What is the spacing on sram's 12sp chainrings?
06-05-23, 10:09 PM
#1
Senior Member
Thread Starter
Join Date: Dec 2019
Location: South Shore of Long Island
Posts: 2,799
Bikes: 2010 Carrera Volans, 2015 C-Dale Trail 2sl, 2017 Raleigh Rush Hour, 2017 Blue Proseccio, 1992 Giant Perigee, 80s Gitane Rallye Tandem
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 1088 Post(s)
Liked 1,022 Times
in
722 Posts
What is the spacing on sram's 12sp chainrings?
A bit of searching hasn't turned up much on this, looking for the spacing between a rings on a 12sp sram road double crankset. I'm trying to see if I can make a non-sram double crankset run on my daughter's Rival axs setup. It's been running 1x which worked fine with a 40t ring for Jr. gearing restrictions but those restrictions went away and a 46t went on so she could keep up in the races. But this last week she did the Hincapie Grand Fondo in PA and the 46/34 was not low enough to make several of the climbs. Right now I can't find the 160mm rival crankset in stock unless I get the wide version which is a poor choice for a 12yo girl so I'm trying to make her 155mm crank compatible. I figure this means I'll have to mill the spider some, or the chainrings to get the spacing close enough, just need to figure the spacing I have to reach.
06-06-23, 11:17 AM
#2
Senior Member
Join Date: Jul 2015
Location: NW Oregon
Posts: 2,975
Bikes: !982 Trek 930R Custom, Diamondback ascent with SERIOUS updates, Fuji Team Pro CF and a '09 Comencal Meta 5.5
Mentioned: 15 Post(s)
Tagged: 1 Thread(s)
Quoted: 1299 Post(s)
Liked 739 Times
in
534 Posts
Email SRAM.. ask them?
and, in my experience... 12 yr. olds grow like crazy... she'll fit the longer crankset perfectly in a few weeks... and then need a longer one in a couple months.... etc.
and, in my experience... 12 yr. olds grow like crazy... she'll fit the longer crankset perfectly in a few weeks... and then need a longer one in a couple months.... etc.
06-08-23, 03:02 PM
#3
Newbie
Join Date: May 2023
Location: Seattle
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Eyeballing with some calipers, it looks like about 8mm, though that could be off by half a mm or so.
If it were me, I would try the 165mm cranks with 46/33. Or for more $$$ you could keep the 1x and get an XPLR RD and 10-44 cassette.
If it were me, I would try the 165mm cranks with 46/33. Or for more $$$ you could keep the 1x and get an XPLR RD and 10-44 cassette.
