<<This is rather far aft hook position which requires special action during launch. On my Evo program the left slider is an elevator (speed) trim with a small gain. For the launch throw I push the slider all the way forward which feeds in a slight amount of down-elevator. Once the glider rotates and settles down in the climb,
I pull the slider back to its normal center position for maximum load just short of stall. ... leaving the left thumb free to work the slider.>> Or you could greatly simplify things and use your right thumb to push the nose over a bit just prior to stall. It's a very minor bump of the elevator. <<I've done some sims of the initial pitch dynamics immediately after the throw. There is a very significant CL overshoot at the end of the initial nose-up rotation. So if you trim the glider for maximum pull during the climb and zoom, and throw with this trim, then you are guaranteed to stall at the top of the nose-up rotation. So for maximum launch performance, it is necessary to add some initial nose-down trim to safely get past the initial pitch transients after the throw.>> Mark is very much correct. My models have aggressive CG's, very aggressive hook locations, and aggressive camber settings. And my models will all stall and do bad things if I don't bump the elevator prior to stalling on the line. But unlike Mark, I'm not willing to give up any of that initial rotation by backing off on the elevator preset. I just use the right stick and fly the model... My models have been set up like this for years. I know that most of you guys are afraid of that hard nose up out of your hand, and back off your launch set up to minimize this. Yes, it doesn't stall that way... but it's also not pulling as hard as it is capable. In other words, you're giving up launch altitude... He who launches highest... wins... D __________________________________________ Yahoo! DSL Something to write home about. Just $16.99/mo. or less. dsl.yahoo.com RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format