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Old 06-26-2014, 05:21 PM
  #214  
MTK
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Join Date: May 2004
Location: Whippany, NJ
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Originally Posted by MTK
Well, with 3/4 of a pound removed from the nose and changing nothing else, the plane flies tail heavy...DUH!! In retrospect, there is very little weight to move that will shift CG enough to matter. Here's where the Electric folk have a huge advantage where they can shift the battery BRICK just a couple inches and make a difference

Hate the thought of putting dead weight back into the nose of the thing. BUT, I just might do that temporarily to keep the crate flying and breaking the OS in. I also hate to hack into the fuse and move the wing tube. I decided not to do that.

In order to remove the weight from the nose I have a newly designed wing in mind that will buy me 1 1/2 inches in CG location (aft location from its current location that is). This direction makes lots more sense than slicing and dicing the fuselage.

Of course when another fuse is molded at some point all this becomes moot
Decided to move the wing tube instead. It turned out to be straight forward But that is not without its drawbacks. Reducing the tail moment by even a small amount (1" in this case) could compromise yaw damp.

Plane flies well enough but it's a bit on the average side now. It also displays a rather strange behavior of pulling to canopy immediately following a half roll in an up vertical line. That's indicative of not enough downthrust or enough +wing incidence and +stab incidence. Trimming continues now that I have finally gotten full use of my hands again.