How to prevent brake quick release from opening on rough roads? On rough roads or when there is a lot of vibration, the quick release on my front brake will sometimes pop open. Is there a way to prevent this from happening?



If it helps, the bike is a 1995 Trek 370, which has Shimano 250EX brakes and Shimano Exage 300EX levers (according to BikePedia).
Presumably the QR lever originally had enough friction to stay closed but has worked loose or a plastic washer or bushing that provided the friction has degraded. Obviously keeping a brake functioning is a high priority 

Probably the simplest solution is to use a bit of tape to hold the lever closed, but tape may come off. Maybe you could use a small zip tie or the type of wire used to stop bolts coming loose.