Why do motorbike brake shoes have springs that snap them shut?
. When the brake is released? I've taken them off the rear drum brake of my Honda 250 scooter and the brake is much more powerful as I'm not wasting effort overcoming the inertia of the springs. What a silly invention in the first place!
It's so they don't ride on the drum while you're in motion, creating drag and heat. The brakes will wear out faster.
A dragging brake shoe wears out the shoe and decreases mileage. If the shoe's leading, as opposed to trailing, without a return spring it will lock up unpredictably. Also, by not fully releasing dirt will jam the pedal / cable / hydraulics / brake mechanism. Releasing helps to clear the system of dirt and reduce friction.
If you want to make the rear hydrolic be my guest but you still need some spring action.
And when your highly polished brake shoes fail to slow you down you can spend the time before you hit the bus thinking "aaah I wonder if that is the reason?".
To return them and not drag on the drum. On a leading shoe, especially, as they self-energize and more brake = more they tend to lock.
If you question this, ID think you should touch your brakes. Leave them to a shop. They are your lifeline, especially on a 'sickle.
EDIT: Pads on disks do NOT have a spring. They rely on a square, rubber seal to flex and return piston(s) and pad(s) back away. Again, your confusion worries me.
Sorry… MHO
You must be smarter than the engineers that designed the brakes for your motorcycle. The springs are there for a reason. Put them back on.
That keeps them simple and reliable and prevents them dragging on the drum.
Simplest answer is with no spring it would mean the brake shoe drags on the drum amd your brakes wear out in a week.
There are several other reasons involving safety and fuel efficiency.
Play with things you don't Understand the spring snaps them OPEN not shut
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