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This month, author Jim Weir lays the groundwork for a solar battery charger, complete with preliminary circuit board considerations drawn from a rats nest and details about how to order a pre-fabricated board.

Jim Bede’s BD-5 had, by the late 1980s, still managed to hang onto its...

Exhaust systems do more than just get air into and out of aircraft engines. Exhaust system design, in terms of exhaust pipe length, diameter and tuning, affect the efficiency and performance of the engine, for better or worse.

In a parallel life of mine—auto journalism—shop talk occasionally got around to just how...