Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  

Go Back   > >

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.

User Tag List

Thread Tools Search this Thread
Old 11-19-11, 03:39 PM   #1
Senior Member
Thread Starter
Join Date: Dec 2010
Posts: 357
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
New Chainrings: Am I overthinking it?

Picked up some new chainrings for a song. Current set-up is Rival 50/34 compact (110 BCD), and I picked up a set of Red Black take-offs, also in compact 50/34 110BCD, so I know they will work. The current chainrings have ~1500miles on them, not worn out or anything, but I've been told the stiffer Red rings would improve front shifting, and for how cheap I got them I think they look cooler too.

So I want to go ahead and put these new chainrings on. Chainring bolts are allen heads on both sides, easy enough. Grease the threads, check. Torque spec 8-9 Nm, simple. Don't even have to break the chain. Seems...too easy.

Is there anything I'm missing here? I think I'm just overthinking it. Like the chain, should I replace it? It's measured something like ~.5% "stretched", not worn out by any means, but is it "worn into" the chainrings? Maybe wait until the chain needs replacing anyway (which is no fun at all when I have shiny new bike parts)?

I should probably worry less, but could I get some reassurance anyway?

pbd is offline   Reply With Quote
Old 11-19-11, 03:43 PM   #2
Senior Member
Join Date: Oct 2007
Location: West Yorkshire, United Kingdom
Posts: 4,844
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 44 Post(s)
Replace, don't replace, the choice is yours, if you have shiny parts, it's a shame not to show them off.

As for the chain, if it's only got 1500 miles on it, should have a lot of life left in it, would only replace for cosmetic reasons in your case.
jimc101 is offline   Reply With Quote
Old 11-19-11, 07:05 PM   #3
Senior Member
Join Date: Feb 2009
Posts: 4,930
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 35 Post(s)
The test for chain replacement is to measure it with a ruler. 1/16" wear in 12" of chain is replacement time. I hang my chain after I clean and dry it and measure 4' of chain. 1/4" in 48" is time for a new one.
davidad is offline   Reply With Quote
Old 11-19-11, 07:50 PM   #4
Senior Member
MudPie's Avatar
Join Date: May 2004
Location: Southern California
Posts: 1,874
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Pretty much you're done. Torquing the chainring bolts is a detail most probably ignore. Mechanically you're fine. Regarding the chain, I'd compromise and perhaps break it and clean it well in a Simple Green bath. And while you're at it, pop off the cassette and clean that too. It'd be a nice clean drive train!
MudPie is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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

All times are GMT -6. The time now is 12:24 PM.