Bicycle Mechanics - FSA Gossamer replacement w/ internal press fit BB
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07-29-09, 07:31 PM
I'm wanting to replace my FSA gossamer crankset on a Giant Defy Advanced 3, there's nothing wrong with it other than the color, it's the bare aluminum and everything else on the bike is black. I can pick up a black one cheap enough to justify the cosmetic change. Here's the dilemma, I'm fairly new to this first off, the auction states "Requires separate 108mm ISIS bottom bracket" and my bike states it has a "FSA Gossamer press fit bb" Will these two simply swap out? Also, they're both compact and 175mm. In addition, what specialty tools will I need to get to perform this operation? Thanks!
07-29-09, 07:58 PM
Nope it won't work
07-29-09, 08:44 PM
Nope it won't work
What shall I specifically look for then?
Get another Gossamer in black if you're looking to re-use the BB. The Gossamers use FSA's MegaExo BB.
You'll need allen wrenches, a torque wrench, and a external bearing BB removal tool
07-30-09, 05:02 AM
Its gotta be a Mega-Exo Crank for it to work. Or any Hollowtech-2 shimano crank
07-30-09, 08:58 AM
Are the chainring AND the arms silver? Or just the chainring? I have a black FSA Gossamer with the MegaExo bb, and I am going to replace my outer chainring with a smaller one (46t). I discuss it in this thread (http://www.bikeforums.net/showthread.php?t=565993). The current is black, and I definitely wanted the replacement to be black as well for cosmetic reasons. This is why I chose the Sinz brand chainring, since they had a good selection in black. If this is what you need to do, wait a few weeks and check my thread, as I will be posting how it goes after I install the new ring.
If you need to replace everything, I guess the easiest thing to do would be to buy a black FSA Gossamer crankset. Then it is just a matter of using an allen wrench to get the old one off and put the new one on if I remember correctly. (I removed the crank in an REI bike maintenance class a few months ago). But, a new Gossamer crankset is around $160 I think.
CCrew, why does he need a external bearing BB removal tool if he is just replacing with another Gossamer crank? Can't he just leave the BB in there?
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