Great video! I'm getting ready to do this on my trailer this weekend. Luckily my trailer has a tube-style rails that I think I can put the springs inside of the rail.
What we used is square with a round wait on the inside. Get the weight of the tailgate. Split the weight period on both sides. And a round pulley for the top and a quarter inch cable. They have new Springs.
I used this video to do my 10" trialer. The PVC was 2" dia. and I used 8" 11'" of PVC.. Used a 130# spring on a tailgate that weighted 65# when down on the ground on a bathroom scale. It now goes up or down 2 fingers. Works GREAT !
@@kennethgunderman9086 Thank you very much for posting these details! I’m not clear whether you did this on both sides or only one, since the spring has enough strength to lift the entire gate.