 2010 2:38 pm 
Offline

Joined: Mon Nov 03, 2008 8:17 pm
Posts: 37
I'm building up a cross bike on a budget this winter too and was considering the same thing - going with a 1x9. My xc race bike is a 2x9 with 44t big ring (29 small) and an 11-28 cassette (although I think I'm going to go with 11-32 for next year). I did 2 cross races on that bike and never needed the small ring. I was considering a 48t chainring with a 11-32 cassette for racing cross (in Nebraska). My main concern is with clearance on the frame I'm considering (Nashbar X found cheap on ebay) but I figure that's a frame-specific issue.

_________________
Pain is inevitable, suffering is optional.


Top
 Profile  
 
 Post subject: Re: single speed front
PostPosted: Fri Oct 22, 2010 4:34 pm 
Offline
User avatar

Joined: Sat Apr 16, 2005 6:08 pm
Posts: 2832
Location: Boulder, Colorado
I see no reason that the 42T wouldn't work, but then you need to sort out what you're going to do for chain retention on the chainrings - if you don't have a guard of some sort plan on stopping a lot to put your chain back on. I use the K-Edge outer guard and their clever single ring cx inner catcher which has a finger that goes over the top of the chain to keep it virtually as secure as double guards. There is a faux front derailleur setup from Paul and some other similar things, but I tend to prefer the guard solution.

A quick thought is that the Rotor 3D crankset may be a good solution for you - you can change the spider to a 144 track bcd when you want and use a regular 130 road setup for cross. Our team has been using them all season and they are a fantastic crankset...

As for your cassette - probably overkill in the range and more likely than not you'll have a hard time finding the 'right' gear. Try something like a 12-27 or 12-28 for starters. On my single ring I have a 40 or 42T and an 11-26 usually.

_________________
___________________________________________________

"Organization is for the simple-minded, the Genius controls the chaos." - Jens


Top
 Profile  
 
 Post subject: Re: single speed front
PostPosted: Fri Oct 22, 2010 6:29 pm 
Offline

Joined: Fri Jul 17, 2009 4:10 am
Posts: 1146
42t with a 11-28 or 12-28 is more than plenty.

48t is way too big. Pro's generally run 46/38 with a 12-25. But with a 32, you might be ok


Top
 Profile  
 
 Post subject: Re: single speed front
PostPosted: Fri Oct 22, 2010 9:14 pm 
Offline

Joined: Mon Nov 03, 2008 8:17 pm
Posts: 37
nitropowered wrote:
42t with a 11-28 or 12-28 is more than plenty.

48t is way too big. Pro's generally run 46/38 with a 12-25. But with a 32, you might be ok


You're probably right. A 46 is probably sufficient. I raced my xc mountain bike with a 44 and it's not like I was topping out. Even with a cross bike I doubt I'll be under-geared!

_________________
Pain is inevitable, suffering is optional.


Top
 Profile  
 
 Post subject: Re: single speed front
PostPosted: Sat Oct 23, 2010 7:27 pm 
Offline

Joined: Thu Jan 11, 2007 3:48 pm
Posts: 255
My main concern would be the rear derailleur.
I think the cage of a rear derrailleur for road bikes is too short for a 32t, perhaps it works but if you have to buy one, I would go for the mtb version.


Top
 Profile  
 
 Post subject: Re: single speed front
PostPosted: Sat Oct 23, 2010 8:26 pm 
Offline
User avatar

Joined: Sat Apr 16, 2005 6:08 pm
Posts: 2832
Location: Boulder, Colorado
Seriously, no need for anything bigger than a 28 in the rear. If you can't fit it with a road derailleur, you shouldn't put it on a cross bike - it'll probably be faster to run...

Most of the single-ring racers I know change out their chainring when they want a lower end rather than messing with a wide cassette where they can't find a gear that they feel comfortable in.

_________________
___________________________________________________

"Organization is for the simple-minded, the Genius controls the chaos." - Jens


Top
 Profile  
 
 Post subject: Re: single speed front
PostPosted: Sun Oct 24, 2010 7:32 am 
Offline

Joined: Thu Jan 11, 2007 3:48 pm
Posts: 255
lancejohnson wrote:
Seriously, no need for anything bigger than a 28 in the rear.....

I totally agree, I've a single 42T and the sprocket with 27t is more than enough


Top
 Profile  
 
 Post subject: Re: single speed front
PostPosted: Mon Nov 29, 2010 5:45 pm 
Offline

Joined: Wed Apr 06, 2005 4:05 pm
Posts: 36
Location: UK
vcnz wrote:
lancejohnson wrote:
Seriously, no need for anything bigger than a 28 in the rear.....

I totally agree, I've a single 42T and the sprocket with 27t is more than enough
don't know what your courses are like but I am on 42T with a 26 largest sprokets and need smaller gears. Most people over here appear to be using compact chainsets so a 34 or 36 smallest at the front.


Top
 Profile  
 
 Post subject: Re: single speed front
PostPosted: Tue Nov 30, 2010 3:38 am 
Offline

Joined: Mon Mar 02, 2009 4:50 am
Posts: 689
a 32t cassette will fit with a road derailleur, but you might need 10t pulleys. Either that, or I've heard that putting the 'b' screw in backwards works.


Top
 Profile  
 
 Post subject: Re: single speed front
PostPosted: Thu Dec 02, 2010 12:08 pm 
Offline

Joined: Sat Jan 26, 2008 10:25 am
Posts: 219
Location: Cantabria
To avoid chain from jumping off the chainring I'm currently using this:

Image

54 grams, works great, looks gorgeous ;)


Top
 Profile  
 
 Post subject: Re: single speed front
Posted: Thu Dec 02, 2010 12:08 pm 


Top
  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 12 posts ] 


Who is online

Users browsing this forum: No registered users and 4 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. single front chainring

[ Go to page: 1, 2 ]

in Road

eliflap-scalpel

18

1074

Sat Aug 23, 2014 1:02 pm

mjduct View the latest post

There are no new unread posts for this topic. My 3rd Rychtarski - Columbus MAX Single Speed.

[ Go to page: 1, 2 ]

in Introduce Yourself / Gallery - Please use metric weights.

Malik

16

1586

Mon Oct 20, 2014 12:26 am

tinytree View the latest post

There are no new unread posts for this topic. Attachment(s) Litespeed Ghisallo single speed conversion

in Introduce Yourself / Gallery - Please use metric weights.

Dansmith667

8

1039

Tue Apr 22, 2014 11:15 am

Dansmith667 View the latest post

There are no new unread posts for this topic. Building a single speed out of a road frame

in Road

MNX1024

3

234

Tue Oct 21, 2014 11:57 pm

dogg View the latest post

There are no new unread posts for this topic. Single front chainring Crit Bike?

in Road

Nadler

10

809

Thu Mar 13, 2014 2:46 am

commendatore View the latest post


It is currently Wed Oct 22, 2014 11:39 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