In support of an official event 

The Museum will be closed Sunday, May 25
In addition, the Fourth Hangar will be closed Saturday, May 24

Access to the Presidential Gallery will be limited from May 15 to June 5
 

Roberts Model 4-X

This four-cylinder, water-cooled engine was made by the Roberts Motor Co. of Sandusky, Ohio, around 1910. Roberts used secret alloys it called "Aerotite" and "Magnalium" to enhance performance and reduce weight. The motor, weighing 170 pounds and developing 50 hp, was used in some Benoist and American-owned Bleriot aircraft. It cost $1,500 by mail order when it was new.

Click here to return to the Early Years Gallery.