help with chainring sizes... ?
03-12-06 | 08:57 PM
#1
Thread Starter
One speed: FAST !
Joined: Dec 2005
Posts: 3,375
Likes: 0
From: Ft. Lauderdale FL
Bikes: Ebay Bikes... =)
help with chainring sizes... ?
I need to buy a 50t chainring for my Mercier track bike.. it currently has the highest quality ebay truvativ crank-set and stock 48t chainring available...
I have been looking on ebizzle and other sites and i've come across plenty of matches but I'm afraid of buying the wrong size chainring.....
The chainring from my roadbike-FG conversion is not the same size as on the truvativ crank..
So let me get to the damn question: What size is the truvativ track chainring ?
Thanks !
I have been looking on ebizzle and other sites and i've come across plenty of matches but I'm afraid of buying the wrong size chainring.....
The chainring from my roadbike-FG conversion is not the same size as on the truvativ crank..
So let me get to the damn question: What size is the truvativ track chainring ?
Thanks !
03-12-06 | 09:00 PM
#3
don't pedal backwards...
Joined: Jul 2005
Posts: 754
Likes: 0
From: Minneapolis
Bikes: Surly Long Haul Trucker set up for commuting and loaded touring, old Sekine road frame converted to fixed-gear, various beaters and weird bikes, waiting on the frame for my Surly Big Dummy build
For a typical five-hole ring, measure two neighboring holes from center-to-center and multiply the distance by 1.7 to get the BCD of the chainring.
03-12-06 | 09:06 PM
#5
don't pedal backwards...
Joined: Jul 2005
Posts: 754
Likes: 0
From: Minneapolis
Bikes: Surly Long Haul Trucker set up for commuting and loaded touring, old Sekine road frame converted to fixed-gear, various beaters and weird bikes, waiting on the frame for my Surly Big Dummy build
To save you of some of the hard, hard work, just make the measurement seen above. If it comes out to about 76.4mm (3.01 inches), you have a 130mm BCD.
03-14-06 | 04:11 PM
#6
Thread Starter
One speed: FAST !
Joined: Dec 2005
Posts: 3,375
Likes: 0
From: Ft. Lauderdale FL
Bikes: Ebay Bikes... =)
This crankset is a curse.
It is a 130 bcd. Just try and find a 50 t chainring in 1/8 size for less than $ 100.
The only one I've found is the Shimano DuraAce unit... f-ing ripoff.
They've got dozens of 144bcd version of it for under $ 50 new everywhere !!!!!!!!
DAYUM !!!!!!!!
Dubya, help me out on this one willya !
It is a 130 bcd. Just try and find a 50 t chainring in 1/8 size for less than $ 100.
The only one I've found is the Shimano DuraAce unit... f-ing ripoff.
They've got dozens of 144bcd version of it for under $ 50 new everywhere !!!!!!!!
DAYUM !!!!!!!!
Dubya, help me out on this one willya !
Last edited by fordfasterr; 03-14-06 at 04:17 PM.
03-14-06 | 04:32 PM
#7
live free or die trying
Joined: Oct 2005
Posts: 6,999
Likes: 0
From: where i lay my head is home.
Bikes: bianchi pista workhorse, cannondale r1000, mountain bike fixed conversion
dubya ain't helped nothin' (unless you're filthy stinkin' rich already).
that said, DA isn't bad. both as discordance axis and dura-ace. anyway, i don't know what price you've found it for, but i don't know what choice you have, other than to stick with 48t till you can afford the 50t.
that said, DA isn't bad. both as discordance axis and dura-ace. anyway, i don't know what price you've found it for, but i don't know what choice you have, other than to stick with 48t till you can afford the 50t.
03-14-06 | 05:12 PM
#9
Senior Member
Joined: Apr 2004
Posts: 6,357
Likes: 167
From: Sacramento CA
Bikes: Too Many
Why not just get a cog with one more tooth. They are cheaper than a chainring.
__________________
I'm not one for fawning over bicycles, but I do believe that our bikes communicate with us, and what this bike is saying is, "You're an idiot." BikeSnobNYC
I'm not one for fawning over bicycles, but I do believe that our bikes communicate with us, and what this bike is saying is, "You're an idiot." BikeSnobNYC
03-14-06 | 05:19 PM
#10
Member's Only
Joined: Sep 2005
Posts: 524
Likes: 0
From: MPLS
Bikes: Bridgesetone RB-1 fixie, Surly CrossCheck, Surly Instigator, Salsa AlaCarte, Bianchi Timberwolf SS
eh, (a cog with 1 less tooth).
either they shank you with the cost of a crankset that's 144bcd (sugino 75, campy), or they get you with the cost of the chainring..
either they shank you with the cost of a crankset that's 144bcd (sugino 75, campy), or they get you with the cost of the chainring..
03-15-06 | 03:59 AM
#12
greatest man alive
Joined: Mar 2006
Posts: 224
Likes: 0
From: oneco
Bikes: basso track, rossin track, diamond and ruby studded pocket bike.
Originally Posted by Cynikal
Why not just get a cog with one more tooth. They are cheaper than a chainring.
03-15-06 | 07:08 AM
#13
Thread Starter
One speed: FAST !
Joined: Dec 2005
Posts: 3,375
Likes: 0
From: Ft. Lauderdale FL
Bikes: Ebay Bikes... =)
I tried a 14t and it was too much gear for me.
I could barely move the bike... (I can barely move it as it is lol).
Anyway, I was looking at the chainring that came with the truvativ crankset and I noticed that it is not even a track chainring.. is a regular 3/32 size.
Anyway, if I'm going to bother with getting a bigger chainring, I'm going to get the right size.
Sheesh.
I could barely move the bike... (I can barely move it as it is lol).
Anyway, I was looking at the chainring that came with the truvativ crankset and I noticed that it is not even a track chainring.. is a regular 3/32 size.
Anyway, if I'm going to bother with getting a bigger chainring, I'm going to get the right size.
Sheesh.
03-15-06 | 07:42 AM
#14
aka mattio
Joined: May 2005
Posts: 6,586
Likes: 58
Bikes: yes
For 130 mm. bolt circle pattern cranks:
* Spécialités TA
Alize Piste 1/8"
+ 40, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52 - $49.50
* Stronglight
Track 1/8"
+ 48 - $47.50
* SUGINO
130J 3/32"
+ 44, 46, 48, 50 - $32.50
https://businesscycles.com/trcomp.htm#chainrings
* Spécialités TA
Alize Piste 1/8"
+ 40, 42, 44, 45, 46, 47, 48, 49, 50, 51, 52 - $49.50
* Stronglight
Track 1/8"
+ 48 - $47.50
* SUGINO
130J 3/32"
+ 44, 46, 48, 50 - $32.50
https://businesscycles.com/trcomp.htm#chainrings
