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 05-16-08, 02:28 PM   #1
bionnaki
Senior Member
Thread Starter
 
Join Date: Aug 2006
Bikes:
Posts: 886
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
what cog for sugino rd crankset?

I have a Sugino RD crankset and need to pick up a new cog. The crankset is 165mm and 48t but I'm not sure if they are 1/8" or 3/32" - any ideas? the stock cog is 3/32" but I suspect the cog could be incorrect not because the stock listing says the bike comes with 19t and a Surly cog - but it's actually 17t and no name/generic.

any ideas?
bionnaki is offline   Reply With Quote
Old 05-16-08, 02:38 PM   #2
Build your own
%#&*#%>?%
 
Build your own's Avatar
 
Join Date: Feb 2008
Location: Mass
Bikes: Pake,Shogun,Nishiki,Motobecane
Posts: 845
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
They're 3/32.
Build your own is offline   Reply With Quote
Old 05-16-08, 02:40 PM   #3
jmberg
Senior Member
 
jmberg's Avatar
 
Join Date: May 2005
Location: Cambridge
Bikes:
Posts: 74
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The Sugino RD chainring is 1/8 inch, so if you're getting a new cog, get a 1/8". Make sure you get a 1/8" chain too. The number of teeth is up to you. I have the same crankset and run a Euro Asia 17t cog and I find the ratio to be ideal. I had 16t rear for a few years, and recently changed. Adding one tooth in the rear has made my knees much happier.
jmberg is offline   Reply With Quote
Old 05-16-08, 02:42 PM   #4
deadforkinglast
Senior Member
 
Join Date: Dec 2007
Bikes:
Posts: 413
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The chainring that came with my RD2 crankset was 3/32". I run 1/8" chain and a 1/8" cog with no problems.
deadforkinglast is offline   Reply With Quote
Old 05-16-08, 02:46 PM   #5
jmberg
Senior Member
 
jmberg's Avatar
 
Join Date: May 2005
Location: Cambridge
Bikes:
Posts: 74
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I guess they do come in both 3/32 and 1/8: http://www.sheldonbrown.com/harris/c...30-single.html

Either way, you can still run the 1/8 cog and the 1/8 chain.
jmberg is offline   Reply With Quote
Old 05-16-08, 03:02 PM   #6
Build your own
%#&*#%>?%
 
Build your own's Avatar
 
Join Date: Feb 2008
Location: Mass
Bikes: Pake,Shogun,Nishiki,Motobecane
Posts: 845
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Must be new the ones.I got mine at harris and both were 3/32.It's funny that they still list the chainline as 42mm.

+ 1 on the 1/8 chain
Build your own is offline   Reply With Quote
Old 05-16-08, 03:03 PM   #7
bionnaki
Senior Member
Thread Starter
 
Join Date: Aug 2006
Bikes:
Posts: 886
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
thanks.

is there is any possible gain in using all 1/8 or all 3/32? If I were to use a 1/8 cog with 3/32 chainring, would there be slightly more noise or eventual tooth wear?
bionnaki is offline   Reply With Quote
Old 05-16-08, 03:07 PM   #8
RoyIII
Senior Member
 
RoyIII's Avatar
 
Join Date: Apr 2008
Location: Waxahachie, Texas
Bikes: Gios Compact Pro , Gios fixed gear, Pedal Force RS2, CAAD5 single speed.
Posts: 507
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I run an 8 speed 3/32 chain on my sugino rd, a 48, with an 18 fixed cog, and a 19 ss freewheel. It is windy today and I flipped the rear wheel over and rode the 19 freewheel for the first time - I always rode fixed - and it was real fun. Makes the intersections a little less interesting when you can coast.
RoyIII is offline   Reply With Quote
Old 05-16-08, 03:07 PM   #9
Build your own
%#&*#%>?%
 
Build your own's Avatar
 
Join Date: Feb 2008
Location: Mass
Bikes: Pake,Shogun,Nishiki,Motobecane
Posts: 845
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I run both my RDs with 1/8 cogs and chains and they're super quiet,despite the slightly imperfect chainline.
Build your own 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 05:10 PM.