>-----Original Message----- >From: Daryl Perkins [mailto:[EMAIL PROTECTED]
>I was rather surprised to hear that he >actually bagged his wings, with the outer cores inside >the bags. So, from the inside out.... core, >skins/mylar, outer cores, whatever bleeder required, >bag. I agree that there are many ways to achieve good results. Vac bagging techniques vary greatly especially if you start talking to people overseas. In the SALglider YAHOO group we talk a lot about vac bagging and we have a good international group of members. For example, Martin Kopplow has a method that involves attaching the top beds to a flat bench, attaching the mylars to the beds with 3M77, doing the layups on the mylars........OK , just go to this link if you're still interested in the details; http://groups.yahoo.com/group/SALglider/message/3532 The method that Daryl talks about and Martin's method both would have the advantage of more accurately replicating the airfoil's camber and twist (washout vs. washin). Both methods would also not lend themselves well to production work. My method is just one of many. I originally learned from three sources; The instructions that came with my Featercut system, the instructions that came with my original acu-vac system and most importantly the Frank Weston newsletter series about scratch building. My methods have evolved since then into a system that favors simplicity and low man-hours per wing and sometimes compromises quality slightly. I have always said that there are plenty of guys out there that can do better quality wings than me. You just won't find very many guys who can match my speed. My specialty and motto has always been "90% of the quality at twice the building speed". >I will say one thing - if you are having problems with >large area delams or air bubbles - too much resin. This topic was discussed in SALgliders as well. I believe that some guys including Mark Drela were of the opinion that too much resin could lead to air bubbles in the finished wing. If you are using a lot of resin then you should consider this as a possible cause for your problems. The solution would be to use a foam roller for the layup and use the paper towel and hard roller method to soak up the excess resin as you see in the video. Phil 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.
