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servicing Record hubs(6 posts)

servicing Record hubsCrankist
Oct 7, 2003 1:44 PM
Is access through the lube port really a good method of greasing the bearings? If so, is a hypo with light grease the best way or is there a special tool?
(I suspect that pulling, cleaning, and lubing the bearings is just a better method, given the ease of adjustment.)
Good? Not really,TJeanloz
Oct 7, 2003 2:15 PM
Greasing via the grease-port is really sub optimal. If you know how to do the cup-and-cone method, it is much better.
I read someplace that...TFerguson
Oct 7, 2003 3:56 PM
the original reason for the grease holes in hubs was that some of the old time mechanics would use oil instead of grease to give the hub just a little bit less friction. They would have to re-oil them every ride, hence the grease (oil) holes. They were never intended for grease. The holes migrated to consumer hubs because, just like now, the cyclist had to have what the pros had even if it didn't make any sense.

Anybody else have any confirmation of this?

Yes, but only for Time Trials and hour records.MR_GRUMPY
Oct 7, 2003 4:22 PM
Other wise, you'd be changing hubs every month or so. It was the same for Bottom Brackets. Oil only.
Don't grease through the holeKerry Irons
Oct 7, 2003 4:49 PM
First of all, it's much better to clean everything and then put in fresh grease. Pushing grease through the center of the hub offers no guarantee that you've pushed out all the dirt. The grease takes the path of least resistance, and that is NOT a uniform flow through every nook and crannie. Further, you then are left with the entire space between the hub body and the axle stuffed with grease, significantly increasing the friction of the system. The lube port was put there to allow oiling of the bearings on track bikes and for special racing stages, like time trials. This was done only on such critical stages, and then the hub was repacked for normal use. If all you have is oil and you get caught in the rain, it's all over in a hurry.
Thanks all - helpful stuff (nm)Crankist
Oct 8, 2003 11:54 AM