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Confused about FSA carbon pro team crank installation(5 posts)

Confused about FSA carbon pro team crank installationjzinckgra
Jul 17, 2003 7:03 AM
Ok, so I've got a new pair of FSA carbon cranks along with a fsa platinum pro Ti (ISIS) BB. The cranks came with self extracting alloy bolts while the BB came with regular M14 alloy bolts. I guess the BB was supossed to come with Cr-Mo bolts as well to seat the crank arms onto the spindle, but I never received them. I'll have to buy some. So here's the confusion. Which cranl bolts should I use, once I seat the crank arms with the Cr-Mo bolts? The alloy BB bolts or the self extracting bolts? FSA website says not to use self-extracting bolts on an ISIS spindle, yet they provide them with their own cranks. And why would the self extracotors be bad to use anyways? I'm leaning towards using the BB alloy bolts. Thanks for any info.
Email FSA....SS_MB-7
Jul 17, 2003 8:37 AM
Email Erik Anderson at FSA and he will send you some!

I have a set of FSA Carbon Pro MTB cranks with a FSA Platinum Pro Ti ISIS BB on my MTB. I use a set of steel M-14 bolts (non self-extracting) to install the cranks and then remove them and replace with the alloy M-14 bolts (non self-extracting) for a little bit of weight savings.

The BB came with non-self extracting alloy bolts marked with M-14 and the crankarms came with self-extracting bolts with no markings, but are M-15s.

FSA does not make a self-extracting M-14, only M-15.

Ride Hard,
Mike B.
re: Confused about FSA carbon pro team crank installationrussw19
Jul 17, 2003 7:13 PM
You need to use the bolts that came with your BB. The ones that come with your crank are too small of a diameter and they don't make self-extracting in M14 alloy bolts. Just use the ones that came with your BB and you will be fine. But you will need a tool to get the cranks off the spindle, and make sure you use a splined crank arm remover... the older ones for square tapers can damage the spindle if you use them wrong.

I would not use the supplied M-14 aluminum bolts to install...SS_MB-7
Jul 18, 2003 4:52 AM
Personally, I would not use the supplied M-14 aluminum bolts to install my FSA cranks, or any cranks for that matter. I only use steel to install, remove them once torqued and then replace with aluminum. The provided aluminum bolts are soft and could easily strip under installation torque.

As I mentioned in my original reply, email FSA and they will send you a free set of M-14 steel bolts that you can use for installation purposes.

Ride Hard,
Mike B.
I would not use the supplied M-14 aluminum bolts to install...russw19
Jul 18, 2003 8:08 PM
I asked FSA about it.. they are rated to withstand like 90 foot pounds of torque... they are fine.. I cranked down on mine and had no problem, but that's also why they are oversized. If you feel like waiting for the steel ones, cool! That really is a better way to do it, but the alloy ones are not going to break unless you torque them with a 4 foot lever.