Hi Ray

Thank you for the answers, and pointing out two very important aspects that
I have left out of the equation.



Height of site and temperature would be to very useful information in order
to evaluate the data.



I live in Denmark, and here it is just a little bit less flat compared to
the Netherlands, so MSL would be the most relevant height of site. Average
temperature (spring, summer, autum) would be something like 15 deg. Celsius.


Steen

"Ray Hart" wrote in message
...


Is that 4,000 ft above amsl, or above site?

What ambient temperature etc?

My only experience of being towed by this type was
in (or should I say
on) a Primary, at a very steady 42 mph! I would be
surprised if it gave
acceptable performance for really high wing loadings
though.

Ray