fleebell
Member
I finally got my homemade exhaust pipe finished and mounted on the trike today. The main exhaust muffler tube is 12" long and 1 3/4" diameter. The inlet tube sticks into the main tube about 4". It is welded shut on the end and has many 1/4" holes drilled into the sides of it. After the inlet tube the rest of the main tube is filled with 4 of the stainless steel scrubbies used for washing dishes.
It's not a whole lot quieter (I can't seem to make a real quiet one for some reason) but it does cut out pretty much all of the high frequency sounds and the little 2.5 hp engine now sounds like a regular 4 stroke motorcycle engine. It sounds a little better than the one I built for the pocket bike engine too. You can see my new spring loaded idler pully in the pics too. I don't why it looks bent one of the pics. Optical illusion I guess. It works much better than the other idler did. You can also see all the holes I drilled in the air cleaner cover on this pic too.
It's not a whole lot quieter (I can't seem to make a real quiet one for some reason) but it does cut out pretty much all of the high frequency sounds and the little 2.5 hp engine now sounds like a regular 4 stroke motorcycle engine. It sounds a little better than the one I built for the pocket bike engine too. You can see my new spring loaded idler pully in the pics too. I don't why it looks bent one of the pics. Optical illusion I guess. It works much better than the other idler did. You can also see all the holes I drilled in the air cleaner cover on this pic too.