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'02 Trek 5900 compatible w/Chris King NoThreadSet? Thanks nm(10 posts)

'02 Trek 5900 compatible w/Chris King NoThreadSet? Thanks nmAllen az
Mar 24, 2002 8:44 PM
Don't think so. The 5900 uses an integrated headset. (nm)Pedal Jockey
Mar 25, 2002 6:33 AM
re: '02 Trek 5900 compatible w/Chris King NoThreadSet? Thanks nmagilis ti
Mar 25, 2002 10:18 AM
have a 5500 02' with a chris king. as far as i know the only difference in frames is in the carbon not the set-up.
I stand corrected...but I'm very confusedPedal Jockey
Mar 25, 2002 12:20 PM
I just looked on Trek's website, and it appears that a no-treadset by King should not be a problem for installation the 5900 frameset. However, on Cycling News' review of LA's bike, they list a Cane Creek integrated headset is used, which I must be mistaking for a hidden-set.

Unless they changed,TJeanloz
Mar 25, 2002 12:47 PM
Through 2001, you could not use any headset but the Cane Creek one that was supplied by Trek. They might have changed that for 2002- but I haven't heard that they did.
Here's what I know ...AllUpHill
Mar 25, 2002 6:07 PM
I own a 2002 trek 5900. First, as I understand it, unlike what the Cyclingnews piece said, there's nothing integrated or embedded or "hidden" about the headset at all. Maybe I'm mistaken. I doubled checked the photo of Lance's to see if it possibly looked any different from mine. Nope. I can post a close up pic of mine if that would make things clearer to those of you who know more about all the integrated variations than me.

Second, what's non-standard is that the Lower bearing is of size 1-1/4 inch, while the top is a regular 1-1/8 inch. The steerer tube is conical. In contrast, the 5500 frameset uses a perfectly standard 1-1/8 setup. Only the 5900 is funky.

I think you can put on a regular 1-1/8 King threadless headset, but on the top ONLY. I know that some people have done this with their 5900, at least for 2001 models. If you're having problems with the included Cane Creek setup, I'm not sure if simply replacing the top portion with a King would be much improvement, as most of the load bearing is on the headset's lower portion.

The question still remains, as far as I know, as to what you can do about the lower bearing. King makes what's called their Devolution headset which is of size 1-1/4 inch, and I emailed them once to ask if they thought it would work for the bottom (i.e. just use the bottom portion of one). They said they didn't know any reason why not, but they did't really go into any detail.

I've also heard that the lower cup as it comes from the factor is bonded to the frame in some elaborate way, such that it needs to be sent back to the factory to be heated and removed should you ever need to. And that the lower race is bonded to the fork in some unusual way also. True or not, I don't know.

This topic comes up somewhat often as the included headset with the 2001 5900 was often reported to be troublesome. I've heard that they were going to fix whatever problems there were upon rolling out the 2002 models. I've had no problems at all with my headset for the six months I've had the bike. Adjustment is easy, and the bearing works perfectly. I've also not heard any other '02 owners complaining -- this issue mainly came up with '01 model owners who were having trouble.

Just passing along what I know, FWIW.

Just out of curiosity, are you asking 'cause you're having trouble with yours, or are you just researching because you're thinking of buying one, or...?
Thanks....Allen az
Mar 25, 2002 7:51 PM
Actually, I'm thinking of buying one. I asked 'cause I've heard some that people were having some problems with the Cane Creek HS, but I wasn't sure if it was the '01 or the '02 5900. I would have some $ left over from the bike (if I bought it) so I thought I should get a Chris King. I might go to my LBS to check out the bike, I thought I saw one through through window yesterday.

Thanks for your time,
I changed the top cup.weed
Mar 26, 2002 4:28 AM
I have a 2001 5900, which had a sticky headset. I could never adjust it quite right so I popped the top cup out and pressed in a King. Problem solved. The bottom bearing was not the problem.

The bottom cup is made by Klein. I have heard that this cup can't be removed, but it can be filed down flush with the head tube allowing a standard 1 1/8 cup can be installed. This sounds like a lot of work, but there isn't much aluminum there to remove. I'm sure this will void the warrantee. Plus you'll need to buy a new fork.
bottom bearingkey
Mar 26, 2002 10:04 AM
Have an 01 5900 and had a ton of problems with the top and bottom. The 02 is the same but they have improved the parts quality which does seem to help.

The top cup and bearing is a CC and they had some bearing seal issues, fixed now though. The bottom is actually a Trek/Klein and it is 1 1/4 ish... the top is standard 1 1/8, but problem is that the bottom bearings on the 01's first shipped where really poor, if you go to your local trek shop they will get you the new and improved bearing. The problem with mine after months of frustration and research is that if you ever get water/moisture in the lower it has no where to go. A king and most headsets have an area or way to drain fluid.

If you find a way to actually put a king on the bottow I would love to hear how it goes. That would solve any future issues.

re: '02 Trek 5900Chen2
Mar 27, 2002 3:11 PM
Having just replaced the Trek fork on my 5500 with an Ouzo Pro, I would be concerned with being wedded to the Trek fork. I'm sure it's a good fork but not necessarily the best now or in the future.