First …What you write is what I did think in the first place.
Second … don’t worry about me understanding the Campagnolo UT system.
In my Campagnolo Record UT BB it works perfect with the 61805 ceramic hybrid bearings. But I did read the bearing size from the invoice. When I find time I will measure the bearing size myself…. It could be a wrong specification on the Invoice.
Just to be clear about this.
My Campagnolo Record UT BB is functioning perfect containing 61805 bearing size. It spins at least as good as a Phil Wood square taper in fact even better. Actually that is exceptional because most UT BB installations don’t spin that well (plus my ceramic hybrid bearings use seals on both sides!!!!!). So there are no signs of extreme bearing drag. In fact it looks like the bearing drag is a lot less then on the standard bearing installations. Needles to say that on all installations and re-installations of Campagnolo UT BB crank sets I did, the facing of the bracket. It was done by me and perfect.
After intensive use over 12.000km of my own Record UT crank set there is no sign of wear at the wave washer
. That is rarely seen because mostly there are signs of wear like the photo shows. This indicates that the preload pressure on the wavy washer
in my own UT system is not too high, and that there is virtually no lateral play (which actually is a good thing). The ceramic hybrid bearings from CeramicSpeed also showed no sign of play and wear and these are spinning like new I just cleaned these and re-greased.
Actually I also (like Rogue Mechanic did) added shim washers several times at UT systems on bikes that belong to friends after their problems couldn’t be solved by their LBS. And it always worked out fine (I did it already before I found the Rogue Mechanic website). The lateral play did disappear. I also added 2x 0.3mm shim washers in between the right outboard cup and the bracket one time on a Tomassini frame. That is also turning out to be a very good solution and solved the problem.
In all cases the bracket shell was within the limits (I take measurements all the time) and that is for Italian as well as BSA threaded bracket.
When I find time I will dismount my own Campagnolo UT BB and cranks unit and measure my bearings and I will check if your suggestion that the lock ring clip could not be installed. Mine is fitting well. When I follow your theory that would indicate that my bearings are not 61805….. and the size mentioned on the invoice would be wrong. We will see. I will be back on this.
I don’t agree that Roque Machanics post is crap.
IMHO it is a good post
that gives the right insight in a problem that often occurs after installing Campagnolo UT BB and crank set.
I have encountered the problem several times. And I am not even running a LBS, but just a lawyer with a hobby…..
By the way; this problem only occured on UT crank sets I did not install the first time but that where installed elsewhere…..LBS or OEM. The ones I did install in new or used frames are all O.K.