I thought you said it was a Hyper???...The Hyper branded beach cruisers do not come with a factory welded adapter or "weldment" for holding on a disk brake caliper.The front caliper has a weldment on the fork from the factory, its centered and adjusted correctly, but I'm going to rough up the pads and scour the rotor, but one disc brake isn't enough past 15mph.
The rear is an old-school single wheel brake caliper with soft grey rubber pads.
Connected to a double pull lever with bias to the front because the vulcrum means the outside (front) cable moves further.
Now it's all the more would I love to see a close up pic of that front fork setup.