OK. I'm hearing impaired, so treat my hearing something with caution. What I'm hearing is the starter, probably the Bendix, ripping into the star
wheel. It could be as simple as the starter not being torqued down.
So, my first suggestion is that you check the bolts holding the starter to the engine. If they are OK, then my next suggestion is that you pull the starter off and inspect the Bendix
gear teeth and the star
wheel teeth. The starwheel is the
gear teeth that surround the flywheel, and which the starter gear engages. Is anything chewed up?
Next I'd put the starter in a vise (DON'T do this with a loose starter - the torque will throw it at you) and bump it from a
battery and jumper
cables. Does the Bendix fly out, and the starter spin smoothly, or have you got a messed up starter motor/bendix combination?
I found a new star wheel for a similar Ford engine from the 1950s in 2010. That's not to say that it will be easy to replace, if that is the problem.