This is what cracked or broken worm gears and worn belts sound and look like inside a vintage Bell and Howell 16mm Projector.
Resources:
Larry Urbanski is the main resource for Bell & Howell projector parts and tools: [ Ссылка ]
The best 16mm film enthusiasts forum:
[ Ссылка ]
Xcelite bristol screwdrivers set on Amazon (urbanskifilm.com sells a 3-piece set, or check used on eBay):
[ Ссылка ]
Paul Ivester's Bell & Howell 16mm projector models list: [ Ссылка ]
Manuals:
[ Ссылка ]
