4 Chime PVC Train Whistle

Parts: 3/4" PVC pipe and end caps; 3/4"-1/2" reducers; 1/2" PVC for mouth tube and from reducers into the manifold; 4" cap; 4" threaded sleeve; 4" clean out plug. I didn't glue anything except for the reducers and 1/2" pipe into the manifold (I used JB-Weld). This whistle is tuned to minor 7th chord, roughly E-G-B-D, with the E's speaking length of about 10". Check out this Instructable for the basic construction plan: http://www.instructables.com/id/Simple-PVC-Whistle/