Builder Spotlight Kitfox Super Sport Resurrected by devotees of the design, the Kitfox Super Sport offers STOL performance and fun flying; by Ed Wischmeyer. Dancing in the Clouds John Proctor rose to the challenge of putting a homebuilt biplane on amphibious floats; by Ishmael Fuentes. The Outside Job Aftermarket engines--clones, if you will--have taken on a life, and identity, all their own; by Marc Cook. 2007 Engine Directory In an expanding market, there are lots of new choices; compiled by Julia Downie. The 18-Day Sportsman: The Reckoning Any project will ultimately cost more than you think. So think bigger; by Marc Cook. Completions Builders share their successes. Shop Talk Engine Beat HKS: a four-stroke twin that makes sense; by Tim Kern. Aero 'Lectrics Hey, hey 123. . .let's all use BNC; by Jim Weir. Designer's Notebook Wind Tunnel Understanding adverse yaw; by Barnaby Wainfan. Exploring Around the Patch Volts and amps, ones and zeroes; by Marc Cook. What's New The new Van's RV-12 flies, and aviation e-Books arrive; edited by Mary Bernard. The Inside Scoop Don't let your engine monitor data go to the dogs. Here's how to interpret it; by Walter Atkinson. Vital Signs Improve safety and save money with high-tech engine monitoring equipment; by Cory Emberson. Light Stuff The Thorp 211 gets a second chance as an LSA; by Dave Martin. Kit Bits Contributors Letters Sportplanes Advertising Section List of Advertisers Builders' Marketplace The Classified Builder Kit Stuff Drawing on experience; by cartoonist Robrucha.