It's about 20 pic's
Since the only off shelf AUG auto wind drum mag cost about 175$ (not including shipping and customs), pre ordered and only 1000 bb's capacity, I've decided to build my own.
parts used:
ABS plastic storage compartments that were removed from small Mitsubishi pickup while installing CD players in them - free.
Chinese AUG Hi cap mag - got it for free from a friend of mine.
6v motor with 3 gears torque up system - carefully removed from a dead CD player, again free.
6v rechargeable battery pack unknown miA or type - free from another friend very old type Chinese AEG.
Electric supplies and other materials such as wires, switch, connectors, isolating tape and heat shrink, glue... - courtesy of my old working place.
Men hours - somewhere between 5 to 10 depending on your skills
Costs - almost free
Capacity - 2500+ bb's
On to the build up
I took 2 plastic dashboard parts and removed one of their side wall's (which will be used later to create the cover).
I cut those 2 pieces to the exact width so I can fit in the mag, I also made a hole in the bottom that wraps around the mag and allows me to work manually if needed and catches the mag in place. I attached those 2 pieces together using aluminum plats and the original screws.
I've opened to holes in the mag body, one in front of the main manual gear (the bottom one) in order to connect it to the motor, the 2nd is on top of the inside mag gears and it's for feeding the bb's from the box to the mag.
Inside the box I built a buffer that will channel the bb's to their place.
I closed the remaining unwanted holes with plastic and epoxy glue and built the top cover from the 2 side walls removed in the first section. I've placed inside governors that allow me to open the lid a bit to check on the bb's or open it wide for very quick loading.
Beneath the buffer I placed the motor and gear set and the battery, the switch is facing the front, that way I can push it with my elbow while shooting.
