On 21 Jan 2006 09:31:38 -0800, "markvictor"
wrote:

"The first part of the answer in determining how deadrise affects
performance is another question: deadrise measured where? If the angle
between a horizontal plane tangent to the keel and the chine is
measured just aft of the bow, most modern boats will measure around
45° or more. If measured just forward of the stern, the deadrise may
be as little as 5°. The days when deep-V hulls carried the same high
angle of deadrise nearly constantly from bow to stern is long gone.
Why? Because they didn't perform very well."

Hey John, this is a pretty fair explanation of the reason for using a
measurement somewhat forward of the transom for a published spec...It's
not so much of an average angle, as it is the angle at the widest
"wetted" area of the hull at speed..the low deadrise at stern provides
stability, especially with engines mounted well aft.. a high angle
carried all the way aft tends to make a boat "porpoise" at speed...too
low an angle causes instability when turning at speet, too rapid a
transition and you get a boat that meanders at low speed, and can
develop low pressure areas at speed that can negate lift or planing
ability..

The definition you provided makes perfect sense! I've just always thought
incorrectly. Thanks for screwing my head on properly.
--
John H

******Have a spectacular day!******

JohnH wrote:
On 21 Jan 2006 09:31:38 -0800, "markvictor"
wrote:


"The first part of the answer in determining how deadrise affects
performance is another question: deadrise measured where? If the angle
between a horizontal plane tangent to the keel and the chine is
measured just aft of the bow, most modern boats will measure around
45° or more. If measured just forward of the stern, the deadrise may
be as little as 5°. The days when deep-V hulls carried the same high
angle of deadrise nearly constantly from bow to stern is long gone.
Why? Because they didn't perform very well."

Hey John, this is a pretty fair explanation of the reason for using a
measurement somewhat forward of the transom for a published spec...It's
not so much of an average angle, as it is the angle at the widest
"wetted" area of the hull at speed..the low deadrise at stern provides
stability, especially with engines mounted well aft.. a high angle
carried all the way aft tends to make a boat "porpoise" at speed...too
low an angle causes instability when turning at speet, too rapid a
transition and you get a boat that meanders at low speed, and can
develop low pressure areas at speed that can negate lift or planing
ability..


The definition you provided makes perfect sense! I've just always thought
incorrectly. Thanks for screwing my head on properly.
--
John H

******Have a spectacular day!******

Evidently deadrise must only refer to the angle of the hull at no
specific point. Every spec I've read in new boat catalogs reference the
"deadrise at transom". This definition agrees:

http://www.boats.com/glossary/D.jsp

There are others that refer to the widest part of the boat. I guess the
moral of this story is no one can simply refer to "deadrise" without
adding the point on the hull where it was measured.

Dan

On Fri, 20 Jan 2006 16:07:00 -0500, Harry Krause
wrote:


"This" newsgroup would be farther on the road to restoration if you,

We wouldn't have to be restoring it, if it wasn't for the likes of
you.

Netsock, Smither, and a few others would simply crawl back into your
caves of origin. You haven't added anything new, original, or of value
since you were released from custody.

Funny. You are by far the number one person, who has contaminated this
group with OT garbage, political rants, insults, and lies.

If you really care about this group, YOU crawl back under that rock
you came out of.
__

"It's just about going fast...that's all..."

http://home.columbus.rr.com/ckg/

"This" newsgroup would be farther on the road to restoration if you,


Netsock wrote:
We wouldn't have to be restoring it, if it wasn't for the likes of
you.


Why can't you just ignore him?

Harry is certainly a PITA but he's just one guy. Also, he
occasionally posts about boats, which more than can be said
of many of the fascist cretins obsessed with him.

Then you go tossing personal barbs at Chuck, even going so
far as to insult his wife.

Are you proud of that?

DSK

On Mon, 23 Jan 2006 09:10:14 -0500, DSK wrote:


Why can't you just ignore him?

I can. In fact, Our Klass Klown Krause, is just a couple steps away
from going back in the Krazy Kan.

Harry is certainly a PITA but he's just one guy. Also, he
occasionally posts about boats, which more than can be said
of many of the fascist cretins obsessed with him.

Krause is a liar...plain and simple. And his plagiarized boating posts
don't even come close to offset his spewage ratio.

Then you go tossing personal barbs at Chuck, even going so
far as to insult his wife.

Are you proud of that?

Sorry sport...you've got me confused with some one else.
__

"It's just about going fast...that's all..."

http://home.columbus.rr.com/ckg/

Netsock wrote:
On Fri, 20 Jan 2006 16:07:00 -0500, Harry Krause
wrote:


"This" newsgroup would be farther on the road to restoration if you,

We wouldn't have to be restoring it, if it wasn't for the likes of
you.

Netsock, Smither, and a few others would simply crawl back into your
caves of origin. You haven't added anything new, original, or of value
since you were released from custody.

Funny. You are by far the number one person, who has contaminated this
group with OT garbage, political rants, insults, and lies.

If you really care about this group, YOU crawl back under that rock
you came out of.
__

"It's just about going fast...that's all..."

http://home.columbus.rr.com/ckg/
Netsock,
By paying him attention or even responding to him, you are giving him
exactly what he wants,

Ignore him, even if he makes insults or trolls for arguments and fights.

--
Reggie
************************************************** *************

Q. What's the difference between a brown-noser and a ****-head?
A. Depth perception.
************************************************** *************

On Tue, 21 Feb 2006 09:49:23 -0500, Harry Krause
wrote:


Deadrise can be measured at the transom, too. OR just about anywhere
along the hull bottom. Traditionally, if the transom deadrise is not
wanted, it is measured at the beamiest part of the boat, typically
amidships.

Somebody has been pokin' around on the net again...
__

"It's just about going fast...that's all..."

http://home.columbus.rr.com/ckg/

Netsock wrote:

Harry Krause wrote:

Deadrise can be measured at the transom, too. OR just about anywhere
along the hull bottom.

Somebody has been pokin' around on the net again...

Krause *is* the jerk bait of this NG.

--
Skipper