K&A V-1 Buzzbomb Build Instructions

The K&A V-1 BuzzBomb EDF Jet as it comes from Warbirds-RC The model arrived well packed Clearing the buble wrap reveals some of the components The parts list for the V-1 is shown High quality balsa in the parts bag is used throughout the kit Construction begins with the wings. The kit did not come with ABS wing tips, so I traced the pattern six times on some 1/4" balsa Rough cut out each spar. Three 1/4" thick spars are stacked at each wing end to make the tips Sand the spars to shape, leaving them a bit oversized Prepare several piece of masking for the leading edge pieces and tip spars Edtend the center line that was pre-drawn to the leading edge of the wing PAce masking evenly spaced across each leading edge piece and a single spar for each tip Apply a good 15 minute epoxy to the leading edge balsa piece and spar Apply epoxy to the wing tip Apply epoxy to the leading edge of the wing Place the wing down over the leading edge piece, making sure it is positioned evenly on both the top and bottom edge of the wing, then tape it on place Position the spar at the wing tip and tape it in place, making sure it overlaps all the way around Clean up any excess epoxy with denatured alcohol and paper towels, then allow the epoxy to set Apply thick CA to a stacking spar Place it over the second spar Clamp it in place until the CA sets Repeat the procedure for the second two spars Apply CA to the cap spar as shown Install one set of the double spars over the cap spar and repeat for the second wing Sand the top and bottom of the end spars to the airfoil shape of the wing Sand the leading and trailing edges to match the wing Use a large sanding surface to expedite shaping the leading edge airfoil. Taping a couple of pieces of 100grit sandpaper together with thin clear packing tape on the back, then taping the set to a table with duct tape makes a nice sanding surface Be sure to sand the top, then the bottom, keeping the shape even across the span of the wing Draw a end cap shape on a piece of paper and cut it out so there is 1/2" extending to overlap the wing place the drawn line of the tip at the seam of the cap spar and wing, then tape it into place as shown Transfer the shape to the spar with a pencil You can whittle away some of the large excess balsa before sanding, but be careful not to remove too much Use a sanding block to shape the end of the tip, keeping the end square Darw a line at the point of the airfoil as shown USe a piece of masking tape as a ruler and extend the line to the center of the trailing edge Sand the top of each wing to a taper, down to the line Sand the bottom of each wing in the samme manner, tapering it to the outside line Finish up each wing tip with some fine sandpaper for final shaping Fine sand the entire wing, removing any sheeting overlap Measure 1 1/4" out from the root of each wing and mark the inside location of each aileron. Measure 1/2" from each wing tip rear for the outside location Measure 1" for the thickness of the Aileron A piece of brass square was butted up against the trailing edge, then a 1" wide ruler was used to spce the width of the aileron and a long ruler is used for cutting You can draw a line for the Aileron location if you wish to make sure your ruler dues not slip Cut each end first, then cut the long run, making several passes and keeping your blade perpendicular to the table Use one of the four 1/6" x 1/2" wide balsa cap strips to cap the inside of the wing's aileron area. Measure, then cut and fine sand to a good fit Apply 5 minute epoxy to the Aileron area Place the aileron cap on the inside of the wing This Website and all documents herin are Copyright © 2012 www.scalerocketry.com - All rights reserved.