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Nurse, I need 5 cc's of synthetic. Stat !!(6 posts)

Nurse, I need 5 cc's of synthetic. Stat !!AllUpHill
Jan 28, 2004 8:27 AM
Dang "sealed" cartridge headsets. Not sealed well enough to keep the grease in and the elements out. Sealed too well to give 'em a proper repack of grease.

And, in my case, not replaceable. Grumble grumble.
Best five bucks I ever spent....Cory
Jan 28, 2004 9:44 AM
A few years ago Nashbar offered some spiffy Teflon lube, developed by Boeing, I think, in a syringe like that for $12.95. I had a gift cert with some money left over, so I ordered one. Worked fine, but it was too expensive compared to my lube of choice (boat trailer wheel bearing grease, $5 in a 1-pound tub). Apparently the stuff didn't sell, because they cleared it out for 99 cents. I bought what the guy said was the last five syringes they had and I've been using it ever since. It's great stuff
I've got a few cc-s of that stuff left myself! nmMShaw
Jan 28, 2004 10:35 AM
Any idea what gauge the needle is?AllUpHill
Jan 28, 2004 10:50 AM
I'm using a 16 gauge (big honking bovine / equine size) and something a little finer would be handy. But I'm not sure if grease will go though something much smaller.
re: Nurse, I need 5 cc's of synthetic. Stat !!jw25
Jan 28, 2004 12:06 PM
Ummm, what kind of "sealed" bearings are they?
The true sealed cartridges with rubberized seals can be opened pretty easily, using a thin knife blade or screwdriver. Once both seals are off, they can be flushed with solvent and repacked, and even worn bearings can be brought back to life temporarily this way.
The "sealed" cartridges used by Cane Creek and others for headsets, and from the picture I think that's what you've got, are just two races held together by a thin metal flange. Pry out the flange (it's the shiny ring, usually opposite the tapered race), and the races come apart, revealing the loose bearings.
The last few headsets using these bearings, I've opened before installation and replaced the grease with good Progold EPX. This seems to keep them smooth through my yearly checkup.
re: Nurse, I need 5 cc's of synthetic. Stat !!AllUpHill
Jan 28, 2004 6:02 PM
Thanks. I am taking the top rubber seal off to apply lube to the bearings. It works fairly well with the help of the syringe.

The lower seal seems more difficult to remove, and I'd rather not disturb it (looks like I might not be able to put it back properly) since it's the only thing between the road grunge and the bearings, and a very flimsy thing at that. I've never found the thin metal flange you mention. I've poked at the thing numerous times w/o finding any way to get the races apart. The lower bearing isn't a Cane Creek to my knowledge -- some unidentified piece of junk Trek spec'ed for the lower headset on this frame.