While Udo doesn't state the numerical value of the difference, I bet it's
only 30-40 ft.

That makes sense, considering the expected 3-400' delta h. So this would be
a tie, and quite satisfying, considering that everybody I know in the
soaring world, including H. Reichman ;-)), believes that the ballasted
glider would go noticebely higher. I never tested it, but along with anybody
that did a little maths, I could not force-fit the extra ballasted height
into the equations. The debate is still on, and we deeply wish that someone
could run a "scientific" test. This is fun!!!
Bravo Quebec