1938 Military Aircraft Corp. HM-1 – 24in wingspan


The Military Aircraft Corporation HM-1 (or MAC-1) shares it’s design lineage with the Gee Bee R1 as the MAC-1 was designed by the Gee Bee’s chief engineer Howell “Pete” Miller.

This model was designed and built in 2006 by Tom Nallen2 to compete in the Flying Aces Club Thompson Trophy mass launch events.  A durable and consistent flyer, the original model has won and placed in FAC Thompson Trophy mass launch events many times over it’s 10+ year competition career.     With retract landing gear and no rigging, this is a straightforward to build and fly high-performance rubber-powered flying scale model of one of the Golden Age of Air Racing’s big radial engined speedsters.

Qualifies to fly in FAC Scale, the FAC Thompson Trophy Mass Launch and FAC Golden Age Monoplane  events.


Designed by noted Free Flight sport and scale model airplane designer Tom Nallen2, this black and white plan includes full-sized top, side and front views of all components such that they can be built directly over the plan.  Stick and sheet balsa stock dimensions are indicated on the plan and all sheet balsa parts are printed full-size for use as templates in cutting out accurate parts to construct the model framework.  This is an Intermediate-Advanced level model to build and fly and is a good follow-on to a low-wing, former and crutch-built fuselage rubber powered free flight scale, or sport model.

Model construction plan fits on a single Architectural D (24 x 36 inches)  sheet.  Plan download or print options available.

Additional information

Plan Delivery

PDF Download, Printed 20# Paper

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