RE: Delta launcher
The main piece that the launcher slides on is 1" X 1" X 6' aluminum. I just made a U shape out of 1/2" conduit which is bolted on the bottom, the legs are 3/4" conduit that just slip over the 1/2" I'm guessing about 30". I'm out on the road so cant give any measurements until I get home next week. The bungees are the heavy black rubber type I believe 31 inches. The only warning is when you cock it dont let the handle slip out of your hand as it will spring back. The handle just basically goes over center when it is cocked so it stays in place fine after it is fully cocked.