Jurca Gnatsum

The Jurca Gnatsum is a French homebuilt near scale replica aircraft based on the North American Mustang.

Design & Development
The Gnatsum is a low-wing cantilever monoplane an enclosed single-seat cockpit and manually retractable tailwheel landing gear based on that of the Jurca Sirocco. Suitable for a number of engines around 200 hp, plans for the Gnatsum are available as the 2/3 scale MJ.7  and the 3/4 scale MJ.77, as well as the M.J.70 full-size representation. All versions are constructed from wood with fabric covering, and manufacturing rights to the kit aircraft were acquired by Falconar Avia. although the company does not currently offer the aircraft design.

Some of the engines suitable for the MJ.7 Gnatsum series are:-
 * 200-hp Ranger 6-440C-5 inline engine
 * 125-hp Menasco C4
 * 130-hp de Havilland Gipsy MajorI
 * 125 to 160-hp Rambler aluminum block in-line 6
 * General Motors aluminum V-8

Variants

 * MJ-7
 * 2/3 scale variant


 * MJ-7S Solo
 * Single-seat advanced trainer version of MJ-7, the under-belly scoop inherited from the Mustang design was removed.


 * MJ-77
 * 3/4 scale Mustang variant that requires an engine of 250 to 600 hp.


 * MJ-70
 * Full-scale variant (under development in 1996)