The Eracer, the Berkut, and the Aerocanard have retracting gear, I believe and that is
all except for a very small number of Longezes that have or had retracting gear.
I am NOT an expert (I am a biologist so I know very little about aerodynamics),
the following is just my opinion. IMHO I would not try to retrofit a Longeze with retracting
gear. Anything that you do, adds weight. The added weight is reflected by your having
to fly just a little more nose-up for just a little more lift. But that adds drag. So what
have you gained by the retracting gear? Proper streamlining of the main gear and wheel
pants will result in very little drag from the main gear (see back issues of the CSA newletters).
Anyway it would be a very long, hard project.
Bruce Hughes
