Cruisers Forum

  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
Thread Tools Search this Thread Rate Thread Display Modes
Old 31-03-2014, 11:31   #1
Registered User

Join Date: Mar 2014
Location: Kent Island, MD, USA
Boat: Hunter 376 Sloop; '48 Chris-Craft DLX Runabout
Posts: 11
Send a message via MSN to John Murphy 5
3 Bladed Prop

Please, I am thinking of changing my factory, 2 bladed prop for a 3 blade. RH, Diam.: 18 in., Pitch: ??. It's an Hunter 376, 1997-8, Yanmar 3 JH2E, 45 hp, 3600 rpm max, cruise at 2800 rpm/ at 5 kts; Disp: 16,400 lbs. Is this feaseable & what would the new specs be ??? Much Thanx, Murph
John Murphy 5 is offline   Reply With Quote
Old 01-04-2014, 12:58   #2
Registered User
SkiprJohn's Avatar

Join Date: May 2006
Location: Nicholasville, Kentucky
Boat: 15 foot Canoe
Posts: 14,192
Re: 3 Bladed Prop

Hi John,

Yes, you can do it. What would be the reason you want to change? I believe there to be a bit more drag with a 3 blade while sailing.
There have been quite a few discussions here on the forum about what size needed for particular engines/transmissions/vessels and how to determine the best size for each. Just do a search for "Prop Size" and you'll come up with a bunch of threads. I'd keep the same diameter and then adjust the pitch if needed.
Good luck.
SkiprJohn is offline   Reply With Quote
Old 02-04-2014, 07:53   #3
Marine Service Provider

Join Date: Aug 2008
Location: North Carolina
Posts: 286
Re: 3 Bladed Prop

Hello John,

Going to a three blade prop will definately give you more bite in the water at the expense of some extra drag when sailing. I suggest that you contact a good propeller shop and ask them to work out exactly what prop will work best for you. Done forget to also provide the transmission ratio. They will also be able to supply a prop at a fair price.

If you are on the east coast, contact either General Propeller in Florida or Accutech Propellers in NH. My company and customers have had excellent service from both companies.

Good luck, Stanley
NCboatrx is offline   Reply With Quote
Old 02-04-2014, 08:57   #4
Registered User

Join Date: Aug 2013
Location: big bend florida
Posts: 177
Re: 3 Bladed Prop

Right hand ?
pistarckle is offline   Reply With Quote
Old 02-04-2014, 09:18   #5
Registered User
Cheechako's Avatar

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 23,890
Re: 3 Bladed Prop

it will help a lot in docking/reverse etc... better bite in a chop fwd too. You need a propshop to recommend based on your current prop.
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard

Cheechako is offline   Reply With Quote

3 blade

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
3 Bladed Prop vs 2 Bladed Stone Monohull Sailboats 27 30-07-2013 03:12
For Sale: Bronze 3-bladed Prop Curmudgeon Classifieds Archive 1 28-04-2012 08:05
3 Bladed Folding Flex o Fold for Wauquiez Marilyng Propellers & Drive Systems 8 22-01-2012 17:34
Two-Bladed Gori - Pain in the . . . Sakura Propellers & Drive Systems 5 01-08-2010 12:10
WTB: 3-Bladed Prop iverson-1 Classifieds Archive 0 14-07-2009 12:30

Advertise Here

All times are GMT -7. The time now is 03:32.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.