I have flown some quads and have been a tinkerer builder for awhile now. I have been slowly 3dprinting parts for a decent sized quad. However, before I go that far and have a big build with expensive parts and what not on a home build quad, I would like to start getting my feet wet with arducopter. So I am curious if anyone has taken some cheap off the shelf quads and basically ripped the guts out and use ardupilot with them. I have 2 quads at home that I would be willing to sacrifice to learning. I have a couple of radio receivers and a FlySky FS-TH9X-B to use.
Thanks for any help getting started!