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Posted by TomFlyer | Dec 31, 2009 @ 10:35 AM | 3,575 Views
This is the thread that I did on my next method of making an accurate and durable leadign edge for a slope plane (Barrcuda). http://www.rcgroups.com/forums/showthread.php?t=1154522
Posted by TomFlyer | Nov 28, 2009 @ 11:16 AM | 3,730 Views
I have been building slope wings with different leading edges in an attempt to figure out the most durable, most accurate, and easiest to repair. I started with the standard bass wood LE carved and sanded to shape using templates for accuracy.

Next I did a "cast" LE by making a mold using a the foam core cut by CNC guided hot wire. Very accurate, but very time consuming. A little trickey to match up the cast LE with the wing as it has to be cut back at the proper angle so the two parts mate properly. This is a related thread that has some pictures: http://www.rcgroups.com/forums/showthread.php?t=650026

Next I did the wrap the extra CF around the LE as seen in this thread:http://www.rcgroups.com/forums/showthread.php?t=1074863

It was pretty labor intensive to sand the epoxy off down to the proper cross section. More difficult than sanding a bass wood LE, but more durable on the slope.

Next was a method that is in this thread: http://www.favonius.com/soaring/bagging/bagging.htm
This required double bagging, and a lot of final sanding for the LE. It came out almost as accurate as the molded LE method.

Next method is going to be the best yet (I hope). I plan of bagging a foam core that has an accurate LE, cut off the LE with a 1/8 inch wide table saw blade, replace the foam in the LE with epoxy and microballoones, put on an 1/8 inch thick piece of bass wood, sand that to shape and then glue the hardened LE back onto the wing. Then bag on the final layer of glass for a nice finish. I will probably do a mini-build thread on this.
Posted by TomFlyer | Jan 28, 2008 @ 07:03 PM | 4,278 Views
How do I put one on my old threads into my "Blog"?