I have a quick question about the 2 bar skeleton popper you made a video for on YouTube. I am trying to make one of my own and I cant figure out how to get more than the 3'' of stroke out of my wiper. You said you were able to gain 15'' I would love to be able to get that much. I am not sure what I am doing wrong, but i have mine set up almost exactly like yours, obviously my dimensions may be a little off because its hard to use a tape measure through the screen of a monitor. Any help would be appreciated, or even the dimensions you used for yours would be awesome. thanks!!!
my vertical tubes are set about 12'' from one another. and my horizontal tubes are set up on around 6'' centers and mounted at heights of 10'' for the bottom tube and 16'' on the top back vertical tube. on the skeleton end of the lifter the horizontal bars are mounted 1'' off of the ground for the bottom tube and 9'' off of the ground for the top tube.