back to index 13. Assembling Fin 50. Locate a Depron foam fin and two 244mm long carbon fin stiffeners. Place them on a piece of newspaper and spray both stiffeners on one side only with spray adhesive. Allow the adhesive to get dry for a minute, or until tacky. Place a carbon stiffener, adhesive side down, onto each side of the fin, with the ends overhanging the front of the fin (shown on plans). Press stiffeners firmly in place. The carbon extensions at the front of the fin will slide into the coroplast fin mount. The fin is held in the coroplast mount with friction, and thus it can be removed at any time for transport, etc.   51. Cut a strip of lightweight strapping tape, slightly longer than the fin, down the middle. You should now have two narrower strips of strapping tape. These two strips of tape will be applied over the carbon stiffeners, as shown on the plans. Use a squeegee to force the tape around the stiffener, and onto the foam fin. Wrap the excess strapping tape overhanging the leading and trailing edges around the fin.     52. Using 150-grit sandpaper, lightly round the leading edges of the fin. The trailing edge of the fin should be left square. Wrap a short piece of strapping tape around the bottom edge of the fin to protect the foam during landings.   14, 15, 16. Setting Control Throws, Balancing, and Flying All text, images and other content © 2003 Richter R/C. All rights reserved.