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Not the Slowest
09-16-2020, 06:10 PM
Trying to rule out some noises on my bike so I figure checking the
chainring bolts is part of that.
I have an FSA Carbon crank and unsure what to set my torque to for tightening.
Any help?
Thanks Robert
R3awak3n
09-16-2020, 07:04 PM
You need to find it from the instruction manual but its probably around 8nm
Mark McM
09-16-2020, 07:14 PM
While it doesn't have a specific listing for FSA chainring bolts, this page has manufacturers torque specs. for a number of components including chainring bolts:

https://www.bikeride.com/torque-specifications/
R3awak3n
09-16-2020, 07:17 PM
Also maybe depends on cranks. My crank had their propietary 4 bolt system, I think it was called ABS and from what I remember was either 8 or 10nm. I think torx 25 bolts.
Velocipede
09-16-2020, 08:01 PM
It depends on the brand and the type of chainring bolt material and even which chainrings they are.
FSA Alloy bolts, they are 120kgf.cm / 12Nm / 106 in. lb.
These numbers are from FSA.
Not the Slowest
09-16-2020, 08:04 PM
The manual is long long gone. This puppy is Octalink old. I saw the link earlier and did not find the answer so I am going with 8Nm. In the end my effort is to re-tighten if needed.
Of course if it was done at say 6-7Nm when installed then I am over doing it but it sounds close enough.
Not the Slowest
09-16-2020, 08:05 PM
Maybe I will try to find the instructions online.
Velocipede
09-16-2020, 08:07 PM
The manual is long long gone. This puppy is Octalink old. I saw the link earlier and did not find the answer so I am going with 8Nm. In the end my effort is to re-tighten if needed.
Of course if it was done at say 6-7Nm when installed then I am over doing it but it sounds close enough.

Here's the link to the FSA install guide that lists 12Nm. for the torque.

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwiL5e7__-7rAhUIjq0KHcWwA0oQFjAKegQIARAB&url=https%3A%2F%2Fshop.fullspeedahead.com%2Fen%2Ff iles%2Findex%2Fdownload%2Fid%2F53d5b1c983db2cc7267 3071b9b5be4d3261%2F&usg=AOvVaw2SDrervaiIVuRBgPMsSKAi
Not the Slowest
09-16-2020, 08:35 PM
Thank You
oldpotatoe
09-17-2020, 06:47 AM
Trying to rule out some noises on my bike so I figure checking the
chainring bolts is part of that.
I have an FSA Carbon crank and unsure what to set my torque to for tightening.
Any help?
Thanks Robert

Asked and answered.make sure you lube them along with places on the crank arm where the CR touched the spider.