And other testing has demonstrated lower drag for the Diehl gear (when properly faired) than you'd get with the retracts. Having said that, I've seen some well-faired retract gear installations, but they are rare.
One advantage of the retracts is that off-field landings have a little something to roll on, adding a level of protection for the bottom of the firewall, which is worth something... Mark Langford m...@n56ml.com see experimental N56ML at www.N56ML.com