Angular contact bearings for Easton Haven?
I originally posted a similar question in the Ibis forum but figured this is a more appropriate place:
I bought an Easton Haven wheelset last year and I've put less than 400kms on it. From pretty early on I noticed that the rear wheel would develop a slight amount of side to side play that required snugging down of the pre-load adjuster, but was always very careful to snug it down just enough to remove the play without causing any binding of the bearings. As the season progressed I noticed I had to do this almost every other ride and towards the end I could no longer remove the play. It was never very clear if the bearings were developing play, or the pre-load adjuster was perhaps loosening up. Anyway at that point I realized that the bearings had become a bit rough and after further inspection I found that the drive side 6902 bearing was the main culprit, but after replacing it there was still some play and roughness so I popped in a new non-drive side 6901 bearing also. (As an aside Easton sent me replacement adjuster which I installed at the same time and this one seems significantly tighter fitting).
So this all got me thinking about the design of a hub that depends on placing pre-load on a type of bearing that, as I understand it, really isn't meant to have significant side loading. Would replacing the current bearings with angular contact bearings be something to consider if the replacement bearings start to develop the same problem again? From what I understand angular contact bearings make a certain degree of sense in a wheel hub, as long as it is designed to take them and it seems the Haven hub design with the pre-load adjuster is exactly what is needed for angular contact bearings to work properly. The only thing is I've never used that type of bearing before so I don't know if there are downsides like maybe too much rolling resistance or the like?
79xx series are the the angular contact version of 69xx series bearings and I see I can get 7901 and 7902 Enduro bearings pretty easily. Anyone with experience doing something like this or any general thoughts on angular contact bearings would be appreciated.