Film is a series of 14 flights detailing the 4th trim session for the rubber-powered free-flight model of the 31" 1914 Martinsyde S.1. The model has a smaller prop & a new pair of wings, swapping out undercambered wings for ones with sliced ribs and flat bottoms. The 31" model was built by Tom Hallman. Filmed at Barron Field in Wawayanda, NY, May 14, 2021. Music via motionarray.com.

Model based on this plan: [ Ссылка ]

Article on the use of dethermalizers: [ Ссылка ]
Badge Classic DT & spring (at the bottom of the page): [ Ссылка ]

Here are some photos of the simple, adjustable thrust plate used on the Martinsyde & Seafire.
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Flying Aces Club merchandise: [ Ссылка ]
Center of Gravity merchandise: [ Ссылка ]

For more info on free-flight rubber-powered models, check these websites:
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Outerzone - [ Ссылка ]
National Free Flight Society - [ Ссылка ]
Mike Stuart's Flying Scale Models - [ Ссылка ]
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