Thanks, Aeroresurrect.
The funny thing is that calculations using the speed, wing chord, aspect ratio, Reynolds Number and the polar for the AG03 airfoil show a theoretical L/D of only about 12.5.
Or say ~10 in practice, more like one would expect from a model of this size.
So one would only expect say 50-60 ft.
Responses on RC Groups suggested something I had not thought of. That the glide was improved significantly
by being in ground effect.Best would be to repeat the experiment in still air.
That I fear has to wait, as:
1. The wind speed here in Indore is 20km or more till it gets dark
2. A year or two ago, the model hit power lines. The metal towhook snagged on one line, and the fuselage boom touched another line. The boom was of carbon fibre, so there was a big spark, and the balsa stabilizer caught fire. Fortunately the towhook melted and vanished instantaneously. And that released the model! Repairs are still pending...