O.K. - You might try this cheap way to silence pipes and I think you will be amazed. It does require a trip to the hardware store and some simple fab work and a few brains.
Cut a piece of flex tubing about 4 or 6 inches long that's the closest diameter to the inside diameter of your side pipes. Buy some stainless steel screen to fab up end caps on both ends of the flex pipe, then fill the trap up with stainless steel pot scrubber pads.
The last set I made had a 2 3/8" pipe that went through the middle of the trap surrounded by the pads. You can tune the sound that you want by varying the number of pads that you use by cutting the trap shorter or longer, and the optional diameter of the short piece of pipe inside will give you your performance and some sound. The flex pipe will wiggle and bend around the exit of the side pipe up into the side pipe where you can screw it into the pipe with a couple of stainless screws. The last set I made was a little longer where I attached 2 handles on the flex pipe that also suported the center pipe, and the handles made it a snap to pull them out. That way you can reach up there and wiggle the traps in or out according to the current noise level that you want. Pretty simple really and it requires 6 or 8 pads per side. Later,,,,,,,,,,,,,,,,,,,,,,,,,,,
cobrashock
