The following parts are required:
- One Semroc V-2 xKit, using the scale fin option
- 3/32” balsa stock
- Thin Kevlar twine
- Motor hook
- Mylar sheath to hold the motor hook (optional)
- Lead shot
I started the build with the motor mount. This is your typical mount that incorporates a motor block and spring motor hook. I used a mylar sheath to hold the hook in place. I have no idea where it came from and a couple of wraps of tape would work just at well. I also tied and epoxied a short piece of Kevlar twine to the tube. Because of the hook and twine, I had to sand the pre-drilled tail cone a bit. After the motor mount was installed in the tail cone, I had to notch it so the hook would flex. This is not optimal for a scale build, but I wanted the hook.
This is a very sport scale model as I worked with a photo of the Hermes on my computer screen. I entered the measurements into, and manipulated them with, a spread sheet. I found the fin tabs would be 0.5” square and the The dimensions of the upper fins, once rounded to even ruler dimensions, are: root - 2.125"; tip - 1.25"; sweep - 0.75"; and, span - 0.5".
When I ran the RockSim, I found the CP was about the same as the stock xKit with the scale fin option. I bored the nose out and added enough lead shot to set the CG. The hook-eye provided with the kit was embedded in the lead/epoxy slurry. It weighs 3 oz without motor and RockSim says a C6-5 will work, a B6-4 would be OK with a long rod.
I used the stock rubber cord, tied to the Kevlar leader. I didn't use the stock 'chute, opting to use a nylon one instead.
- I primed it then painted the white base coat.
- I masked the fins and over painted the edges to seal the tape.
- When dry, I painted the fins.
- I marked the nose cone tip by positioning a clear plastic tube and slightly scoring the white base coat.
- I sprayed Rustoleum red primer into a plastic container and, using a micro brush, followed the score mark.
- The bulk of the tip was painted with a regular brush.
- The lower stripe is 2 pieces of vinyl pin striping.
- The stripe on the cone is also vinyl tape. I carefully scored one edge (every 1/16"-1/8") to allow it to conform to cone. This is the first time I've done this and it seemed to work well. There were 2 - 3 places where I touched it up with a Sharpie.