Info for Phill Mainwaring re- his unfinished model of Christen Eagle. I have a model of the same thing and the building plans and instructions. The kit I have is an old Pilot Models by OK Model Co Ltd Japan. It is 1/3.7 scale, length 55-1/8 inches, wing span 63-3/8 inches, weight 7000 - 7500g, engine 20 - 30cc. Apart from a very slight variation in size and you have a one piece cowl mine is two piece, it looks the same. Pilot models are no longer made. The balance point (CG) should be inline with the rear cabane and the top wing incidence is set at 0 degrees. Hope this is of some use. Tony.