Like Tree0Likes

01 Fountain 32w/540's HOW FAST?

Reply
Old 02-06-2002, 07:01 PM
  #11
Member #9
Charter Member
 
hp500efi's Avatar
 
Join Date: Oct 2000
Location: Pewaukee, WI
Posts: 4,269
Post

Quote:
Originally posted by waterspeed:
<STRONG>Roger...

Send it to Reggie...he'll claim that he saw the GPS hit 120!!!!

LOL!!!! </STRONG>
LMAO
__________________
Member of the Liquid Jungle
hp500efi is offline  
Reply With Quote
Old 02-06-2002, 10:21 PM
  #12
Registered
 
car54driver's Avatar
 
Join Date: Mar 2001
Location: Russell Springs KY
Posts: 47
Post

92 under best conditions.
car54driver is offline  
Reply With Quote
Old 02-06-2002, 10:29 PM
  #13
Guest
 
Posts: n/a
Post

I'm going to guess 94.

a friends 35 with procharged 502 will do 97
 
Reply With Quote
Old 08-22-2002, 12:05 PM
  #14
Registered
Thread Starter
 
Join Date: Jun 2001
Location: Graham,NC
My Boats: 2007 Lightning w/700s, 29 w/575s
Posts: 628
Default

Just finished the boat but it now has Troy Dennis 572's with 680 HP and I am a little dissappointed with the results. Just ran it at Fountain with 30 Mercury's and it ran 93 at 5000. We installed 2" imco shorties with 1.34 gears and the boat just does not seem to gain speed after 88 MPH. It will run this at half throttle. We tried 4 blade 29 Hydros and got 5100 and it ran 95, but getting on plane was bad. Also had the bottom checked and it needed blueprinting and it has been done. ANY IDEAS???? I was looking for 102-105 range.
Roger is offline  
Reply With Quote
Old 08-22-2002, 09:36 PM
  #15
Charter Member
Charter Member
 
32fever's Avatar
 
Join Date: Feb 2001
Location: Granger, IN
My Boats: 37 Outerlimits & Sweetwater 2486 Tritoon 140HP
Posts: 1,039
Default

Quote:
Originally posted by Roger
Just finished the boat but it now has Troy Dennis 572's with 680 HP and I am a little dissappointed with the results. Just ran it at Fountain with 30 Mercury's and it ran 93 at 5000. We installed 2" imco shorties with 1.34 gears and the boat just does not seem to gain speed after 88 MPH. It will run this at half throttle. We tried 4 blade 29 Hydros and got 5100 and it ran 95, but getting on plane was bad. Also had the bottom checked and it needed blueprinting and it has been done. ANY IDEAS???? I was looking for 102-105 range.
Have you talked to Hydro? Maybe try their 5 blade? Not sure what range of sizes is avail. I know on the 37 AT AVH's I was reading they tried the Herring 5 blades and had better results. Not the same boat, but maybe the manufacturer of the props can offer assistance.
32fever is offline  
Reply With Quote
Old 08-22-2002, 09:44 PM
  #16
Platinum Member
Platinum Member
Trade Score: (1)
 
KAAMA's Avatar
 
Join Date: Oct 2000
Location: Western Michigan
My Boats: A boat?....What boat??? How about a galvarnized warsh tub wit a toranady strapped own da rear!
Posts: 4,329
Default

I'm sure it will FLY!
KAAMA is offline  
Reply With Quote
Old 08-23-2002, 12:05 AM
  #17
sauron
Guest
 
Posts: n/a
Default

Yes talked to Hydromotive and they think that the boat is lifting the tail to much pushing the nose over. I believe them because the boat is very tight, does not chime walk or porpoise. I have ordered a set of 27s and are going to try them. See if RPMS go up and the nose lifts some. Will advise. Roger,
 
Reply With Quote
Old 08-23-2002, 10:16 AM
  #18
Charter Member #1093
Charter Member
 
SteveDavid's Avatar
 
Join Date: Feb 2001
Location: Lighthouse Point & Ocean Reef FL
My Boats: 2003 60' SeaRay, 2014 30' Concept CC
Posts: 660
Default 01 Fountain 32W/540's HOW FAST

Hi Roger,

A couple of diagnostic questions:

#1. At speed, what was your water pressure?
#2. Did positive trim make any difference at WOT?
#3. What were your RPMS at 85 MPH?
#4. Was anyone looking at your slip stream? If so, was there a solid directional flow of prop blast, rooster tails, cavitated water, etc?
#5. At what point on the side of the hull were you seeing water spray from?

I aks these because it's easy to prescribe a solution before knowing the prblem, and that just might have you chasing non existent gremlins.

My assumption, (and that's a loaded word) is that you're losing water pressure as you're experiencing prop blow out. When this happens it';s like a clutch slipping, you just don't gain much with higher RPMs, thus the RPM at 85 MPH question. If positive trim does not lift the hull and you're seeing spray ahead of the CG, this would also indicate a lack of leverage on the hull thru the drives.

If that's the problem, and I say IF, then a larger diameter prop, and more blades, such as the P-5 might help. Are you currently running a 15.25 or 15.50 diameter? If so, trying a 15.75 diameter 5 blade, be it a P-5 or Hering, may help. Are you using a diffuser ring on the props you ran your current speed with? If not, you might add them to reduce blow out.

You mentioned you are running the 2" shorties, so I'm guessing your X dimension is pretty high? Are you running a staggered set up? If you are, which way are you rotating the props? There is also the chance that a close stagger may be causing cavitation between the props as they cycle past each other?

Seems I'm asking alot mroe quesitons than giving you answers, sorry Roger, it's a process of elimination. I'm out of town until Sunday evening, let me know what happens over the weekend. Hey, 90 plus is fast, hope you're wearing a life jacket and a kill switch lanyard

See ya Roger,

Steve
SteveDavid is offline  
Reply With Quote
Old 08-23-2002, 12:45 PM
  #19
Registered
Thread Starter
 
Join Date: Jun 2001
Location: Graham,NC
My Boats: 2007 Lightning w/700s, 29 w/575s
Posts: 628
Default

Too Old, I have considered that also. I may not be able to test this weekend due to no water in the lakes around here, but when I do I will post the results. Just recieved the 27s from Hydromotive and hope to test if water permits.
Roger is offline  
Reply With Quote
Old 08-23-2002, 12:49 PM
  #20
Registered
Thread Starter
 
Join Date: Jun 2001
Location: Graham,NC
My Boats: 2007 Lightning w/700s, 29 w/575s
Posts: 628
Default

Steve, thanks for the help. I will let you know the answers after I test the new props from Hydromotive. Give me your phone number if possible. I would rather talk on my dime than type. Roger
Roger is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
joejohn
Fountain
25
04-06-2008 09:33 AM
tomtbone1993
Prop Talk
13
10-20-2006 08:39 AM
Fanatic
Fountain
28
11-17-2005 11:37 PM
sleeper_dave
General Q & A
37
09-25-2005 10:02 PM
diveboy
General Boating Discussion
13
08-28-2002 06:50 PM



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 11:50 PM.


Copyright 2011 OffShoreOnly. All rights reserved.