Noise Reduction and Two-Stroke Engines

If you have an "idea on reduction of noise of an 2stroke engine", share it with us.

I've got a lot of concepts in my brain, but I wouldn't ask the people on here for help, unless I had some idea of acoustics and how to reduce noise, if I were you.

The first thing that comes to mind is:

1. A muffler

2. If already equipped with a muffler, a larger, or more efficient, one.

Cap the end of the exhaust pipe, drill a 9/16" hole in center of cap, insert a tube with corresponding outside diameter about 6" into hole and then weld. Leaving about a 7/16" inside diameter hole at the end of exhaust pipe, reducing wranggg!!!! to puff-puffffff...

I assume that you are working with an air cooled engine? If so, many times more noise is radiated out of the engine, than comes from the exhaust. The exhaust noise is easy to fix with a muffler, the noise radiated from the engine is the hard one. Please give use a little more information to work with, since different engine makes need different things done to them to quiet them down.

The adequate muffler is important. But use the wright one, because 2-stroke engines do suffer from exhaust restraints. Excess backpressure in the exhaust will make efficiency drop dramatically.

As mentioned, also look for enclosure sound protection. Maybe you could relocate the engine, or install a shroud with ventilation to the exterior of the building to help reducing noise inside.

If the rickshaw is small, you could collect the noise in a heat proof plastic bag. At the end of the day, you could just empty the noise in another noisy area.Hopefully,no one will notice.