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Campy HiddenSet -- Is it just me, or does anyone else ...(10 posts)

Campy HiddenSet -- Is it just me, or does anyone else ...mja
Apr 20, 2003 1:44 PM
Sort of a poll question: Is it just me, or does anyone else have a lot of fore/aft play in the HiddenSet? (The headset is installed in a Cannondale CAAD5 frame.) This results in rattling and knocking when riding over anything but the smoothest pavement. (This is not my first headset install!)

Same here,Leroy
Apr 20, 2003 2:51 PM
I have a caad5 w/ hiddenset that I have to remind myself to tighten up all the time. I usually forget to do it.
sounds bad...C-40
Apr 20, 2003 3:49 PM
Even the slightest amount of play will quickly destroy headset bearings, but with the integrated design, play in the bearing seat could also damage the frame.
best to get that checked at the LBSweiwentg
Apr 20, 2003 4:16 PM
I don't mean to question your wrenching skills, but you probably need that looked at. like C40 says, you stand to ovalize your headtube, which is bad.
I had that problem on the ZS headset in my TCR frame - I didn't get "a lot" of play, but I got some. from what I remember, the lower race had been slightly ovalized, and the bike store had to ovalize my crown race to identical dimensions - it's fine now. if you can get your hands on a set of vernier calipers, I'd check to make sure your top and bottom races are perfectly round - that's what my LBS did.
On the other hand.... if you are orig. owner...russw19
Apr 20, 2003 4:47 PM
Let it go and get a new Cannondale frame every two years under warranty. So far they are good about replacing frames that have the headtube ovalize and they are seeing quite a few of them. But yet they still haven't changed the design yet. Maybe eventually they will, but your frame is still under warranty... when you think it's time for a new paint scheme, send it back.

Looked at it last nightLeroy
Apr 21, 2003 4:46 AM
after reading this thread. I took the headset apart, and sure enough the bottom set [holder and ball bearings] of bearings was bad. The little ring in which the bearings are set is deformed. One side of the ring was crushed and would not hold the ball bearings in at all. The top set was ok. Neither looked oval. They are still inside round races. Even though the two sets are different sizes [bottom bearings are a little smaller] I reversed them and put it back together, the thinking being that I'll let the uppers [larger set - now on the bottom] take the hit for a little while until I get replacements. Incidently, I found that Branford Bike sells replacement bearings for about $16.00 per set. There was no appreciable damage to the frame and the races weren't deformed. Looks like de minimus to me. I can just keep replacing 'em as long as they wear out. The ride is so good on the caad5, I can live with it. Maybe the caad7 in a couple of years time won't do this.
Looked at it last nightmackgoo
Apr 21, 2003 7:02 AM
Although not familliar with the hidden set so I can't say for sure. Just looked at the Campy site. If you truly have the hidden set bothe bearing assemblys should be the same size bearings, the bearings only differ in size based on steerer tube size. Also depending on steerer size the orientation of the top and bottom bearing retainers is different.
What I was going to say earlier was that in my experience although not with hidden set, the larger size bearings are on the bottom. THe fact that you say you have two sizes puzzles me.
You're right!!Leroy
Apr 21, 2003 7:23 AM
The set came with two different size bearings. This is a 1" hiddenset and branford bike lists the replacements as EITHER 5/32 top and 3/16 bottom, OR 5/32 both. The set came with two different sizes so I'll go with that.

Looks like I had them in backwards. So this is my mistake, not campy's. Considering I installed them backwards, kudos to Campy for holding up this long! No wonder it feels better even with the shot holder on top. I'll just replace the top set of bearings and see how we do.
You're right!!Rusty Coggs
Apr 21, 2003 8:02 AM
So much for the 'this is not my first install' business. I always check the instructions no matter how much I think I know.The learning process never ends.
You're right!!Leroy
Apr 21, 2003 10:51 AM
Actually the poster who started this one had installed 'em before - I just chimed in. My excuse is that I bought the frame/fork from gvh, and no instructions were included. Of course I have the Campy website on 'favorites', but did I check it out? not... If I hadn't been in such a hurry it might have occurred to me to install the larger bearings on the bottom - or I actually might have read the instructions What is it? RTFI ? Good thing about this forum is that I never would have caught the mistake if I had not read it here. ;-}