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Hello my 49cc is so loud I have stuffed the exhaust with steel wool and I have also tried to make my own silcencer but that didn’t work i ride it in my backyard and I need to make it quieter hers some videos thanks in advance noah Pocketbike - Google Drive

 

[MrKitty]

Install one of these on the end of the stock exhaust system this will make the bike as quiet as it's going to get.

Search Briggs & Stratton muffler

It will rob some performance so I recommend putting it on a coupler so you can take it off when you want the power and don't care about the noise.

This is what we used back in the day when we wanted to ride in parking lots and didn't want anybody to really notice. ( Always ask before you ride )

 

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Ok thanks I also used a db app and it went up to about 112 right next to the engine and about 104 at the exhaust and I’m not sure if the steel wool in the exhaust could be causing this but it smokes a lot so would there also be a way to make the engine a little bit quieter thanks

 

[MrKitty]

The mix should be 50:1 on a well broken in engine I use Stihl 2-stroke oil synthetic it smokes alot less

These engines are just a copy of the Robin/Subaru NB 411 weed eater engine they were never designed or intended to be a quiet running engine.

 

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Ok thanks and I had been using 25:1 and I did try 40:1 so b
That would explain the smoking how much quieter would the Briggs and stration muffler make it

 

[MrKitty]

It makes it a lot quieter.

One other thing you can do is wrap the exhaust that will help deaden a lot of the sound coming out of the j pipe

Robot or human?

 

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Ok thanks I might have some already wrap and also I’m not sure if this is because I have stuffed the exhaust with steel wool but it dosent like have any power until it’s moving but I will try wrapping the exhaust

 

[MrKitty]

Try taking the clutch bell off and sanding the inside of the clutch Bell so that the clutch has some grip to it.

You don't need to worry about using the drill just use 100 grit sandpaper.

 

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Ok thanks I will try wrapping the exhaust first and then the muffler