Dave Diehl is a 40-year communications professional. He owns and flies an RV-4 based in Hagerstown, Md., and is currently building an RV-12. He is the author of an upcoming book about Dick VanGrunsven and Van’s Aircraft.
Columnist Jim Weir comes up with what he thinks is the optimal design for getting power from the 12-volt aircraft battery to the LED without wasting any.
Keep it cool: That’s the secret to success with the Jabiru engine, which will reward your efforts by being a simple, powerful and smooth-running powerplant. Dave Prizio offers some suggestions for Jabiru care.