Search for [Engines] found the following free plans
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A search for model engine plans on a hobbyist archive returned 45 free downloadable plans for model aircraft engines, spanning designs from 1937 to 2022. The collection includes notable entries such as the 1939 Belmont G9 (9.247 cc spark ignition), the 2008 Black Mamba 049 glow engine by Ron Chernich of Motor Boys International, and Chris Boll's BollAero line, including the 2014 BollAero .49 glow and the 4.4 cc BollAero Major 4.4 diesel featured in Aviation Modeller International in January 2011. Other contributors include Ed Holly, whose 2.5 cc Holly Buddy diesel appeared in Aeromodeller in January 2019, and a 2022 Holly Buddy Twin (5 cc) co-designed with Patrick Strobel. The listings span three ignition types—diesel, glow, and spark—with displacements ranging from 0.015 cu in (Clanford Clan, 1976) to 14.3 cc (Felgiebelmotor FG2, 1984). The archive displays 24 of 45 plans on its first page, with the remainder accessible via pagination, and offers multiple viewing formats including cards, extended, and text-only layouts.
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Named in this story
Motor Boys International, Model Aircraft Supplies, International Models, Electronic Developments, Gotham Hobby