Crankset Chainline
#1
Junior Member
Thread Starter
Crankset Chainline
I have an All City Nature Boy from 2015. The crankset is FSA Vero. The chainring is on the inner side of the spider. It came with a bash guard on the outer side of the spider but I since removed it. I think the chainline is 44 mm.
I am considering replacing the crankset (which has 130 bcd) with one with a 110 bcd. The reason I'm thinking about doing it now is because I will likely need to replace the chainring soon anyways. Can I mount the chainring on the inside spider of any singlespeed crankarm? If so, should I try to find one with a 110 bcd? Also, is the chainline for single and double cranksets different even if the chainring is mounted on the inner side of the spider?
Thanks
I am considering replacing the crankset (which has 130 bcd) with one with a 110 bcd. The reason I'm thinking about doing it now is because I will likely need to replace the chainring soon anyways. Can I mount the chainring on the inside spider of any singlespeed crankarm? If so, should I try to find one with a 110 bcd? Also, is the chainline for single and double cranksets different even if the chainring is mounted on the inner side of the spider?
Thanks
#2
Guest
Join Date: Sep 2020
Posts: 2,888
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 1346 Post(s)
Liked 3,270 Times
in
1,439 Posts
I believe it's 45mm, but find this out first.
Why are you replacing the crankset if only the chainring is worn?
Not necessarily.
I'm unclear on why you want to change BCD from 130 to 110.
Yes.
These may be helpful:
https://www.parktool.com/blog/repair...nline-concepts
https://www.sheldonbrown.com/chainline.html
I'm unclear on why you want to change BCD from 130 to 110.
These may be helpful:
https://www.parktool.com/blog/repair...nline-concepts
https://www.sheldonbrown.com/chainline.html
Last edited by Rolla; 10-01-20 at 10:47 AM.
#3
Junior Member
Thread Starter
I'm unclear on why you want to change BCD from 130 to 110.
#4
Guest
Join Date: Sep 2020
Posts: 2,888
Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 1346 Post(s)
Liked 3,270 Times
in
1,439 Posts
If it was me, I'd avoid the whole chainline issue entirely and just replace the worn chainring with another 38T and replace the rear FW cog with a bigger one. If you go from a 38 to a 34T in front, you'll probably want a different FW cog anyway; that's a big decrease in gear inches.
Last edited by Rolla; 10-03-20 at 10:34 AM.
#5
Junior Member
Thread Starter
Thanks for the advice. I decided to keep the crankset and just replace the chainring. If I want an easier gear ratio I will just get a bigger freewheel but I probably won't do this in the near future. With a singlespeed I'm always in the wrong gear anyways. ;-)
Likes For AMoney: