![The Granville Brothers Gee Bee R-6 “Q.E.D.” being serviced before the 1934 MacRobertson Air Race; Mid America Flight Museum flies a replica of this aircraft. [Credit: Wikimedia Commons]](https://www.kitplanes.com/wp-content/uploads/2026/07/Screenshot-2026-07-17-at-3.09.57-PM.jpg?w=324&h=160&crop=1 "Vintage in Review Returns to AirVenture 2026 With 90-Year-Old Flyers")
![[Credit: EAA]](https://www.kitplanes.com/wp-content/uploads/2026/06/vintage-in-review-herb-clark.jpg?w=324&h=160&crop=1 "Vintage in Review Returns to Oshkosh: Five Days, Five Stories, and a Living OX-5")
In Case You Missed It
To Launch a Light Sport
This month builder Bob Fritz searches for a better alternative to last-century circuit technology for his panel and finds it in a Polyfuse.
Build It Better: Knowing how it works
How do you reconcile a discrepancy between two gauges in your aircraft, say, a float-gauge reading and fuel-totalizer data? It helps to have a deep understanding of your systems.