Racing roadkill
Guru
The lights have springs and things behind the lamps and reflectors, and the red plastic cover used to fly off, followed by the spring launching the lamp and reflector into the scenery.Those rear lights used to shake themselves to bits on a stiff racing frame. On early season evening chain gangs at least one rider had to stop every time to gather up the various parts that had strewn themselves along the road, and over any sort of distance it ended up with only a few riders able to occupy the rear position because everyone else's light had packed up.