ORIGINAL: Paternguy
This thread inspired me to finish up the drawing. I got the main drawing done, now I am going to break out all the individual parts that need to be cut. My intent is to have as much as I can laser cut for me.
Let me know what you think, or if you see anything I missed.
I am tempted to build two of these one stock as per this drawing and one with the anhedral and tail mods described in the thread.
PG,
nicely done! I just sent you a PM.
The one thing I noticed in the nose of the Deception is the lack of space on either side of the engine mount to allow things to be mounted easily. I see that your CAD plan follows Jim's closely and the mount is shown as interfering with the side blocks. When I scratched a 40" version of the Deception, I decided to build the cowl from sheet balsa instead of carved out blocks. I think it worked out just as well and probably came in lighter. However, even so, I am very limited in how much
thickness I can add to the cowl interior with the finish before the mount will no longer slide in. In fact, I'd say that in the absence of film covering on the inside (not something I like doing), any paint type finish is going to cause the mount to interfere. The result is that I'll have to
thin out the inside of the cowl sides in order to allow for finishing and facilitate the engine mount.
I suspect, based on dimensions, that any 61 size power plant that one might want to install in the full size model, would cause a similar problem. A very small increase to the former widths would take care of this nicely. One option would be to cut fuse sides that include the cowl region and use thick triangle stock to produce the necessary material for shaping.
This post on the 40" span build thread outlines how I went about the cowl:
http://www.rcuniverse.com/forum/fb.asp?m=8403054
The somewhat poor picture attached shows roughly the end result of the shaping (the engine is just dropped in the cowl not actually mounted so it's too low).
David.