Here is a picture of one of the Pirate Adventure cannons
Going on when I was a theme park AV technician this sounds like pretty normal pneumatic animation. It would be very simple to run new airlines for the additions, Id never expect a new compressor to be added just for a couple extra animations.
With only the 3 animatronics , you could quite easily control them with a newer, smaller compressor. One of the basic portable compressors pictured in packaging here provides enough bars/CFM for multiple pneumatic motions, and is quite easy to set up. My logic is that having the two pneumatic systems separate would have meant less complication during servicing and maintenance, given that they were built during different years, and specced by two different design studios. But Farmer Studios connected it up to the main compressor for the ride regardless. It's just an interesting observation.
Compressor I am using for the sailor's leg motion pictured below:
Not sure what you mean by cylinder recharge time cos to change the speed of a cylinder you just change its regulated pressure. A larger cylinder would just need to move slower to not damage itself over time.
That's not how the animatronic in question worked within Pirate Adventure.
Also important to note that the cannons were not designed in the same way as the other pneumatic animatronics within the ride, and actually had larger piping than the standard 2.5mm diameter pipes used for most double acting motions. The cannons themselves had a sudden "jerking back" movement, which propelled the cannon (which is pretty heavy in and of itself) backwards quickly along a rail underneath, during the firing motion, to mimick the recoil movement of a real cannon.
The cannons inside the fort during the battle scene didn't have the large encasing that the other cannons had. You can see the rails underneath them here, after they had been removed from the fort in 2018.
The cannons also had a
separate pneumatic driven action, with a large burst of air resonating through the metal tube inside the gun barrel, which created the deep "Boom" sound from the cannon, timed to occur as the cannon moved backwards. As I'm sure you will remember, the cannons on Pirate Adventure in the battle scene were incredibly loud. It's one of the reasons I'm scared to restore them .. I don't want anyone thinking I have some kind of firearm !
Regardless, to deliver the sudden burst of pressure, given the size of the piping & size of the cylinders, the cannon uses a small air receiver built next to the actuator fitted to a valve, underneath the cannon. Because of this, It doesn't matter how much excess pressure you provide to the cannon, it always moves at the same speed and makes the same sound when both of the cylinders actuate. But providing more bars of pressure leads to less of a delay between actuations.
In fact, from what my good friend
Dan has told me from his own 8 movement Pirate animtronic restoration, playing around with the air regulation did not change the speed of the cylinder movements for his animatronics , either. But it did create time lags between movements. So I suspect that this is not just limited to cannon movements.
I was lucky to meet with some of the animations designers from Golding Leisure and he remembered the sheer amount of animated figures was huge!
Cool, I hope it was a good experience