iboats - The #1 Store For Everything Boating
 
  #1  
Old November 5th, 2009, 12:52 AM
stubbsboogie's Avatar
stubbsboogie stubbsboogie is offline
Petty Officer 2nd Class
 
Join Date: Aug 2008
Location: Lake City FL
Posts: 169
Default question about 5 blades

Just a question about prop types, I am hoping that Santa is going to bring me a new prop. So I am beginning to think about it and had some questions.

ok so I know that 4 blades give better holeshot while sacrificing some top end versus a three blade.

But my question is would a five blade of a higher pitch alleviate this compromise. Better holeshot and equal top end.

Just wondering since I have no exp. with these types of set up. I have seen several other people with my boat and motor combo that are running these five blade props.
__________________
May you live long and lucky

1991 Sea Nymph
25 Yamaha

2006 Rinker Captiva 192
Mercruiser 4.3 Alpha One Gen II
TU TU TANGO TU
Reply With Quote
  #2  
Old November 5th, 2009, 01:03 AM
walleyehed's Avatar
walleyehed walleyehed is offline
Moderator
 
Join Date: Jun 2003
Location: Joplin, Mo.
Posts: 6,466
Default Re: question about 5 blades

How the boat is set up will determine what bld number will be required and the use of said boat will add more to that equation.
Typically, 5-bld props are much smaller in diameter and 2-3" less pitch than a prop that pulls "X" RPM. The higher the blade number 3,4,5,etc..the lower the speed in most cases where the drive heigth is "fixed" or cannot be changed to run higher or lower-not trim, but physical height of prop-shaft in relation to hull bottom.
Hole-shot tends to increase with blade numbers with lower "stay-on-plane" speeds, but increasing pitch on a 5-bld will kill the performance over-all.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
3 VS 4 blades newbie question rhvi Prop Questions and Topics 7 February 7th, 2009 10:50 AM
Propeller Size BF45, 4 blades to 3 blades...? Jarle Prop Questions and Topics 7 May 11th, 2007 10:27 AM
Propeller Size BF45, 4 blades to 3 blades...? Jarle Honda & Tohatsu/Nissan Outboards 1 June 10th, 2006 05:29 PM
2,3 or 4 blades searay3 Mercury & Mariner Outboards 4 June 13th, 2005 10:04 AM
2 blades vs 3 blades digimortal777 Non-Repair Outboard Discussions 7 September 2nd, 2002 05:51 PM

iboats Forum Directory
Over 100,000 forum posts organized by topic
Outboard Motor Topics
Mercury Outboards
Johnson Outboards
Evinrude Outboards
Force Outboards
Yamaha Outboards
Mariner Outboards
Suzuki Outboards
Honda Outboards
Chrysler Outboards
Tohatsu Outboards
Nissan Outboards
Outboard Motors: non-repair
Vintage Outboards

I/O and Inboard Topics
MerCruiser
OMC I/O, Inboard
Volvo Penta

Propeller Help
Boat Propellers

Boat Repair and Products
Boat Building and Repair
Fiberglass Boat Repair
Marine Electronics
Boat Trailers and Towing
Boat Names
Boat Covers
Boat Parts

Boating Activities Talk
Boating Topics and Questions
Boating Activities and Destinations
Boating Blunders
Boat Shows
Wakeboarding
Water Skiing

Fishing Discussions
Freshwater Fishing
Saltwater Fishing

Boat Type Topics
Aluminum Boats
Bass Boats
Bowrider Boats
Center Console Boats
Cruiser Boats
Cuddy Cabin Boats
Deckboats
Fishing Boats
Fish and Ski Boats
Houseboats
Jet Boats
Jon Boats
Pontoon Boats
Powerboats
PWC Forum
Ski Boats
New Boats
Used Boats

Boat Manufacturers
Boats 250+ Manufacturers
Bayliner Boats
Sea Ray Boats
Zodiac Boats



Outboards

Power Heads

Lower Units

Propellers

Inflatable Boats

Boat Manuals

Engine Parts

All times are GMT -4. The time now is 04:02 AM.