A surprise for me is that I found the Carburator on BGX-1 to be the almost same with the Carburator of ducted fan OS.65 and OS.91.
How comes ? - surely OS saved from development cost, but those engines, especially .65 is nearly 1/3 of the displacements of BGX-1.
Is it only the position of the carb behind the engine in those ducted fun engines requiring such wide size of the barel ? I.e. seems
the Pressure of the incoming air here plays some critical role, or there is another reason(s) ?