I've had this on a blog since 2010 and I'm receiving good feedback on this alternative, so it's time to share here for those who have the classic Sturmey Archer hubs.
There are replacement lubricators (oil caps) available for the old Sturmey Archer 3 speed and other internal gear bicycle hubs for roughly $2.00, but then you can end up paying $9.00 or more for shipping. This is a really inexpensive alternative to replacing the oil cap.
I used a nylon, 1/4"-20 machine screw with the threaded part cut down to roughly 1/8" long. I used a hack saw blade to cut the screw. I paid $0.45 for a pack of 3 screws at my local hardware store. Simply unscrew your broken lubricator from the hub and replace it with your modified nylon 1/4"-20 machine screw.
Link to my original blog: http://cycle-truck.blogspot.ca/2010/11/sturmey-archer-3-speed-hub-oil-cap.html
There are replacement lubricators (oil caps) available for the old Sturmey Archer 3 speed and other internal gear bicycle hubs for roughly $2.00, but then you can end up paying $9.00 or more for shipping. This is a really inexpensive alternative to replacing the oil cap.
I used a nylon, 1/4"-20 machine screw with the threaded part cut down to roughly 1/8" long. I used a hack saw blade to cut the screw. I paid $0.45 for a pack of 3 screws at my local hardware store. Simply unscrew your broken lubricator from the hub and replace it with your modified nylon 1/4"-20 machine screw.
Link to my original blog: http://cycle-truck.blogspot.ca/2010/11/sturmey-archer-3-speed-hub-oil-cap.html