On Saturday, December 26, 2015 at 10:41:37 PM UTC-8, krasw wrote:
The published masses of E-model are just not realistic. GP website says 135 kg empty weight for pure glider and 170 kg for electric one. Even production glider mass is bound to be higher than specified (it invariably is). Current FES installations with 4 kWh batteries weigh 70-75 kg extra with over 30 kg for batteries alone. How an earth GP is going to pull of this feat, doing the whole installation with 35kg weight penalty? FES installations have very little structure for motor/propeller, whereas GP uses complex mast (which looks nice BTW) and doors. It seems quite clear that to participate 13.5m comp you would have to strip pretty much everything from GP-E.


Where do you get 75 kg for FES weight? I see 45 kg on the FES website.