Joined: Feb 2012
Posts: 19,381
Likes: 5,527
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Dirt usually doesn't produce a rattle. Flux that has dislodged from the joints does. I would first consider a bath. Completely strip the frame and expose every vent hole possible. Soak wit the hottest water you can. Follow up with solvent as best you can. Dry out with heat of some low level. End with Frame Saver. Then consider sew up glue... Andy.