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FSA Warning(5 posts)

FSA Warningharry hall
Sep 11, 2002 5:21 PM
FSA--a newer company, designs stuff here, makes it in Taiwan. Light, attractive cranks, smooth turning bb's, there's just one little problem--if you buy an ISIS system of theirs, insist on steel spindle bolts. Looky here--hollow, relatively thin walled bolt, fine thread pitch, needs to be brought up to a high torque setting. This is NOT an application for an aluminum spindle bolt. Steel? Perfect. Ti? If you must. Aluminum? Stupid, irresponsible, fraudulent. Rotten way to save a few grams. Steel is real.
Dramatic for a bolt, but those do seem to be a problem.Bianchi4Me
Sep 11, 2002 8:16 PM
It seems a bit dramatic to put "FSA Warning" as your subject line because you're having an issue with a bolt. Might be a little more reasonable to mention that your "warning" is relating to just the aluminum bolt, since a blanket warning might tend to damage a company's overall product reputation.

Supporting your concern, we had two folks on MTBR also report problems with these aluminum crank bolts, including having one shear prior to reaching the recommending installation torque. Individual stated he pre-seated the crank using a steel bolt, and was using a torque wrench to install the aluminum one. So, it does seem like a FSA Aluminum Bolt Warning might be in order.
Dramatic for a bolt, but those do seem to be a problem.harry hall
Sep 11, 2002 8:55 PM
Whatever; highly torqued fasteners are a really bad thing to use aluminum for!
Dramatic for a bolt, but those do seem to be a problem.str8dum1
Sep 12, 2002 8:41 AM
You dont use the Al bolt to torque the crank arms on. All its there for is make sure the arms stay on. Very little torque
Dramatic for a bolt, but those do seem to be a problem.harry hall
Sep 12, 2002 11:52 AM
Two things: I know that except that FSA uses an odd thread (can't use a Shimano bolt for torquing, for instance) and does not supply a steel torquing bolt with cranks and bottom brackets. They should do the right thing and drop the aluminum bolts--unfortunately they're a pack of crooks who'd rather advertise the crankset and bb as a few grams lighter than put the right materials in the right places.