Sigma Thread
roys,
I suggest you start a new thread entitled "Sigma".
The flaps-down profile is amazing. It would be great to see some pictures of the wing before and after Dave Marsden's rebuild.
I have some questions for your Dad. What was the main reason for the performance being lower than expected? Was it the flap seals as I have read and if so, what was the issue?
Last edited by India Four Two; 12th Dec 2010 at 23:35.