Compact Road Crankset
#1
Senior Member
Thread Starter
Join Date: Jun 2004
Posts: 272
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Compact Road Crankset
I am building another fixie and am down to the crankset. I have a compact crankset laying around that I would love to use but I am unsure about chainring selection. So, what is the smallest outside ring I can get and largest inside ring on a 110BCD? Thanks.
#2
Body By Nintendo
Join Date: Sep 2006
Location: Videogames ruined my life. Good thing i have 2 extra lives.
Posts: 3,187
Bikes: Giant TCR2, Giant TCX, IRO BFSSFG SE, Salsa Casseroll, IRO Rob Roy.
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
33T is the smallest possible i believe, avaliable through Harris Cyclery last i saw. 34T is much more common though (FSA makes some, avaliable from JensonUSA).
#3
jack of one or two trades
Join Date: Jun 2005
Location: Suburbia, CT
Posts: 5,640
Bikes: Old-ass gearie hardtail MTB, fix-converted Centurion LeMans commuter, SS hardtail monster MTB
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
You'll be really hard pressed to find anything smaller than a 34t. If you get into 4-bolts, then it goes down to 32.
#4
Senior Member
Join Date: Nov 2004
Location: Davis CA
Posts: 3,959
Bikes: Surly Cross-Check, '85 Giant road bike (unrecogizable fixed-gear conversion
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Likes: 0
Liked 4 Times
in
3 Posts
The inside and outside BCD on a double crankset are the same. So you can put a 50t ring on the inside and a 34t ring on the outside. Do whatever gives you the best chainline. Seeing that you are building another fixie, you should already know this.
#5
Senior Member
Thread Starter
Join Date: Jun 2004
Posts: 272
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Well what I meant by inside/outside is that most places sell rings for compacts as "inside" or "outside". I was really hoping that someone would say that there is a 42 or a 44 out there somewhere for 110BCD. Is that not the case? Thanks.
#6
antisocialite
Join Date: Apr 2006
Posts: 3,385
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Originally Posted by Leviathan
Well what I meant by inside/outside is that most places sell rings for compacts as "inside" or "outside". I was really hoping that someone would say that there is a 42 or a 44 out there somewhere for 110BCD. Is that not the case? Thanks.
https://www.sheldonbrown.com/harris/chainrings/110.html
the cheaper rocket ring works quite well for my purposes, your mileage may vary.
#7
jack of one or two trades
Join Date: Jun 2005
Location: Suburbia, CT
Posts: 5,640
Bikes: Old-ass gearie hardtail MTB, fix-converted Centurion LeMans commuter, SS hardtail monster MTB
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Originally Posted by Leviathan
Well what I meant by inside/outside is that most places sell rings for compacts as "inside" or "outside". I was really hoping that someone would say that there is a 42 or a 44 out there somewhere for 110BCD. Is that not the case?
You can find rings from 34t all the way up to 54t pretty easily.
#10
-+-+-+
Join Date: Sep 2006
Location: las vegas nv.
Posts: 80
Bikes: some
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
...
Originally Posted by Surferbruce
salsa cycles also has a big range of rings with various bcd.
#11
spinspinspinspin
Join Date: Nov 2004
Posts: 880
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Originally Posted by E !
I second salsa rings. One differance between large and mid rings. The large ones are made to fit the chainring bolt to the outside. Middle rings are not made that way. I would only use a ss specific ring though.
#13
Paste Taster
Join Date: May 2006
Location: Sacramento, CA
Posts: 4,392
Bikes: , Jury Bike, Moto Outcast 29, Spicer standard track frame and spicer custom steel sprint frame.
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
rocket rings bro 33 and 32 if you can find em they are a popular size