Go Back   Maxum Boat Owners Club - Forum > Maxum General > Maxum Owners General Discussions
Click Here to Login
Register FAQ Community Calendar Today's Posts Log in

Reply
 
Thread Tools Search this Thread Display Modes
 
Old 01-18-2010, 06:10 PM   #1
Lt. JG
 
Join Date: Sep 2009
Location: San Diego, CA
Posts: 19
Default 3-Blade 19P to a 4-Blade 17P

2002 Maxum 1900SR, Mercruizer 5.0l V8...took the boat for a run last weekend, and I recorded 52mph @ 4800 RPM WOT. Isn't this RPM too low? I'm thinking about switching to a 4-Blade 17P for better hole shot and higher RPM?

Any comments would be appreciated.
__________________

RoyR is offline   Reply With Quote
Old 01-18-2010, 06:28 PM   #2
Admiral

 
seapuppy's Avatar
 
Join Date: Nov 2005
Location: Everett Wa
Posts: 4,681
Default

what does your owners manual say??..Usually for a carbed engine...your at the top end of the WOT...however if your running an mpi engine..wot could be a bit higher..as high as 5250 rpm's.....so..check your owners manual..



SP
__________________

__________________
Don't compare your life to others. You have no idea what their journey is all about.
------------------------
SSN683 Association member
Par Excellence
------------------------------
2008 Bayliner 340 - "Wild Whim"
--------------------------------------
I live in my own little world....but it's okay-they know me here!!!

Avid practitioner of the martial art: KLIK-PAO.
Tap-Rack-Bang

Anyone that sez "Size doesn't matter" has never owned a boat!
seapuppy is offline   Reply With Quote
Old 01-19-2010, 01:39 AM   #3
Lt. Commander

 
Brianm's Avatar
 
Join Date: Aug 2009
Location: Ventura County, CA
Posts: 153
Default

Roy,

I realize we have different engines but FWIW my manual says 4400-4800.

With light load, I got about 54mph (gps) at 4700 and I have the factory installed 3 blade 23p.

Hope this helps.
__________________
Brian
So. Cal.
Same admiral since 1973
New Boat 8/13/11: Chaparral 206SSI with 5.0 VP GXI SX
Prior Boat: 2008 Maxum 1900SR3, 4.3L V6 190HP, Alpha 1 (great boat)
2010 Ford 150 XLT Super Crew 5.4L V-8, tow package
2008 Infiniti G-35
Brianm is offline   Reply With Quote
Old 01-19-2010, 05:21 PM   #4
Lt. JG
 
Join Date: Sep 2009
Location: San Diego, CA
Posts: 19
Default

Looks like you guys are right once again...Looked at the service manual for my engine and the RPM is noted as 4400 - 4800 RPM. So I guess just changing to a 4-Blade will give me a better hole-shot, leaving everything else the same?
RoyR is offline   Reply With Quote
Old 01-19-2010, 06:01 PM   #5
Admiral

 
seapuppy's Avatar
 
Join Date: Nov 2005
Location: Everett Wa
Posts: 4,681
Thumbs up

plus a smoother prop..the 4 blade is much more balanced than the 3 blade...however your going to have to up the pitch to probably 19 or 21" pitch on it to get the same as the 3 blade....you may have to experiment on which ones to run...


Glad we could help

SP
__________________
Don't compare your life to others. You have no idea what their journey is all about.
------------------------
SSN683 Association member
Par Excellence
------------------------------
2008 Bayliner 340 - "Wild Whim"
--------------------------------------
I live in my own little world....but it's okay-they know me here!!!

Avid practitioner of the martial art: KLIK-PAO.
Tap-Rack-Bang

Anyone that sez "Size doesn't matter" has never owned a boat!
seapuppy is offline   Reply With Quote
Reply


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 Off
Pingbacks are Off
Refbacks are Off


Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 12:46 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.