Originally Posted by
hllywdb
The wee stick is a tad under 100 inches. This one is closer to 60. But my 1/2a GLH is right around 150, but also heavier. My wee stick is around 5.5oz so if this comes in under 5 my wing loading is still way down around 12oz per sq ft
That's a pretty small plane then, should be fast...
It sounds like a little odd scaling to me though, it is not the wingloading in oz/sq feet that is important but rather the "cubic wingloading" that should be scaled.
When the engine size is changed by a factor 0.020/0.049 ≈ 0.41, it means that the length scale should only change by a factor (0.41)^1/3 ≈ 0.74.
The wing area is then changed by 0.74^2 ≈ 0.55, i.e. the wing area would go down to about 82-110 inch^2- (from 150-200 for a .049 size).
I don't think that I have flow anything much below 100 inch^2 on a .020, but perhaps 60 inch^2 will be fine, it should certainly be small enough.