Subject: Fish tail mufflers
From: Rotary Engine
Date: 3/10/2010, 11:23 PM
To: AAA Put this in the To box


Paul,
      What progress on the muffler?? . Am I better off to
manufacture the whole
thing in Oz as the freight is a big item as usual.? Also how effective is a
'fish ttail"
in reducing noise ?? Had never heard of one until last night, well one that
wasn't
attached to a fish anyway.  Neil.

I am still working on the RX8 version of as tangential muffler.

A fish tail is good but if used by itself with a 13B it must be beefed
up to with stand the super sonic shock pulsing. IMHO it is not really quiet
enough stand alone on a 13 B. Best used with an under the cowl
tangential muffler as a second muffler. The RX8 may be another
matter as it is quieter to begin with.

Where are you Neil? We have a new subscriber in Newcastle.

Paul Lamar


Do fish tails act anything like megaphone piping? Every time I look at
a fishtail design I think "it's a squished megaphone."

Vlad


I don't think so. The area is constant.

Paul Lamar


Paul
     That is my intention to use your muffler as a primary muffler
and if necessary add the fish tail if it is still on the :pain" threshhold.
Saw a photo of a muffler on a Mistral and the whole muffler has a delightful
cherry red glow !  Neil.
 Oh yes I am about 5 hours from Newcastle which is not that far. I do go
past now and then.

Neil Unger

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