Like Tree0Likes

New props on Order

Reply
Old 07-08-2005, 04:33 PM
  #1
Charter Member#157
Charter Member
Thread Starter
 
MnFastBoat's Avatar
 
Join Date: Oct 2000
Location: Minneapolis, Mn, Usa
My Boats: 1999 Advantage 28' Cat
Posts: 1,847
Default New props on Order


Just ordered a set of QIv's from Throttle up
Cannot wait to see what transpires
Anyone care to guesstimate?
'99 Advantage 28' twin stock 502's
1.5 gears
bravo 1 drives
bravo 1 28" props that are over 5 years old. they actually look like the blades are flattening out
hitting the rev limits real easy at 5100 nad getting 79.4 empty
and 74-77 depending on load.
I can hit 75 in less then an 1/8 of a mile

Thinking that I should be able to gain at 4-6mph
I would love to hit 85+.
__________________
This Cat is trying to keep up with the Big Dogs
MnFastBoat is offline  
Reply With Quote
Old 07-08-2005, 05:10 PM
  #2
Registered
 
BajaRunner's Avatar
 
Join Date: Nov 2001
Location: Austin
My Boats: I aint got $hit
Posts: 3,622
Default Re: New props on Order

do props really wear out?

Man I would love 4-6 mph more for the price of a set of props. keep us updated.
BajaRunner is offline  
Reply With Quote
Old 07-08-2005, 05:56 PM
  #3
Registered
 
Formula Outlaw's Avatar
 
Join Date: May 2003
Location: In the Mountains
My Boats: was a 89" Formula 311-SR1
Posts: 11,772
Default Re: New props on Order

On my 89' 311 Formula with stock 454 mags, boat came with 23" Mirage. Changed to 24" Quad IV's. Gained seven mph at cruise and 3 mph on the top end. (gps) The Quad IV's are a stern lifting prop and my boat is real azz heavy. Getting the azz up and out of the water reduced drag tremendously which is how I got my speed gains.

Spent over twenty minutes on the phone with Hydromotive and they told me EXACTLY what I could expect and why. They hit it dead center. Couldn't be happier. Had mine for about five years now and they are still mirror finish.
Formula Outlaw is offline  
Reply With Quote
Old 07-08-2005, 06:49 PM
  #4
Registered
 
BajaRunner's Avatar
 
Join Date: Nov 2001
Location: Austin
My Boats: I aint got $hit
Posts: 3,622
Default Re: New props on Order

Quote:
Originally Posted by Formula Outlaw
On my 89' 311 Formula with stock 454 mags, boat came with 23" Mirage. Changed to 24" Quad IV's. Gained seven mph at cruise and 3 mph on the top end. (gps) The Quad IV's are a stern lifting prop and my boat is real azz heavy. Getting the azz up and out of the water reduced drag tremendously which is how I got my speed gains.

Spent over twenty minutes on the phone with Hydromotive and they told me EXACTLY what I could expect and why. They hit it dead center. Couldn't be happier. Had mine for about five years now and they are still mirror finish.
What was your before and after speeds?
BajaRunner is offline  
Reply With Quote
Old 07-08-2005, 11:06 PM
  #5
Registered
 
Formula Outlaw's Avatar
 
Join Date: May 2003
Location: In the Mountains
My Boats: was a 89" Formula 311-SR1
Posts: 11,772
Default Re: New props on Order

Mirage was about 65/66, with the Quad IV's got it up to 68/69. Now with dumping the silent thunder box and installing aluminum EMI Thunder manifolds and risers over the stock Merc lead anchor units (which eliminated over 500 lbs of dead weight right over the props) and installing Stainless Marine tips I'm now seeing, depending on conditions and load, 72/73 and once got it to 74, gps.

Don't know why but for some reason the last picture, taken at night, the color is off a bit, more green than what it really is.
Attached Thumbnails
New props on Order-marvistarun-004-small-.jpg   New props on Order-boatrunnning-009-small-.jpg   New props on Order-boatrunnning-012-small-.jpg  


Last edited by Formula Outlaw; 07-08-2005 at 11:20 PM.
Formula Outlaw is offline  
Reply With Quote
Old 07-09-2005, 12:07 AM
  #6
Charter Member#157
Charter Member
Thread Starter
 
MnFastBoat's Avatar
 
Join Date: Oct 2000
Location: Minneapolis, Mn, Usa
My Boats: 1999 Advantage 28' Cat
Posts: 1,847
Default Re: New props on Order

those are some great increases for the $$ spent
I am hoping hte props do the trick

Maybe next year I can upgrade the exhaust.
You have the same issue I do, Twins
I could have all hte upgrades Iwant if it was a single.
But hten again it would be one big a$$ HP single for my cat
__________________
This Cat is trying to keep up with the Big Dogs
MnFastBoat is offline  
Reply With Quote
Old 07-09-2005, 10:17 AM
  #7
Registered
 
Formula Outlaw's Avatar
 
Join Date: May 2003
Location: In the Mountains
My Boats: was a 89" Formula 311-SR1
Posts: 11,772
Default Re: New props on Order

Agree, twins are more expensive but you've always got a "get home" motor/drive.....saved my azz three times now.
Formula Outlaw is offline  
Reply With Quote
Old 07-24-2005, 10:28 PM
  #8
Charter Member#157
Charter Member
Thread Starter
 
MnFastBoat's Avatar
 
Join Date: Oct 2000
Location: Minneapolis, Mn, Usa
My Boats: 1999 Advantage 28' Cat
Posts: 1,847
Default Re: New props on Order

Finally got out today
Last friday the pass was at 76.8 with the previous bravo 1 28p props.
Blew a water hose so was unable to continue
Was out today with higher air temps and humidity
New props turned out to be GREAT so far.
Midrange cruise of 3,000rpm was 40, up from about 33-36
Top end got me to 83.2 in a short distance. Kept running into large cruiser wakes
The throttle was impressive to say the least. The entire range I could feel the props bitting
Before I would be at max speed bouncing off hte revs at just over half throttle.
Today I was at half throttle and the speeds was still climbing without raising to much more rpm
Handling did not seem to be any less different, but I will say the boat responded well to the Hydros lift and the trimming was positivly responsive
Will do more testing this week if weather permits.
__________________
This Cat is trying to keep up with the Big Dogs
MnFastBoat is offline  
Reply With Quote
Old 07-25-2005, 08:27 AM
  #9
Registered
 
Formula Outlaw's Avatar
 
Join Date: May 2003
Location: In the Mountains
My Boats: was a 89" Formula 311-SR1
Posts: 11,772
Default Re: New props on Order

Gotta love that...
Formula Outlaw is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
seadooq8
Outerlimits
1
07-26-2008 10:05 PM
Buddy OO
General Boating Discussion
1
03-27-2006 03:18 PM
90 2 nothin
Fountain
2
02-25-2006 12:23 AM
Attack
Fountain
27
01-02-2006 07:55 PM
LPA2106
General Boating Discussion
9
03-11-2004 09:56 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 04:28 PM.


Copyright 2011 OffShoreOnly. All rights reserved.