3x9 to 1x10 Conversion Plan
#1
Newbie
Thread Starter
3x9 to 1x10 Conversion Plan
I have a Jamis Coda Comp 2012 that I purchased used from an estate sale.
Jamis Coda Comp (2012) Specs
I want to change it from 3x9 to 1x10 38T 11-48
Here is my plan:
Questions:
Should purchase a new 1x10 crankset? If so can you recommend a brand/model?
Or should change the chainrings on this current Shimano Acera FC-M391 crankset?
If so, do change the middle one? How do I know what bolt configuration to get? Can you recommend a 38T chainring brand/model? If I need shorter bolts where do I purchase them?
Thanks!
Jamis Coda Comp (2012) Specs
I want to change it from 3x9 to 1x10 38T 11-48
Here is my plan:
- Microshift Advent X 11-48 cassette
- Microshift Advent X Trail Trigger Pro Right Shifter 1x10
- Microshift Advent X Rear Derailleur 10-Speed Medium Cage with Clutch
- KMC X10-116L, NP/BK 10-Speed Bicycle Chain
- 38T front
Questions:
Should purchase a new 1x10 crankset? If so can you recommend a brand/model?
Or should change the chainrings on this current Shimano Acera FC-M391 crankset?
If so, do change the middle one? How do I know what bolt configuration to get? Can you recommend a 38T chainring brand/model? If I need shorter bolts where do I purchase them?
Thanks!
#2
Senior Member
Join Date: Feb 2014
Location: Pasadena, CA
Posts: 4,848
Bikes: Schwinn Varsity
Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1931 Post(s)
Liked 742 Times
in
422 Posts
You will need a new Bottom bracket as well. The spec says 68 x 110.5mm but it really is a 68 x 122mm wide square taper.... I know because I had one... fairly nice riding frame...... but it was stolen.
Suggest maybe another option... buy a new bike.
Suggest maybe another option... buy a new bike.
Likes For Siu Blue Wind:
#5
Newbie
Thread Starter
#6
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
you should start by listing the cranksets you are considering buying.
your Acera crankset has a 50mm chainline specified... going from 9 to 10 gears in the back won't alter that.
just remove the inner and outer chainrings and check the chainline to the middle chainring to see that it work fine....an increase from 36 to 38 teeth shouldn't cause interference at the chainstay... the diameter increases 3/4", so the teeth will be 3/8" farther to the rear once the 38 Tooth chainring is mounted to your Acera crank.
Last edited by maddog34; 06-17-23 at 01:16 AM.
Likes For maddog34: