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Hartzell Engine Tech Acquires E-MAG Electronic Ignition Systems
...engines. These systems are known for their lightweight construction and improved engine starting, idle quality, and partial-throttle performance. Several engine manufacturers offer E-MAG ignitions as factory options. E-MAG Future Hartzell...
Custom Heat Exchanger Fabrication
The Edge Performance 912STi (a modified Rotax 912) in the SR-1 race plane is by air-cooled engine standards a somewhat complex engine. I’m sure it’s added a year to the...
Eating the Elephant—Part 3
...left-side panel with the engine levers was sunk in a real-estate fight. Sure, I had room for the fuel pump switch there, but not much more. Time to rethink. How...
RV-10 Paint Scheme Paints a Family Story
...and I were kids, a frequent weekend outing was to fly White Wings. They are paper airplanes designed by an engineer and launched by as many rubber bands as you...
Replacing Studs When Switching to P-Mags
Are you changing your ignition system from regular mags (with impulse couplers) to P-Mags? You’ll probably find that the studs installed on your engine are WAY too long—you’ll be removing...
Oil Filter Testing
...25 grams of dirt, carbon and metals, in bits sized from 2 microns (µm) to chunks. Capacity buys time. A healthy engine supplied with clean intake air has little need...
Risen — The Master of Efficiency
...just near the wing’s mid-chord with the leading edge of the canopy actually overhanging the Rotax’s ring-style engine mount. Think of a modern front-engine car whose powerplant is stuffed well...
Wheeler Express—Yesteryear’s Homebuilts
...composite airframes, and the two occupants of Express N200EX walked away with minor injuries after slamming into several houses after engine failure. No such luck in the crash of the...
Build, Test, Refine and Fix—Part 4: Stall Characteristics
...an airfoil optimized for minimum drag rather than benign stall characteristics. After a successful takeoff, the engine temperatures began to rise and the pilot elected to land rather than allowing...
AI Amuses, But It Can’t Replace Aviation Experts
...airplanes. Some were rather amusing, including a bubble-topped twinjet with massive turbofans and wings that would hold about enough fuel to get the engines started and the airplane driven off...
In Case You Missed It
The Ultimate Upgrade
As Martha and Wendell Solesbee near completion on their Lancair Evo, they encounter the minor setbacks that make the “90% done, 90% to go” expression ring true.
Flight Review: CGS Hawk Arrow
Chuck Slusarczyk’s lightweight Hawk Arrow can hold its own as a solid cruiser, even in the realm of so-called “real” airplanes. By Ed Wischmeyer.
Ye Olde Slip Roll
This month’s project is a follow-on to the Pietenpol muffler that was the subject...
Building on a Budget
Building his VW-powered Zenith CH 701 taught Wayne Clagg a lot about the consequences of powerplant choices… and much more.