Quiet exhaust system

Quiet exhaust system

Post by Donald J. Dicks » Tue, 20 Aug 1996 04:00:00


Hi

I know I'm paddling up stream on this one compared to the usual requests
but does anyone make a super quiet set of pipes(I'm prepared to lose horse
power). I spend a lot of time looking for wild life(skip the smart remarks
about checking out the bars) and its pretty hard to sneak up on anything
with a standard exhaust system. I'm not about to take up snow shoeing.

Cheers,
Don***son
--
Time is the best teacher. Unfortunately it kills all its students!

 
 
 

Quiet exhaust system

Post by Shane Zeppeli » Tue, 20 Aug 1996 04:00:00

Don,

I haven't seen any quiet pipes for a 2 cycle, but I did see where
someone put a 3 cyl. GEO motor in their snowmobile.  This thing ran
quiet, got 40 MPG, and went 80 MPH.  Maybe that would be the ticket.
Oh, you have to change oil every 3000 miles :-)

Shane

 
 
 

Quiet exhaust system

Post by Michael Ha » Tue, 20 Aug 1996 04:00:00


: Hi

: I know I'm paddling up stream on this one compared to the usual requests
: but does anyone make a super quiet set of pipes(I'm prepared to lose horse
: power). I spend a lot of time looking for wild life(skip the smart remarks
: about checking out the bars) and its pretty hard to sneak up on anything
: with a standard exhaust system. I'm not about to take up snow shoeing.

We see lots of wildlife where I ride. In fact some of them come
uncomfortably close. I myself don't think noise is the problem but how the
animals get harassed but some of us. If they get harassed they get
cautious or spooky if you will. Those bison and elk in Yellowstone didn't
get too worried about sleds...

As for noise try wrapping the pipes with Thermo-Tec wrap and eliminate any
vibration you can find. Exhaust springs can be filled with high-temp
silicone to reduce the ringing. Every little bit helps.

Michael

 
 
 

Quiet exhaust system

Post by Russell D Jacque » Wed, 21 Aug 1996 04:00:00

Quote:

> Don,

> I haven't seen any quiet pipes for a 2 cycle, but I did see where
> someone put a 3 cyl. GEO motor in their snowmobile.  This thing ran
> quiet, got 40 MPG, and went 80 MPH.  Maybe that would be the ticket.
> Oh, you have to change oil every 3000 miles :-)

Where did you see this GEO sled at? and who is building them?

Russell D. Jacques

Quote:
> Shane

 
 
 

Quiet exhaust system

Post by Shane Zeppeli » Sat, 24 Aug 1996 04:00:00

Quote:


> > Don,

> > someone put a 3 cyl. GEO motor in their snowmobile.

> Where did you see this GEO sled at? and who is building them?

> Russell D. Jacques

I saw this sled at the HayDay Races about 5 years ago.  It was near the
Phase II T-shirt booth that year.  I'll find out who the guy was and
post his name for you.

Shane :-)

 
 
 

Quiet exhaust system

Post by Byron Sheppa » Tue, 27 Aug 1996 04:00:00


Quote:
>Hi
>I know I'm paddling up stream on this one compared to the usual requests
>but does anyone make a super quiet set of pipes(I'm prepared to lose horse
>power). I spend a lot of time looking for wild life(skip the smart remarks
>about checking out the bars) and its pretty hard to sneak up on anything
>with a standard exhaust system. I'm not about to take up snow shoeing.
>Cheers,
>Don***son
>--
>Time is the best teacher. Unfortunately it kills all its students!

Hmmm, I've yet to see a "quiet" pipe/muffler combo.   No-one seems to
be able to estimate the power loss versus dB improvement that one
could get either so I think you are probably out of luck on that one.

As an aside, I know people conventionally think that noise harasses
the animals but from what I've seen it doesn't seem to bother them
very much.  Getting too close bothers them and chasing or following
them bothers them a lot more.   Probalby not a lot different from us
humans when you think about it...

I've gotten close (ie less than 10-20meters) to wolf, bear, moose,
wolf, muskrat etc.   In some cases it was because they were curious
what the sound was and seemed to be waiting until they could see what
it was and in other cases I seemed to have surprised them.    

The fact that I obviously surprised some of them initially puzzled me
but I guess it is because they heard the machine but weren't used to
the speed a sled travels at so didn't expect it to pop out into view a
second or two later.

Byron Sheppard
Vancouver BC.
95 EXT Powder Special
93 Panther

 
 
 

Quiet exhaust system

Post by Doug Mill » Thu, 29 Aug 1996 04:00:00

The latest issue of Race and Rally has a neat article about injecting
PFI (Peroxides) into the motor, which apparently is being tested
currently in Sweden. Supposedly it makes the sled much quieter.
-Doug Miller

Quote:
>>I know I'm paddling up stream on this one compared to the usual requests
>>but does anyone make a super quiet set of pipes(I'm prepared to lose horse
>>power). I spend a lot of time looking for wild life(skip the smart remarks
>>about checking out the bars) and its pretty hard to sneak up on anything
>>with a standard exhaust system. I'm not about to take up snow shoeing.
>>Cheers,
>>Don***son

 
 
 

Quiet exhaust system

Post by Chuck Ri » Sat, 31 Aug 1996 04:00:00


: The latest issue of Race and Rally has a neat article about injecting
: PFI (Peroxides) into the motor, which apparently is being tested
: currently in Sweden. Supposedly it makes the sled much quieter.
: -Doug Miller

That was a really interesting article wasn't it? Based upon the info
presented, that looks like a win/win deal. I wonder how long it will
be before we see adds for PFI?