All the parts are now sorted for the pendulum drive Rock and Roll model. The pendulum fits in the lower loudspeaker box with space above for the pendulum to move. The drive push rod threads up through a hole in the top of the amp box.
The axe man then kneels on the top with the drive shaft threaded up through a hole in his left knee and out through his shoulders. You can just make out the top of the drive shaft between the chin and the shoulders in the picture below.
Here he is practicing his air guitar. Tap the speaker stack and his head nods back and forth. Head banger!
Colour next. Then release.