Tamaroak wrote:

Another question: Which is easier on the engine, ten miles up on plane
for a half hour at 3600 rpm or ten miles for an hour and two thirds at
hull speed at 1600 rpm?

The same engine producing less horsepower will last longer than if it
produced max power ... you have a certain amount of horsepower hours in
the machine, take them all out in a hurry or stretch them out, it's up
to you.

Rick

Another question: Which is easier on the engine...

.... ten miles for an hour and two thirds at
hull speed at 1600 rpm?

The same engine producing less horsepower will last longer than if it
produced max power ... you have a certain amount of horsepower hours in
the machine, take them all out in a hurry or stretch them out, it's up
to you.

rick just gain the hammer mechanic's point of view. Like most things hammer
mechanics say, it is wrong.

"horsepower hours" (what a weird thing for rick to say) go up as the engine is
used "more nicely". Expensive, finely tuned Indy race car engines won't go
that many miles past 500 at WFO throttle, but will last thousands of hours if
you don't beat the crap out of them.

That said, a boat built and engined to plane is not a boat an owner usually
wants to piddle up and down the bay in. such boats usually have just two
throttle positions, Go and No-Go.

rick, it is not possible to have a rational discussion with you. Try as I have
in the past, you ALWAYS fail to keep up and then you spout superstition and
voodoo science as the fact of the realm. In fact, if you were to read your
post below you STILL have no idea how the prop is used to prelube an engine.
You just aren't capable of understanding.

From: Rick
Date: 6/25/2004 11:04 AM Eastern Standard Time
Message-id: t

JAXAshby wrote:
Only one more of his one line retorts rather than address the issues ...

Jax, you are running true to form. You have nothing on which to base
your arguments, you have been trashed again by those of us who know and
do what you can only dream about, and now all you can do is paste lame
insults.

You are a loser Jax. A Walter Mitty wannabe loser who has nothing but a
computer to fill out an empty existence.

What's the matter loser, afraid to talk about engines? You should be you
don't know squat about them and it shows.

Tell us again how pulling the prop over "prelubes" the engine ... Don't
you want to talk about the engines that actually prevent oil from
entering the oil pump during a start? Way over your head but that
doesn't take too much as we all can see.

Bwahahahahahahahahahah What a freakin' moron.

Rick

gene, oil pumps (on the engines under discussion) sit in the oil sump bathed in
oil. They are ready to pump oil on rev #1.

How about having enough experience to know that outside of a
theoretically perfect pump, that the pump is not primed and won't be
so without spinning it fast enough?

How about all the parts in the engine being motored over that run dry
until you are spinning the engine over fast enough to splash the oil ?

which parts is that? The pistons?

the cylinders have an oil film on them to begin with. the bearings requiring
pressure oil do not have pressure oil to them until they have pressure oil to
them, which they can't get until the galleys are first full of oil and then
pressurized.

you were supposed to have learned this well before you got that license you
brag about having.

the pump is not primed and won't be
so without spinning it fast enough?

you obviously don't have a clew how oil pumps have been engineered on ic
engines for the last 110 years.

the pump is not 100% positive
displacement

oh, it is negative displacement what % of the time?

Not bragging Jax.

yeah you are, and about a license a savy 18 year old kid could get.

How about sour grapes because you didn't get the same certification
that your 18 year old friend got?

I was studying physics when I was 18.

No training, no age requirement, no skill level, no standard of
competence.........

At age 12, I was being paid to repair engines that men my father's and
grandfather's ages were unable or willing repair.

Fixing engines is easy. Knowing what to fix is the hard part. For most
people.