2G wrote on 9/22/2019 1:43 PM:

The bottom line is that the total drag of the 26e prop+mast+radiator+engine bay doors drops the glide from 50:1 to 17:1. At best, what you are arguing about is the relative contribution of these elements - my bet is on the prop being the largest. But the only thing that matters is the total drag.

Don't forget the massive landing gear that puts the wheel and tire almost entirely
outside the fuselage (and it has doors with a frontal section nearly as big as the
engine doors)!

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to email me)
- "A Guide to Self-Launching Sailplane Operation"
https://sites.google.com/site/motorg...ad-the-guide-1