You cut wight, then you did real good.

Ken

Please do I would like to know how much centrifugal force is applied if the engine quits.

 Whoah, Whoah, Whoah, wait a minute. If we go back toward the beginning of this thread didn't this latest "exchange" start out talking about engine offset? If the engine quits, especially overhead, no amount of engine offset is going to help.

 Also, and I'm no Fississist either, but as long as the plane is moving forward at all there is going to a certain amount of centrifugal force produced. It may not be enough to feel or measure, but it's there. At a normal flying speed of say 50 plus MPH I could easily see that force having a stronger effect on the plane than gravity.
 This theory can be easily tested, and proven, with a rock and a string. There were some really hairy knuckle-dragger dudes thousands of years ago that figured that one out, shortly before the wheel I think.

All I know from experience  is that if my engine quits at the top of the circle, I give the plane down elevator to get line tension back.  It when I give up without thinking that things bad happens.   Sparky, is there a limit on how light a plane can be for it given size?

With the fixed weights now a days and the quality of wood available I think I have reached the limit with this type of construction. So if anyone says they can build it too light they will need to show me. Not tell me SHOW ME.

Good Morning Robert;

  Given the pace at which you build, I assume you use CA as your primary adhesive.  I've heard it said in the past that CA is actually heavier than aliphatic resin (AR) adhesive (due the evaporation of water/moisture from the latter as it cures).

  Since you are such a prolific and skilled builder, you would likely represent a preferred trial scenario.  Have you ever constructed two of the same part/sub-assemblies, one with CA and the other using AR as the adhesive?

  It would be interesting to see whether there is really a significant weight savings versus CA, and if there is it may provide you the pathway to a still lighter model...

All the best,
Dave

Good Morning Robert;

  I've heard it said in the past that CA is actually heavier than aliphatic resin (AR) adhesive (due the evaporation of water/moisture from the latter as it cures).

  Since you are such a prolific and skilled builder, you would likely represent a preferred trial scenario.  Have you ever constructed two of the same part/sub-assemblies, one with CA and the other using AR as the adhesive?

  It would be interesting to see whether there is really a significant weight savings versus CA, and if there is it may provide you the pathway to a still lighter model...

 I've also heard that many times over the years, but I haven't ever tested or compared the difference.