Here is a random one for you. I was out for a walk on my lunch break when I came across someone stood next to his broken down bike. He had no clue about bike maintenance so I had a look for him. Turns out his front brakes had seized on while he was riding (no idea how he stayed on the bike). The front brake lever was solid with no give at all and there was leaking brake fluid from the top reservoir. However, the inspection glass on the reservoir showed no fluid. Question is what caused them to seize and why did it not become un-seized once stopped? Surely if there was no fluid in the reservoir then the lever would just be spongey (air). The lad had also recently had the bike in for an MOT. About the bike: Kawasaki er6n, 2006, poor condition (very dirty running gear and brakes)
Sometimes a dragging pad can cause the fluid to boil which then expands in both directions, into the caliper piston and back up the line.
Worn Pads will cause the pistons to extend further and further and due to this bike having what sounds like ZERO maintenance, then the shyte and crud on the pistons will cause them to sieze up in the extended position.
