Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

Changing out my IRD Touring Triple chainrings to smaller rings

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

Changing out my IRD Touring Triple chainrings to smaller rings

Old 09-22-14, 03:51 PM
  #1  
Senior Member
Thread Starter
 
Join Date: Dec 2013
Posts: 92
Likes: 0
Liked 0 Times in 0 Posts
Changing out my IRD Touring Triple chainrings to smaller rings

I have an IRD Touring triple crankset with the stock 48-36-24 on my Soma Saga. I hardly ever use the 48, and could use a slightly lower gear than the 36, so I was thinking of switching the rings to 43-35-24 (110-110-74 BCD) with rivvy chainrings. Is there anything I need to be concerned about when doing this swap drivetrain wise? Do you have any other chainrings you'd recommend in that range? (maybe stainless steel ones?)

I have a 11-34 rear with shimano XT shadow SGS rear mech and a IRD Alpina D front mech.

Thanks!
LlamaBikes is offline  
Old 09-22-14, 04:07 PM
  #2  
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 33,656

Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!

Likes: 0
Liked 1,099 Times in 745 Posts
Chainrings for 110/74 mm bcd cranks are more commonly available in 42 or 44 for the larger ring and 34 is the most common smaller middle ring. Rivendell seems to sell different-for-the-sake-of-being-different components and I have no idea if these are well made or not. From their photos these seem to be "flat" chainrings, i.e. lacking any of the modern pins, ramps and shaped teeth that greatly aid shifting. I'd try to find a matched set of Shimano 110 bcd chainrings.
HillRider is offline  
Old 09-22-14, 06:46 PM
  #3  
Really Old Senior Member
 
Bill Kapaun's Avatar
 
Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Posts: 14,008

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds. 2019 Giant Explore E+3

Liked 1,364 Times in 933 Posts
Originally Posted by LlamaBikes
I have an IRD Touring triple crankset with the stock 48-36-24 on my Soma Saga. I hardly ever use the 48, and could use a slightly lower gear than the 36, so I was thinking of switching the rings to 43-35-24 (110-110-74 BCD) with rivvy chainrings. Is there anything I need to be concerned about when doing this swap drivetrain wise? Do you have any other chainrings you'd recommend in that range? (maybe stainless steel ones?)

I have a 11-34 rear with shimano XT shadow SGS rear mech and a IRD Alpina D front mech.

Thanks!
"ODD" tooth counts on those rings tend to be EXPENSIVE compared to "EVEN" tooth counts.

Maybe you would have better ranges with a 12-27 cassette if you don't need the "wall climbing" low gearing?

Your FDER may not want to play nice with a large ring 5T smaller than what it expects.
On my 2 bikes, my large rings are 4 & 6T smaller than "expected by the FDER. The 4T one shifts OK. The 6T one needs a bit of "help".

Last edited by Bill Kapaun; 09-22-14 at 06:52 PM.
Bill Kapaun is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
TimothyH
Cyclocross and Gravelbiking (Recreational)
3
02-01-18 09:46 AM
kpp80202
Bicycle Mechanics
8
04-19-13 12:02 PM
pauline22
Bicycle Mechanics
18
12-20-10 01:08 AM
iain.dalton
Bicycle Mechanics
5
07-21-10 05:14 PM

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Your Privacy Choices -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.