Join Date: Mar 2009
Bikes: '74 Alex Singer -'81 Mercian - '72 Motobecane GR - '73 Legnano - '6? Dawes Galaxy - '87 Masi GC
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Trouble with my balls slapping !
I opened up a 1981 Campy Grand Sport read hub to change the bearings and replace the grease and discovered a bad cone. I wasn't able to find a replacement GS cone but was able to find Record cones. Problem is, that the GS and Record cones have a different profile and use different size bearings.
The GS cone is more shallow and uses a smaller bearing.
The Record cone is more concave and uses a bigger bearing.
I did a lot of internet and forum searching to see if swapping was possible, but found no definitive answer.
So I used the Record cones and larger bearings but left the original cups in the GS hubs.
Problem is, I can now hear the bearings slapping into each other. I believe I have the bearings adjusted correctly.
No play with skewer tightened and wheel spins freely: a little play with skewer loose.
Anyone have some knowledge on this?