I don’t know you Bob and don’t take this the wrong way but my best guesses are A: because you’re too old, and B: because you haven’t got enough money,
Someone on here said it improved the overall comfort of the seat. Obviously not for riding in the wet. Andy
But if they did... Their Rear brake wouldnt work right. Every time you tried to get from first to second, or second to third you would find yourself in neutral... And While you were waiting for parts to make her Perform better... Your friends would be sweaty from riding their Japanese model
Due to garage musical chairs, these baby R sisters (#406 & #427) ended up next to each other... A rare event indeed. Even got a bin in shot! Prize for naming the aircraft in the picture..