Single Strings and bearing

[Ron Nossaman]

>
> What I mean is that I'm adding some half sized in gauge so that I will be
> adding hitch pins to accommodate a single on each of the lowest six unisons. 
> The wrap raises the string level by the diameter of the wire and it's just a
> bit more than the bearing at that end of the tenor bridge.
>  
> David Love


What's a single on the tenor bridge? And how does wrap affect bearing, anywhere
at all?

Ron N