> >Jerry Hey wrote:
>>
>> Is there a significant performance gain with the tuned version? I
>> have got the impression that exhaust pipe length is not so important
>> as unrestricted breathing. Has anyone built one of these mufflers?
>> Is the simple version just an empty can that the exhaust dumps into
>> from the side? What type of Stainless? Is ".040 inconal" a
>> complete specification? Jerry
>In theory yes Jerry on the tuned version. Not to my knowledge has any
>one built one yet. I am not sure it would fit in your cowl as the diameter
>is about 10 inches while the engine is about 6 inches from center line
>so the width of the cowl in that area would have to be about 32
or more inches
>wide. Brian Trubee designed a simplified version with square runners welded
>up from flat sheet that you might want to try. It is possible to make it
>slightly more compact as the runners could be rectangular.
>
>Just an empty can. .049 thick 316 stainless ought to be about right.
>0.065 thick 316 SS would probably make it bullet proof.
>Inconel (pure nickel and chrome) is great but expensive.
>
>Paul Lamar
Jerry Hey wrote:
>Paul, it is easy to find 6" O.D. SS tubing remnants in this area.
>It is used in the vinyards. It is type 304. The gentleman I talked
>to thought both 049 and .063, were available, but he did not want
>to walk out the the remnant pile to find out. I don't know how 304
>stands up to the heat. Very hard on tools as I recall. Jerry
304 will work. Not quite as good as 316. There are tricks to
drilling SS. As I recall you need to keep the pressure on and
keep it cutting till it is done. A plasma cutter is no problem
however. Tracy just bought a new one. You might find a sheet metal shop
that does commercial kitchen
Paul Lamar
I have a plasma cutter. I used to build the turbo exhaust manifolds
for the "TurboSuzuki" (60 cu. in-- 100hp). I made about 20 of them
before the company went belly up. I'm thinking I will make up a few 304
simple tangential mufflers to experiment with. Jerry
That's great Jerry. I am sure some other people need mufflers on here.
Perhaps you would make some for them too. Both tuned and untuned.
OK folks here is your chance. Bug Jerry for mufflers :-)
Paul Lamar
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