Gave myself a few minutes per attempt to record what stacks are and aren't (yet) possible without having to use hax mode or pause break loading* (*although snapper loading does the same job but better for static components due to the fact that you can connect extenders/wheels etc by placing the motor first, snapper loading, and then stacking the black (just send the damn axle to space by any means legitimately))
Starting with the big black juicy boi: The Supervolt
If there is a stack you would like me to try more on, such as ones that I couldn't do in the time limit I had, or with different rotations/height, feel free to suggest away or try them yourself!
RAD Motor:
Bottom attachment point: https://youtu.be/aXQRL1OiDG8
Left attachment point: http://youtu.be/K_fVnms2ISw
Right attachment point: http://youtu.be/F93IOYs4exk
Redbird Motor:
Vertical attachment point: https://youtu.be/Gx8_XiLfcko
Horizontal attachment point: Couldn't do it in the time I had
ZTEK Motor:
Vertical attachment point: https://youtu.be/HCTu1Tv4w0k
Horizontal attachment point: https://youtu.be/eKykRUXGXUQ
HPZTEK Motor:
Vertical attachment point: https://youtu.be/Oc0mvi4HVuc
Horizontal attachment point: https://youtu.be/qtNNo72RwZo
Snapper II Burst Motor:
Vertical attachment point: https://youtu.be/8ot41f-ADmg
Horizontal attachment point: Couldn't do it in the time I had
Snapper 2 Burst Motor:
Bottom attachment point: https://youtu.be/hLsesQiKjkI
Back attachment point: https://youtu.be/CYp07dvzY0c
Left attachment point: https://youtu.be/Yn55LTM0gAM
Right attachment point: https://youtu.be/-o6Wp2zdyBY
DDT Burst Motor:
Right attachment point: https://youtu.be/F4ts2wss-vI
Left Attachment point: https://youtu.be/49_rUGHtMp4