Silencer for flex pipe exhaust?

[BruceBanner1983]

Running a flex pipe exhaust on a 212. It has a baffle at the end, but the holes are pretty big. I’m not expecting it to be that quiet. I’d like to add a silencer. Preferably not a giant fart can like the ones they sell on Amazon. They look stupid, and I’ve no idea how to mount them anyway. Anyone know of a silencer that will bolt on?

 

[GW's Motorized]

Running a flex pipe exhaust on a 212. It has a baffle at the end, but the holes are pretty big. I’m not expecting it to be that quiet. I’d like to add a silencer. Preferably not a giant fart can like the ones they sell on Amazon. They look stupid, and I’ve no idea how to mount them anyway. Anyone know of a silencer that will bolt on?

You could mod a stock muffler to be a mini glass pack, that is a relatively popular mod. Or you could go with this muffler design that JarRaye came up with.

DiY small muffler/silencer. Stainless steel finish

While toying with the idea of a dual exhaust. I thought of somthing super clever. Homemade silencers that are the perfect size, sound great, and have a factory like finish. This is what my mind put together. You will need a welder or JB Weld can be substituted, empty paint can, tin snips...

motoredbikes.com

 

[Chainlube]

Ram one of these in the end with a muffler clamp.

Amazon.ca

 

[BruceBanner1983]

So I cut the bottom off an empty can of brake cleaner, and used steel stick to seal it to the end of the flex pipe. What I think I will do is get a mason jar lid and drill some holes in it, fill the can with either steel wool or fiberglass, drill some holes in the mason jar lid and can and just screw the mason jar lid on. Filled with enough baffling material, I don’t think a silencer is needed.

 

[Chainlube]

So I cut the bottom off an empty can of brake cleaner, and used steel stick to seal it to the end of the flex pipe. What I think I will do is get a mason jar lid and drill some holes in it, fill the can with either steel wool or fiberglass, drill some holes in the mason jar lid and can and just screw the mason jar lid on. Filled with enough baffling material, I don’t think a silencer is needed.

It has to expel the exhaust to the atmosphere cleanly or the fumes will back up into the engine and kill it. you need another perforated tube inside your can with insulation packed around it, then capped off.

 

[BruceBanner1983]

It has to expel the exhaust to the atmosphere cleanly or the fumes will back up into the engine and kill it. you need another perforated tube inside your can with insulation packed around it, then capped off.

Ok I’ll figure something out then

 

[BruceBanner1983]

It has to expel the exhaust to the atmosphere cleanly or the fumes will back up into the engine and kill it. you need another perforated tube inside your can with insulation packed around it, then capped off.

Since I won’t be using the spark plug wrench that came with the engine, I decided to see if it will work for a tail pipe. It fits perfectly in the end of the flex pipe. I’m going to drill lots of holes in it, and pack it with glass and use part of a soup can for the end cap, I’ll just drill holes through the soup can, muffler and tail pipe and stick a bolt straight through to hold it all together

 

[BruceBanner1983]

Gotta drill it out but it should work fine

 

[Chainlube]

Gotta drill it out but it should work fine

Now you got it. With the shape of the tip it's the Mercedes of the MB world.

1/8" drill is as big as I would go, that's what I used for the MB Challenge bike.

 

[BruceBanner1983]

It has to expel the exhaust to the atmosphere cleanly or the fumes will back up into the engine and kill it. you need another perforated tube inside your can with insulation packed around it, then capped off.

Is this enough holes, or do I need more? Basically tried to drill holes in 4 “sides” of the pipe.