The muffler silencer

[Louis]

I have a 45 blower with a muffler just like the judsons and wow it's loud. I'm thinking about hooking up another muffler in line and mount it under the truck. I know Duane puts 2 side by side on his machines. What set up would make the least noise? I like my hearing

Thank You

 

[bob vawter]

one up and one under the van with a turndown......

 

[Jay D]

Also what rpm level you run the blower at will affect how loud it is. there is a big difference in noise with a blower run at 3600rpm vs. 3200rpms. I run my 45 (4MP) blower at 3400rpms most of the time

 

[Shane T]

I run my back-up unit with a Roots 45 exactly as Bob has suggested above. Its still louder than I like and its only running at 2700 rpm. I will say that most of the noise is coming from inside the van, very little coming from the down turn. I don't think you can quiet that blower with mufflers running 3400. Why are you running it so fast? Is it choked down somewhere?

 

[Jay D]

More vacuum at 3400 cfm, mine has a silencer and is plumbed 2.5" all the way thru the silencer. Any blower is quieter at lower rpms. He didnt mention what rpms he is running his at.

 

[bob vawter]

Flowmaster SEEMS to work the best...
and there IS an in an' a out.......if you GOT room underneath for a THREE chamber...you'll be very surprized.....
they last forever too........
the turn down underneath
is the most important part...



RPMs.....? around 1900........my blowers last forever!

 

[AshleyMckendree]

Flowmaster SEEMS to work the best...
and there IS an in an' a out.......if you GOT room underneath for a THREE chamber...you'll be very surprized.....
they last forever too........
the turn down underneath
is the most important part...



RPMs.....? around 1900........my blowers last forever!

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They last forever, because they are only pulling a litte more air than a portable. Just sayin.

 

[Louis]

It is running at 2700 under load. Can I run this thing faster with a 22 hp kohler. It sounds like the motor is working hard at 2700.

 

[Jay D]

belt or direct Drive? I would bump it up to 3000-3400 rpms. air cooled engines run great at that rpm, even in the summer heat of the central valley 100+ degree days. My 20hp runs fine direct drive to my 4MP blower. do run a second muffler if you are bumping up the rpms

 

[Louis]

Belt drive.

 

[trojancarpetcare]

I have been trying to get my machine very quiet, and it seems really hard. its much quiter from when i didnt have a mufler so i guess it will have to do.

 

[Louis]

How about Cobbs silencers? Anyone every see or hear one on a machine?