Hi - ive got an S Works Tarmac SL4 with Specialized's own carbon cranks installed as of last July - I havent ridden them much - a few hundred miles so far but ive noticed that a few of the teeth on the chainrings have snapped off, normally when the bike makes a very loud noise. Is this normal? Personally i cant remember it really happening on previous campag cranks and i dont think its acceptable on a £500 set of cranks. Should my LBS warrant a new outer chainring?
Thanks
Rhys.
Specialized Carbon Cranks - teeth breaking on chainrings
Moderator: robbosmans
Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓ Broad Selection ✓ Worldwide Delivery ✓
www.starbike.com
- prendrefeu
- Posts: 8580
- Joined: Wed Oct 31, 2007 10:32 pm
- Location: Glendale / Los Angeles, California
- Contact:
Yes.
Exp001 || Other projects in the works.
- BobDopolina
- Shop Owner / Manufacturer
- Posts: 108
- Joined: Thu Jan 24, 2013 8:48 am
- Location: Taiwan
- Contact:
Are you certain the teeth aren't cut that way to allow faster shifting?
Pics would help.
Pics would help.
BDop Cycling Co., Ltd.
https://www.bdopcycling.com" onclick="window.open(this.href);return false;
https://www.bdopcycling.com" onclick="window.open(this.href);return false;
-
- Posts: 91
- Joined: Wed Oct 06, 2010 3:38 am
BobDopolina wrote:Are you certain the teeth aren't cut that way to allow faster shifting?
Pics would help.
bob has a good point. you may be very experienced, so please forgive us -- but many people look at a perfectly good chainring and think it is broken because they do not realize it is normal for some teeth to be shorter than others. i am assuming you are not one of them, but we just want to be certain.
i've had very poor experiences with specialized chainrings over time -- so much so that even when i got them for free i would immediately toss them. i'm no cancellara, but i could get them to flex (especially the lighter weight ones) and also found that on some power meters they would not produce reliable numbers.
now, i immediately put dura ace chainrings on all my (shimano-compatible) setups. they are phenomenal.
specialized makes many, many amazing products, but i cannot get down with those rings.
Visit starbike.com Online Retailer for HighEnd cycling components
Great Prices ✓ Broad Selection ✓ Worldwide Delivery ✓
www.starbike.com
-
- Posts: 162
- Joined: Sun Jan 11, 2009 9:31 pm
- Location: Wales, UK
I dont think theyre supposed to be like that because the placing of them is completely random. rather than them being pointed, some of them are completely flat - ill post a pic at some point although i do take the point that they could be deliberate to improve the speed at which you can shift - im not too impressed with the cranks either - wish id bought the BB30 SRAM Red instead