The necessity of facing the leading edges of your control surfaces depends completely on the model's required mission. If you require more torsional stiffness out of the control surface than you already have... then face them. For example, my TD bagged wing POS models are not faced - low speed, not going to have flutter problems, and high speed controllability is not really an issue.
Bagged wing F3B or slope racers - I'd face them. This is fairly easy to do. The way I've done it in the past, is to half round out the inside of the control surface with a round tool and some high grit sandpaper, making certain to expose the insides of the skins just barely. I'll use 60-100 for this wrapped around an 1/8" piece of ply, with the end rounded. Goes very quickly. Fabricate some form of holder to set your TE's into, making certain that you put no load on them that may twist the control surface. Cut some 1.4 ounce f/g cloth strips about 3/4" wide on a bias. (+/-45 degrees) Brush a very thin layer of resin in the slot you've created, and lay/brush in the strip of cloth. Once it is cured, you won't believe the increase in torsional integrity. On slope racers and F3B models, I'll do the same thing to the TE of the main panel, to tie the skins together. You can then put some balsa or an epoxy micro mixture to the LE of your TE to create a wiper. Shape accordingly. This part takes some practice, but when you do it right, can be very clean. Good luck with it, D __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.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
