Markus schreef:

I do remember reading something a little while back on the SH website
about them having modifed a Nimbus 4 for high altitude record flights
in Argentina. If I recall correctly they did modifications (probably
some mass balancing) to counter the onset of flutter as a result of
high TAS at altitude.

Markus

Yeah; it's over he
http://www.schempp-hirth.com/index.p...r]=1&tx_ttnews[tt_news]=48&tx_ttnews[backPid]=87&cHash=3f1ff7d791

"The maximum speed at high altitudes heights could be significantly
increased through modification of the Nimbus-4D/DM. Fortunately these
advantages could be realised this year with record flights in the waves
of the Andes in South America"

I'm curious whether they only placed lead, or the complete wing and
tail is redesigned.