Alan Arps, fourth owner of a Starduster SA-100 that had seen better days, treads the fine line between updating the plansbuilt design and keeping it true to its era.
If you need a horn to sound when the airspeed drops below a certain level or when the power is cut and the landing gear is still up and locked, an electronic circuitry solution is the lightest, most reliable and most cost-effective way to go.