Grotrian # 20985

[John Delacour]

David Love wrote:
> There was also a recent discussion on the list regarding a Schiedmayer that
> also had this feature.  It certainly adds mass.  Since the underside bridge
> is deeply notched to accommodate the ribs I'm not sure how much stiffness it
> adds.

This question was also addressed in the discussion, where I pointed out 
that it does indeed add much stiffness, since the ribs run _through_ the 
bridge. It's all in the archive.

JD