RCU Forums - View Single Post - Build thread for a Carl Goldberg Eagle II Trainer??
Old 10-14-2009 | 09:28 PM
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Default RE: Build thread for a Carl Goldberg Eagle II Trainer??

Crossman.. thanks.... By twisitng I meant a weakness lengthwise as if you grabbed the root and tip and twisted. I was thinking of putting some sheeting up there but I'll pass to move the build along since it's a very well tested design..

I made more progress. The horizontal stab is complete with initial sanding. I need to round over the leading edge and streamline the tips and ends of the elevator. I sanded the V in the leading egde of the rudder and rounded over the top. On the wing, I added all the shear webs doing the backside which go out until the 5th bay. I let those dry and then did the front side which run the entire length of the wing. I stood the wing on it's leading or trailing edge depending on the webs added to be sure the glue would not run and remain in that web / spar joint. I used blue painters tape to hold them tight to the spars as it comes off easily but sticks well. The clamps on the end held one side with tape on the other due to the sheeting being in the way. The wing tip came out real nice. This seems like a very light wing as wings go. Should make for nice performance.

I was studying the manual and I think I'm going with the bolt on option. I've done this enough to know where I need to add strength above and beyond what they show in the addendums. For instance, they have the dowel just butt jointing into the bottom spar. I plan to angle the dowel a bit more and let it be captured / expoxied into a hole in the ply dihedral brace. I also will add another brace farther down the dowel by the leading edge for add'l support. Then pick up with the instructions again and sandwhich the whole shebang between ply ribs. I will add additoinal doublers in the frontal area of the cabin as well. It looks like I can add all this after the basic fuse is built so I will point out what I am doing that is extra.

For those new to kitbuilding , the second wing always goes faster than the first since you don't need to read the instructions [sm=wink_smile.gif] as you already know the order and have figured out how your going to clamp, etc, etc. I will put the servo wells in the wings once they are both built and joined together. In the past I have hidden the servos under a hatch with a opening for the "arm" to stick out perpendicular from the wing bottom . I think this looks nicer than seeing the top of servo and arm fully exposed. It's a bit more work as you need to mount the servo sideways but I think worth it. I use minis (not micros) as they have more than enough torque and are easier to fit in smaller spaces. (so much for not being wordy [sm=72_72.gif] )
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