In my droid I modified the Senna Gas Pipe Method to better fit my droid. I wanted the center of the droid to be open so I could use a Harbor Freight Ammo Box as a real battery box. I also already had a hole for the pipe in the frame and also still wanted the ease of leg removal if ever needed for transportation.
my method uses 2 #pipe's and flanges attached to the body uprights this pipe functions as the outer pipe. on each leg there is a 3/4" pipe. The 3/4" pipe is welded to the flange this is a new addition because after drilling too many holes in the pipe for the angle, I replaced the pipe using normal epoxy instead of JB weld (aka Cold welding) this was a mistake because the normal epoxy cracked when the droid went out in the cold. See picture below to see a R2 fallen which was the reason for getting it welded.
Upgrades I have done since coming up with this design
Lessons Learned