Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

User Tag List

Reply
 
Thread Tools Search this Thread
Old 08-20-07, 12:49 PM   #1
fatigoworld
Senior Member
Thread Starter
 
Join Date: Jul 2006
Bikes:
Posts: 351
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
3/32" 144bcd track or SS chainring?

does this exist besides the dura ace? i dont really wanna throw down 100 bucks on a chainring...

also 42t would be awesome!
fatigoworld is offline   Reply With Quote
Old 08-20-07, 12:56 PM   #2
Re-Cycle
<3s bikes
 
Re-Cycle's Avatar
 
Join Date: Dec 2005
Location: CA
Bikes: lots
Posts: 1,054
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I don't intend to steer you away from what you are trying to do, but why do you want a 3/32" chainring?
Re-Cycle is offline   Reply With Quote
Old 08-20-07, 01:18 PM   #3
fatigoworld
Senior Member
Thread Starter
 
Join Date: Jul 2006
Bikes:
Posts: 351
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i am running a single speed and sometimes gears with a single chainring front. 1/8" will not work with gears as far as i know and running a single chainring front with ramped teeth i dont think would be safe...

also i want 144bcd so i can get a track crank which would acheive a better chainline for the freehub im using....ie 42mm as opposed to 46mm
fatigoworld is offline   Reply With Quote
Old 08-20-07, 01:26 PM   #4
Cynikal
Team Beer
 
Cynikal's Avatar
 
Join Date: Apr 2004
Location: Sacramento CA
Bikes: Too Many
Posts: 5,925
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
I have a couple of older sugino road cranks that had a 144 bcd. The chain rings exist but may be getting harder to find.
Cynikal is offline   Reply With Quote
Old 08-20-07, 01:30 PM   #5
fatigoworld
Senior Member
Thread Starter
 
Join Date: Jul 2006
Bikes:
Posts: 351
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
well i would prefer track rings to road rings as the teeth ramped on road. anyone else know where to find this?
fatigoworld is offline   Reply With Quote
Old 08-20-07, 01:34 PM   #6
Cynikal
Team Beer
 
Cynikal's Avatar
 
Join Date: Apr 2004
Location: Sacramento CA
Bikes: Too Many
Posts: 5,925
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
They aren't ramped on older road rings. Have you looked at salsa?

http://www.salsacycles.com/chainrings.html

2nd one down.
Cynikal is offline   Reply With Quote
Old 08-20-07, 01:46 PM   #7
barba
Senior Member
 
barba's Avatar
 
Join Date: Nov 2005
Bikes:
Posts: 4,083
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Look in the old parts bin at your local shop. They may even just give you one, as there are plenty of old 3/32" in this world.
barba is offline   Reply With Quote
Old 08-20-07, 01:47 PM   #8
fatigoworld
Senior Member
Thread Starter
 
Join Date: Jul 2006
Bikes:
Posts: 351
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i saw those salsa ones before and didnt notice they were for single speed. PERFECT! thank you thank you thank you....
fatigoworld is offline   Reply With Quote
Old 08-20-07, 01:47 PM   #9
dutret
Banned
 
Join Date: May 2005
Location: GA
Bikes:
Posts: 5,317
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
get a road crank. You can get the same chainline and will have no trouble finding 42t or 3/32. I assume "better chainline" means narrower and you will be able to go narrower with a road crank then a track one since the ring can be put on the inside.
dutret is offline   Reply With Quote
Old 08-20-07, 01:49 PM   #10
dutret
Banned
 
Join Date: May 2005
Location: GA
Bikes:
Posts: 5,317
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Cynikal View Post
They aren't ramped on older road rings. Have you looked at salsa?

http://www.salsacycles.com/chainrings.html

2nd one down.
The picture shows pins.
dutret is offline   Reply With Quote
Old 08-20-07, 01:54 PM   #11
fatigoworld
Senior Member
Thread Starter
 
Join Date: Jul 2006
Bikes:
Posts: 351
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by dutret View Post
get a road crank. You can get the same chainline and will have no trouble finding 42t or 3/32. I assume "better chainline" means narrower and you will be able to go narrower with a road crank then a track one since the ring can be put on the inside.
yes, it means narrower and youre right. but id rather go through the trouble and have the chainring on the outside because im anal. i have to get a new crankset and BB anyway so i might as well go for aesthetic as well as function....
fatigoworld is offline   Reply With Quote
Old 08-20-07, 01:55 PM   #12
fatigoworld
Senior Member
Thread Starter
 
Join Date: Jul 2006
Bikes:
Posts: 351
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
says no ramps or pins here....

http://www.speedgoat.com/product.asp...t=50&brand=216
fatigoworld is offline   Reply With Quote
Old 08-20-07, 02:06 PM   #13
dutret
Banned
 
Join Date: May 2005
Location: GA
Bikes:
Posts: 5,317
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by fatigoworld View Post
yes, it means narrower and youre right. but id rather go through the trouble and have the chainring on the outside because im anal. i have to get a new crankset and BB anyway so i might as well go for aesthetic as well as function....
What you apparently fail to understand is that how narrow you can go is determined usually by where the chainring will hit the chainstay. Therefore you will normally be able to go just as narrow with a road crank as with a track crank. On rare ocaisions you will find that the limiting factor will be when the crank hits the chainstay. This can only happen when you have the ring on the outside. A track ring where you can only mount on the outside will at best provide the same chainline as a road crank an may force you to push it farther out.

