This is my flight on the brand new 777 Rook on the last morning of the Slovenia trip. I purchased this lovely glider after demoing it a few days before. The Rook is design by the Valic brothers to be top of its class as an XC glider in the competitive EN-B glider market. The top end EN-B is wonderful to fly and very smooth as you can see in this video. Even in turbulent conditions that I flew the previous day it was still smooth and progressive. It's easy to ground handle and in flight doesn't disappoint. It has a very good glide ratio and seems to float. It performs well on speed bar with no noticeable deterioration in sink on half bar with and incredible speed that EN-C pilots would be pleased with. It turns as expected for an XC glider very flat which helps keep the glider firmly in the thermals. The break travel is longer than my Team Five Blue wing but as this is a sports wing that's to be expected.
I have since flown this wing in the UK on Combe Gibbet and it handles lovely and ground handles and reverse launches easily. It's very smooth and progressive and keeps on wanting to flying and eek out all the lift available.
EN D class performance in a comfortable and easy to fly EN C class wing. The new Delta was developed with R10 and BBHPP Technology and is the highest performance sport class wing in existence. The Ozone Test and Design Team maximised performance on the Delta by focusing on efficiency gains that do not sacrifice safety.