I used a Piston moulded from Hot Glue gun sticks in my last piston which worked well,but it was heavy,to large and it looked like sin!So I replaced it with a Epoxy piston.The new piston is 20mm shorter and weighs 35grams less so I should get an increase in performance.
I also plan to make the pilot volume as small as possible by using foam swimming poles,you no those long floaty things.Anyway as they have a hollow center the air can pilot easily through it and also it is going to be a bumper for the piston,does anyone see any problems with this set up?
And a Picture of the Australian Spudding Cockatiel










