I like bottom driven flaps and ailerons for various reasons. According to Dr. Hepperle a properly faired set of 4 linkages on the bottom of a wing add around 3% total drag to a typical F3B airframe. You can go dig around his website and find a number of interesting tidbits. _http://www.mh-aerotools.de/airfoils/index.htm_ (http://www.mh-aerotools.de/airfoils/index.htm) happy trails - Rob Glover
hi all, I've been asked this a few times, and I give my opinion, but i want to see what you guys have to say. What gets better mechanical advantage, top or bottom driven linkage, and how much does the drag of bottom driven really effect things, if any ? My vote goes towards bottom driven. I can always get the throws I want, easy to set up and adjust, and gives a solid control surface. Dave Hauch www.git-r-built.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
