Singlespeed & Fixed Gear - Rusting Kryptonite NY3000 U-lock

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gcasillo
11-12-05, 10:15 AM
I don't have photos at the moment, because I left it at work, but I have a Kryptonite NY3000 U-lock that is suffering from rust. It will open, lock, and close, but it takes a great deal of force to open it once it's closed and locked. I have to bang the U part against whatever I lock my bike to in order to pry it open. It's nigh impossible to open with hands alone.

I don't know if it's rust, but I suspect it is. Is this common? Any ways to combat this preemptively or to restore a lock like this to normal functionality?

RobbieIG
11-12-05, 10:49 AM
I had a lock that was giving me similar problems, but I was still able to pull it apart with my hands. I just dropped some chain lube in the locking mechanism and it's been smoove like butter ever since.
r-dub
11-12-05, 11:42 AM
regular oiling of metal parts that are left out in the elements is generally a good idea.

LóFarkas
11-12-05, 11:52 AM
It doesn't have to be rust. Possibly dust and general dirt. Try to flush the cr@p out of it with thin oil.
crushkilldstroy
11-12-05, 12:49 PM
I had a lock that was giving me similar problems, but I was still able to pull it apart with my hands. I just dropped some chain lube in the locking mechanism and it's been smoove like butter ever since.


this is the correct response. do this and your lock will love you.
alanbikehouston
11-13-05, 11:27 AM
It irritates me how quickly Kryptonite locks develop surface corrosion here in the swamps of Houston. If the mechanism gets sticky, I flush out bolt area and the key area with WD-40. After that has evaporated and dried, I put in some lock lube from the locksmith shop. Work the bolt back and forth with the key. Soon it is working with silky smoothness.

Locksmiths sometimes suggest a different lube if your lock will be used in below freezing temperatures. If you ride in ice and snow, make sure your lock uses a "winter" type lube.