After studying the layshaft, I realized that my design won't work.
Although the lazer is a 4wd, it's not a 4w brake. While pressing on the brake, only the rear wheels brake. When you are braking, your spur gear and slipper slows down, then your slipper plate. When your slipper plate slows down the pulley which is attached to the slipper plate slows down. If you have a normal lazer, your rear one way bearing will help. But if you are using a LAW-4, your braking relies on the slipper pad and plate. I hope I am being clear about this.
That being said, if you detach your slipper plate with your rear pulley, you will have no brakes at all.
I know welshy doesn't want to use brakes
but I want the ability to do so.
I will think of another way, meanwhile let's wait for alcyon