porpoising and chine walking.....what cause's it??
#1
Were doomed!
Charter Member
Thread Starter
porpoising and chine walking.....what cause's it??
this is more directed at people who build boats like Sharky and Steve1 but its open to all comments...
So i was wondering...what causes the two and how can it be avoided....both during and after the boat is built? Is it more of a weight/balance thing? is part of it due to worksmanship on the hull... i.e. hook/rocker in the hull??? Just curious.
So i was wondering...what causes the two and how can it be avoided....both during and after the boat is built? Is it more of a weight/balance thing? is part of it due to worksmanship on the hull... i.e. hook/rocker in the hull??? Just curious.
__________________
-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
#2
Member #2 ....Jeeezz
Charter Member
Join Date: Oct 2000
Location: Kicked to the curb
Posts: 2,345
Likes: 0
Received 0 Likes
on
0 Posts
All kinds of chit .... but most cases are solved through trim
G
G
__________________
Look Fast *** Sold Sold Sold *** ... F2 Cigarette Top Gun in OSO Classifieds
Look Fast *** Sold Sold Sold *** ... F2 Cigarette Top Gun in OSO Classifieds
#3
Guest
Posts: n/a
SOME BOATS AT SPEED START LETTING THE DRIVE OR DRIVES START SWAYING BACK AN FORTH WITCH WILL GET WORSE AND WORSE AS YOU GO FASTER,, WITH OUT HYD. STEERING ,SO AD HYD STEERING AND ALOT OF TIMES IT WILL CORRECT THIS CHINE WALKING
388 'S HUSTLERS DO IT DUE TO TO MUCH LIFT BUILT IN THE HULL TO GET IT TO RUN IN THE 80'S ,,,,,,,A WHILE RIDE AFTER 95 EVEN WITH STEERING
388 'S HUSTLERS DO IT DUE TO TO MUCH LIFT BUILT IN THE HULL TO GET IT TO RUN IN THE 80'S ,,,,,,,A WHILE RIDE AFTER 95 EVEN WITH STEERING
#4
Were doomed!
Charter Member
Thread Starter
Bobby, how can a boat have too much lift? I guess there has to be a compimise but i thought the less wetted surface the better.....to a point ofcourse....
__________________
-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
-Wally
Money can't buy happiness, but it can buy horsepower. And I've never seen a sad person hauling a$$!
#7
The Senior Charter Member #1070
Charter Member
Happens alot when people add extension boxes and mess up the CG of the boat... There is a 38' TG at the lake that has boxes and when running above 70mph it porpoises so bad that it will actually start leaving the water on its own... even when the water is like glass..... JBK can vouch for this for he has witnessed it as well....
__________________
(What you see, is what you get!)
"Live every day to it's fullest for you give a day of your life to it."
(What you see, is what you get!)
"Live every day to it's fullest for you give a day of your life to it."
#9
Registered
Join Date: Jan 2001
Location: ST. Louis, MO, USA
Posts: 1,658
Likes: 0
Received 0 Likes
on
0 Posts
Tbone,
I think I know who you're talking about.
I have to agree. It's been my experience the hull design, CG, drive height, trim angle, and prop choice can all affect porpoising.
Gary
I think I know who you're talking about.
I have to agree. It's been my experience the hull design, CG, drive height, trim angle, and prop choice can all affect porpoising.
Gary
#10
Member #2 ....Jeeezz
Charter Member
Join Date: Oct 2000
Location: Kicked to the curb
Posts: 2,345
Likes: 0
Received 0 Likes
on
0 Posts
That Gun can be corrected ....
Change X-dim
or
Larger dia props
or
Adj trim
G
Change X-dim
or
Larger dia props
or
Adj trim
G
__________________
Look Fast *** Sold Sold Sold *** ... F2 Cigarette Top Gun in OSO Classifieds
Look Fast *** Sold Sold Sold *** ... F2 Cigarette Top Gun in OSO Classifieds