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-   -   front chain ring replacements (https://www.bikeforums.net/mountain-biking/822693-front-chain-ring-replacements.html)

Daniel 62 06-03-12 11:23 AM

front chain ring replacements
 
I had my New Talus 29 Sport up on the stand today for a cleaning and brake adjustments
I got to looking at the Largest chainring, that I have only used maybe 5 times, and it seems to be a total pc of junk.
Every tooth on it appears different, Some are sharp, some are flat, in a very random order.
The Raleigh website says its a Shimano Alivo MC430 Octalink 22/32/44t ,
I suppose I could call my dealer and ask, but I am sure there gonna say its fine.
So my question to you guys is What I need to get to replace it? I imagine all 3 rings are the same quality
I'd prefer to do the work myself, But I am just not sure what to get or where? Surely I can use my cranks
and BB. I am on a budget, My riding is casual, Park trails, some off road trails
appreciate any advice

Thanks

Dave

cryptid01 06-03-12 12:08 PM

Its much more likely that the different tooth profiles are by design (to aid shifting) rather than a result of poor manufacturing by Shimano.

Daniel 62 06-03-12 12:19 PM

very interesting, I was looking at chain rings on Jensons site, Shimano's and in the enlarged view they too looked irregular
I guess its suppose to be that way. Looks odd, looks worn out

thanks

Dave

Grimlock 06-03-12 12:20 PM


Originally Posted by cryptid01 (Post 14307691)
Its much more likely that the different tooth profiles are by design (to aid shifting) rather than a result of poor manufacturing by Shimano.

Bingo.

milkbaby 06-03-12 12:30 PM

+2 shaped teeth are on purpose.

If you never use the large chainring, you could replace it with a bashguard. Nice for keeping the other chainrings from getting messed up when clearing big logs and other obstacles.


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