Question on Low Water Pickup vs. Standard?
05-19-2003, 11:34 AM
#11
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FFO,
the handling didn't change,
water was glass smooth,
so anything would have been
noticeable.
Top speed ?
Since my class competitors at the
LOTO shootout may be "lurking"
( you know who you are )
I'll give you the answer my
brother-in-law thats in the
navy gives me when I asked
him what the top speed of
the boomer he was stationed on,
his answer: "Its classified"
No, seriously, let's just say it
was low, to mid 80's, with "x"
amount of people on board
and "x" amount of fuel on board.
( that should keep them guessing)
Come to the Shootout,
thats when the next results will
be announced
jt
the handling didn't change,
water was glass smooth,
so anything would have been
noticeable.
Top speed ?
Since my class competitors at the
LOTO shootout may be "lurking"
( you know who you are )
I'll give you the answer my
brother-in-law thats in the
navy gives me when I asked
him what the top speed of
the boomer he was stationed on,
his answer: "Its classified"
No, seriously, let's just say it
was low, to mid 80's, with "x"
amount of people on board
and "x" amount of fuel on board.
( that should keep them guessing)
Come to the Shootout,
thats when the next results will
be announced
jt
05-19-2003, 02:22 PM
#12
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Join Date: Oct 2000
Location: Kentucky - where the women are so fast we have to put a governor on 'em!!
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jt29olhp500s,
I have a test for ya - compare a set of 1.5's to a set of 1.36's and see if it makes a difference! Of course, you will need to prop accordingly - probably about 2" less pitch with the 1.36. I have a set of 1.36's in my boat, and I have been wanting to do this experiment myself to see if there is any meat to the theory (put forth by others) that my 1.36's are costing me top end speed. I just haven't been able to get my ducks in a row to perform this test.
I have a test for ya - compare a set of 1.5's to a set of 1.36's and see if it makes a difference! Of course, you will need to prop accordingly - probably about 2" less pitch with the 1.36. I have a set of 1.36's in my boat, and I have been wanting to do this experiment myself to see if there is any meat to the theory (put forth by others) that my 1.36's are costing me top end speed. I just haven't been able to get my ducks in a row to perform this test.
05-19-2003, 02:57 PM
#13
VIP Member
VIP Member
Budman,
I actually did this about
7 years ago on my 24 footer,
I didn't have a GPS back then,
so I don't have any " factual"
results.
acceleration was definetly
better with the 1.5,
2" increase in prop size
was about right, but RPM's
were slightly higher with the
1.5.
I know a guy with 1.36's,
he has Imco external steering,
I have latham, I don't know
if the pins are compatable,
may have to change end caps.
I could borrow the props off the
boat I borrowed the SWP's from,
there 2' less.
I'll have to see if I can pull this
one off, the guy with the 1.36's
is "paid up", and doesn't owe
me any more favors at the moment
jt
I actually did this about
7 years ago on my 24 footer,
I didn't have a GPS back then,
so I don't have any " factual"
results.
acceleration was definetly
better with the 1.5,
2" increase in prop size
was about right, but RPM's
were slightly higher with the
1.5.
I know a guy with 1.36's,
he has Imco external steering,
I have latham, I don't know
if the pins are compatable,
may have to change end caps.
I could borrow the props off the
boat I borrowed the SWP's from,
there 2' less.
I'll have to see if I can pull this
one off, the guy with the 1.36's
is "paid up", and doesn't owe
me any more favors at the moment
jt
05-19-2003, 03:08 PM
#14
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Join Date: Oct 2000
Location: Kentucky - where the women are so fast we have to put a governor on 'em!!
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Looks like you might have to go "in debt"
JT,
What kind of boat is it? What kind of 24' boat were you running 7 years ago when you did the test. Mine is a Baja Force 235 - basically a 24' deep vee - 4500 lbs or so.
What kind of boat is it? What kind of 24' boat were you running 7 years ago when you did the test. Mine is a Baja Force 235 - basically a 24' deep vee - 4500 lbs or so.
05-19-2003, 04:18 PM
#15
VIP Member
VIP Member
Budman,
it was a 91' Baja Bandit,
hull lenght was 22'3"
weight was 3600#'s
Things are kind of blury,
trying to remember back then,
as I recall the 1.36 would
spin a 24" turbo to 5k,
the 1.5 would spin a 26"
turbo 5200 +
Using the prop slip
equation;
1.36 theoretical top speed: 83.55
1.5 theoretical top speed: 85.35
That looks pretty close to
2 mph to me
jt
it was a 91' Baja Bandit,
hull lenght was 22'3"
weight was 3600#'s
Things are kind of blury,
trying to remember back then,
as I recall the 1.36 would
spin a 24" turbo to 5k,
the 1.5 would spin a 26"
turbo 5200 +
Using the prop slip
equation;
1.36 theoretical top speed: 83.55
1.5 theoretical top speed: 85.35
That looks pretty close to
2 mph to me
jt
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