Power (ft lb)
For those without a chrony this just might be of interest:
It's a reference created by Gary Barnes to to estimate air gun velocities but it's very applicable to slingshots. A lead ball of any calibre will give the same mushrooming when fired at a hard...
I originally posted about this in October 2011 in THIS thread.
I had to build a few more today for friends so I thought I'd take a few pics along the way.
What you need:
3.5mm stereo line plug
Length of 2 core cable
Pliers or cutters
Tape or heat shrink...
Being completely paranoid of accidentally shooting the LCD on my chrony one day, I decided to make a shield up for it.
Made from the same 20mm Acrylic I make my slingshots from, nothing's getting through this baby. Not shown in the pics, but I also have 4 silicone feet to offset it from the...