http://www.youtube.com/watch?v=gor7LhsAILs


OK, here's the new video with Stolspeed vortex generators added.

Stall now happens around 30 mph instead of 35 and I can't get it to progress out to the tip of the wing, even trying to hold it (at) high pitch for a while with power on. The last stall does fall off to the right a little and this vid is of the left wing so I wonder if it didn't go ahead and go out to the tip on that side.

Also note; the flexing/flapping/oil canning fabric is no more. I did take a heat gun to the entire upper surface after seeing the first vid but couldn't really tell that that made much difference, at least to the 'feel' of the fabric tension. I suppose the fabric might have loosened over the years a little. One has to wonder though if the vg's are at least partially responsible for smoothing out the boundary layer and therefore the fabric a little too.

Guess I'll leave them on.

Chris