First Project

[BikerBee]

Hey guys. I'm glad to join this community and hope it is a useful source in my current project. Hopefully I can learn much and share what I learn. I am working on sprucing up a 1989 SR300.

First question: What is this tiny screw on the rear of the chain stay?

 

[black lightning 1987]

Some years/models have screws, some pop rivets. You probably have another on the underside of the left chainstay, or perhaps an open hole. I don't know why they had them but assume it had something to do with the manufacturing process. They may have filled the stays with Argon when welding to prevent weld contamination in case the weld penetrated the base material completely. If filling with Argon they would have needed a hole at each end of the stay. The front of the stays are vented inside the bottom bracket shell.

 

[BikerBee]

There sure is a little hole on the under side of the left side stay. It appears to have been covered up with a rivet and painted during original fabrication. Thanks for the reply.