EDIT: now that I think about it with a 42t 144bcd setup the crank will likely hit first since the ring is barely bigger then it so the track crank is unlikely to even match the road crank in chainline.

Pins help derail the chain they are worse then ramps... you don't really want them if you are only running a single ring up front. There are plenty of 130mm cross rings that fit your speficication but not many 144 ones.

You should just get a road crank and use a cyclocross ring.

Last edited by dutret; 08-20-07 at 02:15 PM.
dutret is offline   Reply With Quote
Old 08-20-07, 02:51 PM   #14
fatigoworld
Senior Member
Thread Starter
 
Join Date: Jul 2006
Bikes:
Posts: 351
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
youre right about all that. but between having the ring on the outer on track versus the outer on road. the track would be closer. road outer is 46mm. track is 42mm. and track doesnt have mounts for a inner chainring. i know it makes more sense to put it on a road inner and it would be a more efficient chainline (41mm), but i dont like how that looks, which makes sense too. making track the best choice for an outer chainring?

Last edited by fatigoworld; 08-20-07 at 03:10 PM.
fatigoworld is offline   Reply With Quote
Old 08-20-07, 03:16 PM   #15
dutret
Banned
 
Join Date: May 2005
Location: GA
Bikes:
Posts: 5,317
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by fatigoworld View Post
youre right about all that. but between having the ring on the outer on track versus the outer on road. the track would be closer. road outer is 46mm. track is 42mm. and track doesnt have mounts for a inner chainring. i know it makes more sense to put it on a road inner and it would be a more efficient chainline (41mm), but i dont like how that looks, which makes sense too. making track the best choice for an outer chainring?
I guess I wasn't clear. Chainline is not solely determined by the crank. It is a combination of the crank and the bb. If you get a shorter bb with a road crank you will be able to move the ring in even while you keep it on the outside of the spider. What limits how small of a chainline you can get in most cases is clearance with the chainstay.
dutret is offline   Reply With Quote
Old 08-20-07, 03:19 PM   #16
dutret
Banned
 
Join Date: May 2005
Location: GA
Bikes:
Posts: 5,317
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by fatigoworld View Post
youre right about all that. but between having the ring on the outer on track versus the outer on road. the track would be closer. road outer is 46mm. track is 42mm. and track doesnt have mounts for a inner chainring. i know it makes more sense to put it on a road inner and it would be a more efficient chainline (41mm), but i dont like how that looks, which makes sense too. making track the best choice for an outer chainring?
I guess I wasn't clear. Chainline is not solely determined by the crank. It is a combination of the crank and the bb. If you get a shorter bb with a road crank you will be able to move the ring in even while you keep it on the outside of the spider. What limits how small of a chainline you can get in most cases is clearance with the chainstay.

If it was me I would put a chainguard on the outside and the ring on the inside. When you go geared you will find that the chain is much more likely to derail and appreciate having something to keep it in place.
dutret is offline   Reply With Quote
Old 08-20-07, 03:30 PM   #17
fatigoworld
Senior Member
Thread Starter
 
Join Date: Jul 2006
Bikes:
Posts: 351
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
i was under the impression that each crankset accepts a specific spindle length. i didnt know you could use a shorter spindle with the same crankset. good to know.

yeah, ive posted a thread on chainguards and a few people said they werent entirely necessary for this set up. ive been riding this setup for a while with 5 sprockets in the rear and a single front with no chainguards. no problems so far. gotta get a new BB and crank though so thought i might as well work on the chainline while im at it.
fatigoworld is offline   Reply With Quote
Old 08-20-07, 03:35 PM   #18
fatigoworld
Senior Member
Thread Starter
 
Join Date: Jul 2006
Bikes:
Posts: 351
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
and thanks for the help btw
fatigoworld is offline   Reply With Quote
Old 08-20-07, 04:10 PM   #19
baxtefer
Cornucopia of Awesomeness
 
baxtefer's Avatar
 
Join Date: Oct 2004
Location: not where i used to be
Bikes:
Posts: 4,847
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
each crank accepts a specific type of spindle taper (or spline pattern)
you pick a spindle length to give you an appropriate chainline.

i've got a few 3/32" rings lying around if you're interested. Only 48 and 50T though.
and i think 42T is the smallest you can go with a 144BCD. Check out Blackspire too.
baxtefer is offline   Reply With Quote
Old 08-20-07, 04:58 PM   #20
Cynikal
Team Beer
 
Cynikal's Avatar
 
Join Date: Apr 2004
Location: Sacramento CA
Bikes: Too Many
Posts: 5,925
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Quote:
Originally Posted by dutret View Post
The picture shows pins.
You're right, weird. I have a 45 tooth version of one with a 130 bcd and there are no pins.
Cynikal is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 12:42 AM.