I've just finished documenting the complete strip down of a Bell & Howell 35mm Eyemo:
Very similar mechanically to a 16mm 70 series Filmo.
These cameras have an uncased spring, so they can be very dangerous to dismantle. Personally I wouldn't recommend inexperienced people doing anything more than removing the front. But I figure if people are going to try it they're better off having some idea of what's inside.