I just want to apologize to anyone that wanted copies of my On Beam clutch parts. I'm unable to deal with any pinball related stuff right now. I'm not sending out any more 3D-printed parts, and I really don't want to share the files for them (there are still a few problems, and they are really not ready for distribution yet).
If I can get the clutch springs made correctly, I will post that info here.
To my close friends, all is basically OK, but I'm completely overwhelmed with all of the problems and projects that I have going on right now.
DCP

Hi, Mark - my apologies for being unresponsive about this. I found that the key component of the clutch is the spring. If the spring is not the exact size, and in perfect condition, the clutch will never work properly. The springs are not available anywhere as far as I can tell. If someone could wind them properly, many of us could use them. The steel clutch parts will probably never wear out - the spring is the show-stopper.
I really don't know if I will ever be able to dedicate any time and energy to working on this again. My time is filled up with dealing with my decrepit buildings and my girlfriend's and my poor health. Pinball falls to the wayside when you are dealing with depression and physical problems.
My 3D-printed clutch parts will work if you have broken plastic clutch parts, but you need to have good springs (unlikely if the clutch has ever failed and overwound the spring). I also discovered that my new plastic parts don't allow enough endplay for the clutch to work without a bunch of hand fitting.
I could probably send you the CAD files I made for this assembly if you think you might want to try to move this project forward yourself.
I'm sorry I can't be more helpful right now.

Here's a Google Drive link to a zip of all my On Beam files (about 7MB). The STL files are in the folder called "Output Files".
https://drive.google.com/file/d/1vB66mTIWJw_9ZqCLcFgcdhLGN_oQ7Gvx/view?usp=drive_link
If you download and install FreeCAD from https://www.freecad.org/, you can open and modify any of the .FCStd files, and view the exploded assemblies that I created. You can also create new STL files with your modifications, so you can 3D print your new versions. I highly recommend FreeCAD. It is very similar to Solid Works and other commercial CAD programs.

"I hereby donate my On Beam FreeCAD and STL files to any Pinsider who wants to help with the Bally Clutch Project!"

NOTE: Unless your plastic cams are broken and your clutch spring is in near-perfect condition, these parts will NOT fix your game! You also will need to adjust the endplay of the whole assembly. Mine fit too tightly and I ground down some of the other cams to create some endplay. The long-bodied cams are a common part found in all Bally bingos, so don't worry about grinding those down to fit. There are lots of them around.
It's more than likely you will still need to figure out how to wind new springs. The steel clutch inner and outer parts would be fairly easy for someone to make on a lathe. I don't really think you could make a clutch with a plastic body and a steel spring that would last very long.

I just want to make sure that MarkAnderson , edednedy , and Thrillhouse saw that I posted the CAD files for the On Beam clutch assembly (in the post right before this one).
It would be great if someone would take up this project where I left off. I may be able to answer some questions about it, but I'm not able to continue working on it right now.
We need someone who can make the springs! A functioning repro clutch mechanism will depend on a custom-made spring that has to match the original exactly. The clutch has to turn freely in one direction, and lock up solidly in the other. If the shaft turns the other direction, even a little bit, the timing is off and it won't work.
It's a finicky and difficult Bally mechanism that unfortunately has "bricked" a number of interesting old games.

Send them to someone else on here that needs them!

I'm pretty sure those parts can be salvaged out of Bally bingos. The motors and other parts are similar, too. The only thing the bingos lack is a clutch like On Beam and the others of that era.
I could sell you a whole bingo for parts for $75, but you have to come pick it up 8).