P.S. Don't hit pitbulls in the face with steel seat posts, no matter how vicious they are and how awesome it would feel. Make one of these and whack your frame or something to scare it away, yeah? This is a noise making tool. No more. No less. Here goes.
Step 1: Materials
Your best bet is to go to home depot with your "noise stick" and test different diameters of PVC. Mine happened to fit snugly in a 1 inch piece. I definitely haven't perfected this system, but this bike is notably the junkiest ride on the road. I don't care about scratching the frame, nor do I care about the whole thing coming apart. I build free bikes out of scrap parts. So, i attached the pipe onto the top tube and the down tube with pipe clamps. The better way to do this would be to use three pipe clamps; one on each of the bike's tubes and two on the PVC. Once again, though, what I have is stout, and bloodlust makes aesthetics irrelevant. for those of us who like scanning for bulleted lists,
1- correctly sized PVC pipe
2 (4)- Pipe clamps (size dependent on top/bottom tube and PVC diameters)
1- roll of electrical tape because it's one of my favorite materials for DIY projects.
Step 2: Whipping It All Together
Be safe, and check out the walkthrough about the hookah i built this weekend.