I have been holding on to this one for a while and still testing these out.
What are they?
general concept is quick removable & swappable flipper bats. Basically once assembled they look like a regular bats and have been told have been done before on a old Gottlieb series of games. But with these there will be different sized bats and you don't have to lift the playfield to swap out bats - less than 5 minutes to swap to something different.
How do they work?
basically assemble the bat to it's finished state and install like you normally would and align and tight up. Then you can simply unscrew the bat from top side, lift off the bat and install a new bat onto the square drive end and the alignment is already done as I kept the square drive and front face exactly the same on the bat variations.
Why use these?
for something different you can swap out a colour and a different look or size in a few minutes.
What is different?
mainly the optional sizes - 3" regular bat, 2 7/8" bats for a bit of comp fun or add that Trudeau game to a regular machine to perfect you game play skills or 3 1/8" bats to tight up a Trudeau gap as some people might feel intermediated by the wider gap. Also is a set of feature bats - Ghosutbuster PKE bats that have holes in the top for leds as well as a fake bulb set. I am still play testing the bats and about 200 games in with hollow posts (to allow for wiring for future leds lighting inside the bat).
For Comp fun?
for fun in those fun compa events you could drop the flipper size or increase the flipper size or go for the bizarre and go 1 x 2 7/8" and 1 x 3 1/8" to add that unbalanced feel.
What is the delay?
basically I have hollow posts and GB hollow flipper bats in testing when I have time to give them a bash and all going well will be available.
What is left?
The smaller bat and larger bats are theory bats and still need to test fit rubbers so ensure they are feasible - samples being made soon for testing.
If these work and I am happy and they is interest I will investigate options to make them available, currently the GB ones are totally 3D printed via Shapeways even the hollow SS posts. If enough interest I would look into machined and chromed posts.
above view post comparison
underside design view - notice 1, 2 and 3 dots around the square drive shaft hole - they signify a 2 7/8" , 3" and 3 1/8" bat so you doted have to check and measure.
tester GB flipper set - with the version one fastening screw hidden under the rubber, version 2 will be top side which will be easier to change. Posts will be available hopefully in hollow and solid and have the allowance for v1 & v2 style fastening.