"Wayne.B" wrote in message
...
On Mon, 02 Aug 2004 15:41:54 GMT, "Doug Kanter"
wrote:
I'm using the term "speedboats" to describe boats which sound like they
have
(and probably do have) a pair of 400+ cubic inch motors in the back? In
order to achieve their purpose (speed), is it absolutely necessary for
them
to be as noisy as they are, or are they just designed that way, in the
same
way some morons alter their motorcycles because "loud pipes save lives"?
And, when they're idling, why do they sound (and smell) as if the engines
are only firing on half their cylinders?
=====================================

It's just more thoughtless behavior from the ego challenged "look at
me" crowd. There's no reason at all why a pair of 454s has to be
louder than any other well mannered I/O except that the owners prefer
it that way. Unfortunately in their "it's a free country behavior",
they bring down a lot of unwanted attention and enforcement on the
rest of us. Much of the support for "Save the Manatee" madness
originated with waterfront property owners who were fed up with the
constant noise of jet skis and go fasts zipping up and down the
shoreline at high speed (and decibel levels).

The unique stumbling idle is from the use of high performance cam
shafts that are designed to run well only at top RPMs.


Interesting, that last line. Does that explain why some of these boats smell
like unburned gasoline's blarping out of the exhausts, or is that another
issue?

Interesting, that last line. Does that explain why some of these boats smell
like unburned gasoline's blarping out of the exhausts,

That is exactly what is happening. A high performance cam will hold the intake
and exhaust valves open at the same time, longer than a normal cam. (overlap)
At high RPMs when air is flowing fast and plugs are firing 50 or 60 times a
second, that is a good thing but at lower RPMs you are actually sucking intake
mix directly into the exhaust.You can also be popping back through the carb.
You will see the same thing with race cars ...
....and 2 strokes.

"Greg" wrote in message
...
Interesting, that last line. Does that explain why some of these boats
smell
like unburned gasoline's blarping out of the exhausts,

That is exactly what is happening. A high performance cam will hold the
intake
and exhaust valves open at the same time, longer than a normal cam.
(overlap)
At high RPMs when air is flowing fast and plugs are firing 50 or 60 times
a
second, that is a good thing but at lower RPMs you are actually sucking
intake
mix directly into the exhaust.You can also be popping back through the
carb.
You will see the same thing with race cars ...
...and 2 strokes.

Great. As if the 100+ decibel noise weren't enough.....

I do agree these folks may be calling undue attention to boats. It may be just
a matter of time before we are all running air pumps and catalytic converters.

"Greg" wrote in message
...
I do agree these folks may be calling undue attention to boats. It may be
just
a matter of time before we are all running air pumps and catalytic
converters.


I brought up the subject because after being a chauffeur for my 15 yr old
son and his friends for most of the day, I ran out of time to get the boat
in the water. So, I meandered down to the inlet where Irondequoit Bay meets
Lake Ontario. Every 30 seconds, one of these needle-dick boats came blarping
through the inlet. Even at idle speed, it completely drowned out ALL other
sound. I couldn't hear the guy standing 10 feet away from me, who was
yelling about why these dumb boats aren't illegal.

I couldn't hear the guy standing 10 feet away from me, who was
yelling about why these dumb boats aren't illegal.

I don't think they should be illegal but I do think the folks who own them have
a responsibility to use them in places where they don't unnecessarily bother
people. These are really offshore race boats, take them offshore and enjoy!
Like most things, if people don't use self dicipline the government will step
in and impose law.
My favorite example is the SCUBA industry. In the 60s they took it upon
themselves to regulate themselves and almost a half century later, in a time
where the government has it's big nose in everything remotely dangerous, SCUBA
is still pretty much self regulated.

"Greg" wrote in message
...
I couldn't hear the guy standing 10 feet away from me, who was
yelling about why these dumb boats aren't illegal.

I don't think they should be illegal but I do think the folks who own them
have
a responsibility to use them in places where they don't unnecessarily
bother
people. These are really offshore race boats, take them offshore and
enjoy!
Like most things, if people don't use self dicipline the government will
step
in and impose law.
My favorite example is the SCUBA industry. In the 60s they took it upon
themselves to regulate themselves and almost a half century later, in a
time
where the government has it's big nose in everything remotely dangerous,
SCUBA
is still pretty much self regulated.

Makes sense for the scuba biz. I suspect much of the health of the industry
is based on tourists who pay to get trained quickly, jump in the water and
see nice fish & coral. That requires quite a bit of trust from the consumer,
and that means the industry had better have its head screwed on right. If
the feds were involved, congress would still be debating whether the bends
was a real medical problem or not. :-)

If they were decent people they would use Silent Choice. Larry Hill

These are really offshore race boats, take them offshore and enjoy!
Like most things, if people don't use self dicipline the government will step
in and impose law.

"Larry Hill" wrote in message
...
If they were decent people they would use Silent Choice. Larry Hill



I actually haven't figured out what is more amusing, the fact that you guys
are actually talking about boats on this forum, or the fact that you don't
have a clue about how these boats ACTUALLY operate.

Yes, most performace boats do have switchable exhaust of some sort installed
on them. Not all, but most. What you have failed to mention is the fact
that these systems cannot be used above a certain RPM level. I realize this
doesn't justify not using them while idling.

These boats are manufactured to perform at high speed. They have big block
engines in them. They are going to be loud. We all have to pay taxes and
someday we will all die. Facts that we have to live w/ and move on. Get
over it.

Buck

On Mon, 2 Aug 2004 21:09:26 -0500, "buck183"
wrote:

Facts that we have to live w/ and move on. Get
over it.

Buck
=========================

Not true, you're the one who needs to "get over it".

Grow up and assume some responsibility.