Wouldn't you know it. I installed the OS 50 this week and forgot to read the build addendum provided by Great Planes for this aircraft. The change was significant. Moved the engine back from the 4 15/16 inch as indicated in the plans to 4 1/2 inch as indicated in the addendum. Jeech. What was good was that the change put the mounting holes right smack inbetween each other so there was no real need to do anything but drill new holes and remount the engine.

I originally put a large Z bend in the throttle linkage so that it mated properly with the throttle, but fotunately, it was in a position that the reduced almost 1/2 inch of length did not turn out to be a problem. The throttle works just fine. By the way, I opted to use an inner hole in the servo so that I had more throttle resolution. Inner hole in the servo linkage and outer hole on the throttle. Does that sound right?

I mounted the vert/horizontal stabs last night. Nice and solid this AM. Tonite, it will be installing the rudder, elevator, and the pushrods. If time permits, installing the RX and Battery, using a 5 cell 6 volt 1100 mah by the way. Servo's are all high-torque Airtronics 92738's except the throttle which is a micro hi-torque, Airtronics 94141. I don't think I need a lot of torque to operate an engine throttle using steel rods, Dubro plastic clevis, through teflon tubes. Slips pretty good.

Does anyone have any suggestions regarding installation of the engine cowel? I have never installed one before and want to make sure this one looks good.

Hey, with any luck, maybe I can maiden it this weekend! We'll see, and I will report how things turn out next week.

Thanks, all, for your input.

DS.