crank issue

[Dave H]

Not sure of the correct terminology but.....this screw thingie keeps getting loose. Should I put a dab of lock tire on it or am I missing something.

 

[Dave H]

Since im at it. Same with this doohickey

 

[blackburn1973]

Don't think you want to go with Lok-Tite on either. Believe most manufacturers advise against it on the bolt into the BB. Try loosening the bolt on the crank arm, then snugging it up tight, then re-tightening the crank arm bolt.

On the quick release, how tight do you have it? Should get it tight enough so that it's some effort to close.

 

[mike_243]

most of these bolts have torque recommendations you should check that as well I had an issue on my SS crank arm getting loose until I torqued it to spec.

 

[Dave H]

I tighten the quick release so it takes a moderate amount of effort to close. I will the up the torque recommendations. Thanks

 

[Steve Vai]

The FSA cranks come stock with blue LocTite on that bolt. You can dab it without an issue. Make sure the 2 bolts on the side of the crankarm are tight as well.

-Jim.

 

[ChrisRU]

I have the same issue with my fsa cranks. I need to use blue loc tite and crank the crap out of the pinch bolts on the crank to keep the cranks from loosening up. Blue loc tite is fine for most uses, it just keeps things from working loose. Just stay away from the red.

 

[BShow]

Screw thingy and doohickey are definitely the correct terms for those parts...

For the cranks, that screw is what sets the preload on your bearings. You should loosten the two clamping bolts on the crank arm first, then snug up that "screw thingy" - but don't BMX tighten it. Snug, but not too tight. Ideally you'd use a torque wrench, but I doubt that you have one easily accessible. Spin the cranks and make sure that they're not binding up. Then clamp down the two bolts on the crank arm. Use the loctite if you have it. If not, you should be good to go if you set it up properly.

The Doohickey, I would not use loctite on. But that said, if you're using it properly and it's coming loose, then there is a problem. I'm not familiar with that particular doohickey, so maybe somebody else can chime in for you... if not, I'd take it to a shop.