Yes, that's your 3-shoe ;)
@Elliot: I see your concern. at this point, the only way the segments can fully disengage the plate is when the padding is used up, otherwise the segments wouldn't be able to travel out enough because of the ) shaped end of the segments. These ) shaped ends are placed so that the baseplate will spin "into" them. I do share your concern about stresspoints tho. I will make reinforcements to the baseplate, so the pins won't bend out.
@ar: I don't know how long the clutchbell is going to last. There's 2 options: Total failure and complete success. If the bell can hold the force of the segments completely hanging on it, it will be fine. As the brake liner won't do more damage to the bell than normal clutch liner.
However, if the bell doesn't like the force the segments put on it, it will break and it will be disaster all around. I don't think that will happen tho. The surface area is a lot bigger than with the normal clutch, the segments are lighter and so I think the pressure wouldn't be too high for the clutch to handle.
Whatever the outcome, it won't make me cry. I have some spare clutch bells and 2-shoe baseplates can be bought for a couple of bucks each. The worst thing that could happen is that I have to clean the inside of the engine to get metal out :P
@Graham: I don't think I'll be heavily modding the ZA. Those are quite rare overhere, so I will pamper it like it were my lovechild :P