Gear Leg Stiffners
On a RV4 or 6 gear leg stiffner, this is the method we use:
On the gear leg stiffners, we use cattle prods, that can bought at Atwoods or veterinarian store that sells supplies for cattle. They are a little over 4' with a rubber handle and a cap on the other end. One prod will do both gears at 2' lengths, it's about 3/4" round rod. After you cut to length then sand or cut the ends to make a taper to the gear leg. This makes the glass tape form easier at the ends. Just center the rod equally on the back side of the gear, attach it with tie wraps or string to hold it in position. Put the tie ends on the front or back, not the sides. The gear should be free of rust, but no primer. (When you're finished with attaching the fiberglass and the resin has dried, you can paint the gear that's exposed.) Fill the gap between gear and the rod with a mixture of Microballoons and epoxy resin to make a smooth transition for your fiberglass tape to lay down smoothly. (Looking at the picture, you will see a white color running between the gear leg and the rod, that's the microballoon mixture, also at the top and bottom tips of the rod is filled in.) Fill the void completely. Make it pretty thick so it doesn't run and that way you can proceed with the fiberglass tape. We use epoxy because the pot life is longer than polyester is.