Originally Posted by Randy Rojas
Someone has siren for pure slope?, It's rapid without engine?, tanks
Also whitout engine is OK, very fast, adding weight or leaving Engine & batteries installed.
I fly, often in slope, and the only problem is the absence of rudder, remanining in thermal, due to speed, is not easy wuthout rudder to keep "flat" the wings, if thermal is narrow you exit....
Flying Weight of my Siren is almost 1500 grams (4x3700 Lipo and 250 gr. Motor).