On Friday, March 22, 2019 at 8:17:47 AM UTC-7, AS wrote:

Guys - let's stop making the winch launch sound like it is a glider shredding method!...

ASK-21 - MTOW of 600kg, black weak-link of 1,000kg, ratio 1:1.66...

Let's remember that the critical factor here is wing root bending moment, which relates much more closely to the non-lifting mass than it does to the total mass.

Taking the ASK21 maximum non-lifting mass of 410 kg as our metric, the ratio in question is 1000/410 = 2.43.

True, not the 3.5 I cited, but still a substantial value.

--Bob K.