Valach 250 radial , 1/3 Stearman maiden flight

[@rogerseymour3977]

Sadly the engine has a vibration that I can not sort out from the first start up .Been trying to contact Tony Clark for help, with no luck .

[@wilfredoalvarado7553]

Hi, I am working in Balsa Usa Stearman, I want to decide if using a Moki or Valach, I am in USA, can you give me your oppinion? And I am going to use 1 positive degree in upper wing, and 0.5 negative in lower wing,

[@thomasschmidt9281]

never ever