Finn Lassen wrote:

Here's my attempt on a simple muffler.

2" tubing, 7.75" long, 40 1/4" holes and end fishtailed to 1/4" (x 3"),
2.7 sq inch slightly less area than the 2.9 sq inch of the 2" tubing,
but more than the 2.2 sq inch area of the 1.75 header tubes. All tubes
are .035 walls.

  SNIP

Is there any way to send a sound? Maybe a .waw file?

Finn

Probably but I don't have the capability to test it. A Radio Shack
DB meter held at some standard distance from the plane would be a better

way

of quantifying noise.

Paul Lamar

Finn,
    Since my muffler is very similar, 2" tubing 15" long with 5/16" holes
and fishtailed to 1/2", I am highly interested in any results.  I was
looking at Sound Meters on the Web, but most are rather expensive for a one
time use, however, I'll take Paul's suggestion and look into what Radio
Shack has to offer.

Ed Anderson

I'll bring my Radio Shack DB meter to Tracy's flyin as it sounds like (pardon the pun)
 both of you guys will be there. Also Finn I can meet you about the 8th or 9th of Dec
as I will be landing in Tampa via UAL. for a North Fl visit with Tracy and Art Luther.

Paul Lamar
 
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