bonuslazer wrote:
I have a restored 1962 Vespa GL, and the front brakes are working fine, but the back brakes (foot brake) barely works. A friend took a look at my Vespa and said I needed to replace the sensor and suggested I purchase a "Switch, Rear Brake", which I did, but I have no idea how to replace this part... any suggestions?
The "sensor" your friend is referring to is juts a switch that controls your brake light. When you apply the rear brake, how does the pedal feel? Is there a lot of slack? Do you hear any scraping coming from the rear of the bike? Does the bike slow down at all when you apply the rear brake, even with extra pressure?
If you have a lot of play in the pedal, try adjusting the cable (get a book, follow the instructions). If that doesn't fix the issue, you may have an oil leak from your rear axle seal or worn brake pads. Get a new set of pads and a new seal, pull the rear drum and replace and adjust. Should fix the whole problem.