Monopoly Rotating Flipper

[Paul R Owen]

Not sure if I am missing something on this. The rotating flipper is secured under the playfield by a circular weight thingy. There is a tiny screw that pushes against the metal shaft of the Flipper. However, this over time keeps working loose and the weight thingy drops off. Am I missing something?

 

[Moonraker]

Threadlock to stop the screw from working loose over time. Also check that there is not a second hole missing another tiny screw as there's normally more than one when it comes to flippers.
http://uk.rs-online.com/web/p/pipe-thread-sealants/0693848/

 

[Paul R Owen]

Thanks Pete - what confuses me is that it is only the end of the screw pushing against the flipper shaft that keeps it secured. You would expect to see some sort of hole or indentation for the screw to lock into?

 

[Carl Spiby]

Could file a flat bit into the shaft?

 

[Paul R Owen]

There is a flat bit on the shaft, but it still comes loose!

 

[ronsplooter]

Standard grub screws by the sounds of it but there are normally 1 of them pushing on the shaft in different places. They do wear with age so maybe replacement grub screws are needed?

 

[Paul R Owen]

The screw looks and works OK, but there doesn't appear to be enough to attach to on the flipper shaft. Maybe a design fault?

 

[Wayne J]

Would filing the end of the grub screw give a larger contact surface, and thus better grip?

 

[stoptap]

You might want to try get hold of some knurled cup set screws Paul. Decent Allen key, Loctite 243 threadlock and it shouldn't come loose again.