Question on Low Water Pickup vs. Standard?
05-09-2003, 06:24 PM
#1
Registered
Thread Starter
Question on Low Water Pickup vs. Standard?
Guys,
Help me out, what are the pro's and con's of LWP vs. Standard water pickup on an XR lower? I am already aware of the mud sucking problems with LWP. Is there a speed differance? Can a LWP be converted to side water? Is there any problem with increased water pressure if you are running a crossover setup? Add anything you feel is worthwhile. I will be using the lower on a non-stepped hull up to 80mph.
Tim T.
Help me out, what are the pro's and con's of LWP vs. Standard water pickup on an XR lower? I am already aware of the mud sucking problems with LWP. Is there a speed differance? Can a LWP be converted to side water? Is there any problem with increased water pressure if you are running a crossover setup? Add anything you feel is worthwhile. I will be using the lower on a non-stepped hull up to 80mph.
Tim T.
05-09-2003, 07:14 PM
#2
VIP Member
VIP Member
Tim,
Teague in a past PBM reported that,
at if your boat runs over 80 and your
x dimension is conservative, the
low water pick up's cost you 2 mph.
I think I remember Treadwell posting
something on this too, maybe he will
chime in on this one.
Someone had posted the water pressure
issues at one time, but I can't recall who.
Later this week, since I have most of
my side jobs done, I plan on doing
a test.
mine has LWP's, a friend of
mine has SWP's, I'm going to pull his drives,
go out and run mine, verify speed GPS,
go back to shop, put his drives on,
run again.
I will post results later next week ( weather cooperating)
jt
Teague in a past PBM reported that,
at if your boat runs over 80 and your
x dimension is conservative, the
low water pick up's cost you 2 mph.
I think I remember Treadwell posting
something on this too, maybe he will
chime in on this one.
Someone had posted the water pressure
issues at one time, but I can't recall who.
Later this week, since I have most of
my side jobs done, I plan on doing
a test.
mine has LWP's, a friend of
mine has SWP's, I'm going to pull his drives,
go out and run mine, verify speed GPS,
go back to shop, put his drives on,
run again.
I will post results later next week ( weather cooperating)
jt
05-09-2003, 07:51 PM
#3
B-MAX REPAIR
Platinum Member
WHEN I RAN BRAVO 1'S ON MY OL AND BLEW A DRIVE I WOULD PUT A DRIVE OFF OF MY SEA RAY ON THAT HAD A STANDARD WATER PICKUP.WHEN I GOT TO HIGH SPEEDS I LOST WATER PRESSURE BECAUSE THE DRIVE WAS TOO FAR OUT OF THE WATER. SO X DIM. MEANS ALOT TO PICK UP WATER. RB
05-09-2003, 08:31 PM
#4
Registered
Thread Starter
I am currently running side pickups and can trim to quite high without water pressure issues. I did a search and found rumors of speed loss with the LWP. Any verification? Waterfoul had investigated drilling holes in the side and covering the LWP holes. Is this feasible? Would that be a PITA job?
05-17-2003, 09:05 AM
#5
VIP Member
VIP Member
.............And the results are in !
As I mentioned previously, going to
test this theory out, here's what my results were,
The time between runs was 1 1/2 hours,
everything (water conditions, temp, weight)
else was as equal as possible.
...........The side water pickup drives were
1.4 MPH faster ! ( GPS speed's)
Now I need to find a home for these
mud suckers
Quick............ someone else find me a comparison
test to do.
Everybody's boats that I've been working on
are fixed, If I don't find another project soon,
I will be forced to fix stuff around the house
As I mentioned previously, going to
test this theory out, here's what my results were,
The time between runs was 1 1/2 hours,
everything (water conditions, temp, weight)
else was as equal as possible.
...........The side water pickup drives were
1.4 MPH faster ! ( GPS speed's)
Now I need to find a home for these
mud suckers
Quick............ someone else find me a comparison
test to do.
Everybody's boats that I've been working on
are fixed, If I don't find another project soon,
I will be forced to fix stuff around the house
05-17-2003, 03:49 PM
#7
Guest
Posts: n/a
Originally posted by WILDTHING TAZ
WHEN I RAN BRAVO 1'S ON MY OL AND BLEW A DRIVE I WOULD PUT A DRIVE OFF OF MY SEA RAY ON THAT HAD A STANDARD WATER PICKUP.WHEN I GOT TO HIGH SPEEDS I LOST WATER PRESSURE BECAUSE THE DRIVE WAS TOO FAR OUT OF THE WATER. SO X DIM. MEANS ALOT TO PICK UP WATER. RB
WHEN I RAN BRAVO 1'S ON MY OL AND BLEW A DRIVE I WOULD PUT A DRIVE OFF OF MY SEA RAY ON THAT HAD A STANDARD WATER PICKUP.WHEN I GOT TO HIGH SPEEDS I LOST WATER PRESSURE BECAUSE THE DRIVE WAS TOO FAR OUT OF THE WATER. SO X DIM. MEANS ALOT TO PICK UP WATER. RB
05-17-2003, 09:18 PM
#9
Gone Fishin'
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I have not had a chance to do anythying to my drive. Too busy trying to get my motor together and in the boat before Mem. Day.
BUT, if it were me, I'd avoid the LWP drive if given the chance all over again. Been nothing but a sandy, muddy mess for me since I put it on my boat. Unless you are running a car or a high x dimension v-bottom, the LWP is more trouble than it's worth.
BUT, if it were me, I'd avoid the LWP drive if given the chance all over again. Been nothing but a sandy, muddy mess for me since I put it on my boat. Unless you are running a car or a high x dimension v-bottom, the LWP is more trouble than it's worth.
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05-18-2003, 12:26 AM
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There was a post about plugging two of the four holes to improve mph. I think it was one of the F2 racers that posted it.
I lost around 1 1/2 to 2 mph going from a standard bravo with side pick ups to an X drive with dual pick ups. Not sure if the loss was from the pick ups or the upper gears. I changed drives because I was getting air into the system with the side pick ups.
Dan
I lost around 1 1/2 to 2 mph going from a standard bravo with side pick ups to an X drive with dual pick ups. Not sure if the loss was from the pick ups or the upper gears. I changed drives because I was getting air into the system with the side pick ups.
Dan
