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5900 Headset(15 posts)

5900 HeadsetWild Bill
Nov 28, 2001 5:41 AM
Is there any Trek 5900 owners out there who have changed their headset? I am talking top and bottom. If so how did you do it and what kind of headset did you go with?
Please reply only if you have a Trek 5900 and have replaced the headset.
Wild Bill
re: 5900 HeadsetPsyDoc
Nov 28, 2001 5:53 AM
This topic was discussed a few weeks ago and you should be able to find it by doing a search. The gist of the discussion, though, was that you cannot replace the bottom part of the headset.
re: 5900 Headsetwcon
Nov 28, 2001 11:28 AM
I was looking or the same information. From what I understand the bottom cup is bonded into teh frame and you would have to have Trek take it out and bond in a normal 11/8 sleeve for a standard headset. This means of course that you cannot use the Aeros fork.

I'd like to know if anyone found a solution using the headset cup and fork as it is with a better headset.
Nov 28, 2001 12:10 PM
Your qualification means that you should receive exactly zeros responses. Shoot us.
My friend works at TrekJS
Nov 28, 2001 1:24 PM
In the R&D department, they have a solution in the works and I would tell you about it but I don't own a 5900, sorry.
yeah, well my dads an astronaut. so there.. (NM)naf geezer
Nov 28, 2001 4:28 PM
Nov 28, 2001 3:48 PM
Why would anyone buy one of these frames given the way Trek is roping you into planned obsolecence ala the auto industry?

Oh yeah, Lance rides one. Wonder what the USPS does about the headset problem. Probably just pull out another frame and toss the old one in the dumpster.

It figures it would take the Trek R&D dept. some time to figure out a problem that the Trek R&D dept. created. Anyone see a pattern here? Where's Mr. Nader when we need him?
What makes Trek so unique?jaybird
Nov 29, 2001 5:31 AM
There are countless other manufacturers with the integrated headsets. Does this mean that you cannot change any of them?

Aren't the headsets made by Campy and/or Cane Creek? and are they designed soo poorly that they need to be replaced with in 3-4 years?
What makes Trek so unique?grzy
Dec 4, 2001 4:46 PM
Well - there aren't "countless other manufacturers with the integrated headsets" in fact you could probably count them on one hand. They tend to be the large mfr.s looking to cut costs. What makes Trek unique is that they've over sized the lower race and bonded it into the frame. Just try replacing it. Ultimately one has to ask - who is benifitting from and integrated headset (hint: it isn't the consumer).

There is nothing magic about Campy or Cane Creek - Campy has repeatedly proved that their low end can be pretty low. Cane Creek is all about low end stuff with some marketing hype to bring the perception and price up. Cane Creek headsets that are so common on many bikes these days are pretty much garbage. At best you can get them to work OK, but at worst you can't get them dialed in at all.

Only one company offers a 10 year warranty on their headset: Chris King. Now wouldn't it be nice if you could get a high end bike from say Trek and equip it with only the best components? You can no longer do this - it's like the auto or computer industry - they only want you buying their stuff which includes their mistakes.

My original point was that some pretty asinine things get done in the bike industry and the consumer seems to forget and let the bike co.'s foist more crap on us again and again. Well, many of the longer term consumer types have seen it over and over again and are justifably skeptical.
Unless I'm mistaken...Twilight
Dec 2, 2001 10:11 AM
That fork is a Klein Aeros. If they use the same bearings on the Trek 5900 that Klein uses in their QPro bikes, there isn't any reason (aside from not liking the fork at all) to need to replace the headset. My QPro is now two years old, the headset is still just as smooth now as it was when I took the bike out of its box.

In the event the bearings do go bad, a full replacement set (for the Klein at least) is available for less than $30.
Unless I'm mistaken...Wild Bill
Dec 2, 2001 3:47 PM
This may be true, but the reason I want to change headsets are to stop the water from entering my frame! Also I don't care as to what kind of fork it is as long as I can replace the bottom cup with a better one.
Are you sure its coming through the headset? (nm)Twilight
Dec 3, 2001 4:32 PM
Are you sure its coming through the headset? (nm)Wild Bill
Dec 3, 2001 5:54 PM
100% it comes in the headset. If you wrap the top and bottom water!!! If you don't you get water, and depending how long you ride will depend how much water you get. The only way to get it out is to hang the bike by the rear wheel or remove the seat post and rotate the frame one way or the other to get it out.
Is this convincing enough!!!!
Are you sure its coming through the headset? (nm)wcon
Dec 4, 2001 1:19 PM
I have a 5900 and also have had this issue. The water in headtube eventually caused the lower bearing to sieze. I ordered a replacement bearing from Trek and it wasn't sealed like the original, so I ordered a sealed, precision one from a bearing supplier. It works o.k. but the steering seems to have some stiction.

The difference in the Klein Q-Pro (which I also owned for 3 years) is that the top bearing is also sealed so it cannot leak.

I've been talking my Trek dealer and there really is no way to use an aftermarket headset on the lower portion without having Trek disbond the lower cup an bonding in a 1 1/8" sleeve so a normal cup can be pressed in. Even then, the only thing that sems like it will allow the use of the Aeros fork is a King Devolution.

I have not received an answer as to wether or not the cup removal would require a re-paint. If it does not, I'm going with a standard headset and using a Reynolds fork, mainly to avoid being stuck at a race with a bad headset or fork and not being able to get replacement parts immediately. It's too bad because the frameset rides so well.

Hope this helped.
F'ing Beautiful.grzy
Dec 6, 2001 5:34 PM
Will those cheeseheads ever quit finding new and interesting ways to piss people off?

Why not take them up on their warranty -" of defects in materials and workmanship"? Actually, don't bother, they'll find a way to weasle out of it - just like they did with the '96 nude OCLV's and the pealing clear coating. When are they ever going to own up to their screwups? they got ride of the Rolfs and their ability to collect water, so they must have felt a need to make up for it....