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Old    leonard araujo (laraujo)      Join Date: Apr 2007       07-10-2007, 11:42 AM Reply   
I have the following
03 Launch 22 SS direct drive
800 lbs factory ballast
4 blade prop (13 pitch I think)
320 hp Indmar Marine

With ballast at 20-22mph I am taching appox +3000 rpm

IS THIS NORMAL? What does your setup do? please post!
Old    M-Dizzle (liquidmx)      Join Date: Jun 2005       07-10-2007, 11:47 AM Reply   
00 vlx, monsoon motor, 2200lbs of ballast, 3 male passengers and one rider, full tank of gas, acme 537 prop, approx 24 mph, 3200 rpms.
Old    pwork (siuski)      Join Date: Feb 2003       07-10-2007, 11:47 AM Reply   
06 21V
1800+lbs
14.5x14 4-bld (stock wb prop dims I think)
325 assult

23 mph 3200 rpm

Was also in a 220 not too long ago with 1500-2000lbs and it was running 3500 rpm+ at 23. Don't know the prop
Old    Brian Kaufman (madison_boarder)      Join Date: Apr 2006       07-10-2007, 12:10 PM Reply   
1981 Nautique with 1200 pounds of ballast and 4 passengers + 1 rider at 24 mph = 2800-2900 rpm.

unweighted at 24 = 2400 rpm.

Kind of a different situation I know, but I thought I'd add. though I won't tell you the fuel use, I might make you guys with your nice big V-drives mad ;-) (I want a V-Drive someday too)
Old    Luciano Grimblat (luchog)      Join Date: Jun 2002       07-10-2007, 12:44 PM Reply   
Brian, what prop are you running in you 81?


What's important is not only the RPM's while pulling, but also how much the tach climbs when you hit it. More RPMs mean more horse power developed, so better whole shot.
Old    jeremy hebert (jhebert)      Join Date: May 2007       07-10-2007, 12:55 PM Reply   
98 air nautique, direct drive, 2000lb ballast, 23mph, 2900rpms
Old    leonard araujo (laraujo)      Join Date: Apr 2007       07-10-2007, 1:11 PM Reply   
Nautique guys (Jeremy and Brian) what kind of prop do you have?
Old    HeHateMe (hamkj)      Join Date: Apr 2002       07-10-2007, 1:12 PM Reply   
2004 Sky Supreme V220
6.2L Black Scorpion
10.5 pitch 3 blade ACME.
3000lbs ballast
4-5 people
22-23 mph.
3300 rpms.
Old    Brian Kaufman (madison_boarder)      Join Date: Apr 2006       07-10-2007, 1:31 PM Reply   
You know what, I'm actually not sure what the prop is. I believe that it's actually the stock brass prop. It's a 3 blade and it's intended for skiing (1981=no wakeboarding yet). I think it's more of a speed prop, but hole shot is still fine, even with tandem riders and ballast in place. I will be looking to get a 4 blade at some point to up the rpms in the hole shot a bit and ease the load on the engine.
Old    Luciano Grimblat (luchog)      Join Date: Jun 2002       07-10-2007, 2:41 PM Reply   
Brian, the CNC props recommended for our boats are the ACME 540 and 542 for heavy loads, I'm looking into one of those right now and want some feedback from someone who has tried them both.

Could you send me a pic on your wake when loaded down?
Old    AtTheLake (bmartin)      Join Date: Jan 2007       07-10-2007, 4:33 PM Reply   
04 Centurion Lightning

400lbs ballast + 3 people @ 20MPH = 2700-2800 RPMS

1800lbs ballast + 3 pas @ 22MPH = 3000-3100 RPMs

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