Stainless 3 Blade or 4 blade prop

K

Kelly Lynn

New member
Joined
Aug 15, 2010
Messages
63
Reaction score
0
C Dory Year
2007
C Dory Model
22 Cruiser
Hull Identification Number
Kelly Lynn
Vessel Name
Kelly Lynn
I have a 75HP Honda 13.5X15 Prop. Has anyone had any experience with the four blade prop. I am interested in buying a new prop but want to investigate and make the best choice.
 
I don't see much advantage to the 4 blade prop in the C Dory 22.
 
after trying 4 new props on my new Yamaha 70, the winner is the solas 4 B SS 13 pitch (I could not find any less pitch for their 4B props) the 4 B solas 13P aluminum is just as good for smoothness and bow-lift (producing less pounding in trailing seas) best and safest thing of all.... they hang onto rough water better!

The 4B also seem to help in the other direction of driving the bow down into the chop! They have lots of rake and cup, able to focus the direction of thrust better perhaps? seems like it to me mon :D

all of my merc 3 bladers are used on sand and gravel bars up river :)
 
My goodness, a rare REDFOX sighting and post! Welcome back..

Charlie
 
:lol: was emailed here today... found 9754 post since last on! :shock: this is the best I con do mon :D I'm sorry I can't watch more often. Cheers folks :)
 
I have had 4 blades on most of my boats a like them. I do think they run smoother and straighter then 3 blade props. My 70 hp johnson on my 19 starcraft always turned when I let go of the wheel. I need a new prop and end up with a 4 blade, it was on sale. It stopped the boat from turning, out out of the hole faster, and cruised on plan at a lower speed. Same thing on the 22. I just like then better.

So if you have one on the boat now dont get rid of it. if you are replacing a 3 blade you will have to go up or down in pitch. cant remember which way.
 
Generally 4 bladed props give more stern lift. If this is desirable, then a valid reason.
 
I'm with Tom - 4 blade on my BF90, is much better than any 3 bade I've tried. Better hole shot, and far smoother.

I do give up 1-2MPH on top end with it, but it's a C-Dory...who cares.
 
Has anyone tried a 4 blade on the smaller motors, like my 40hp twins? Stern lift might be desirable with the heavier weighted twins than a singel, and No this is not a single vs twins question or comment.
 
General rule of thumb, 1" of pitch DOWN [assuming close diameters] for a 4 blade. You can run the engine higher on the transom as well [less drag]. They [4 blades] are good in rough water . As Da Nag pointed out almost always a top speed loss . There is no right or wrong prop. Lots of variables .You just need to pay attention to wide open throttle RPMs so you dont over or under load the motor. Two different 4 blades with same pitch can run totally different due to blade shape.
Marc
 
Don and Brenda":kq948p9q said:
Has anyone tried a 4 blade on the smaller motors, like my 40hp twins? Stern lift might be desirable with the heavier weighted twins than a singel, and No this is not a single vs twins question or comment.
Click to expand...

I have had 4 blades on my 40 Yami's since I got it 5 years ago. Always seemed to be a bit slow, and tail down. Was just into get a sea trial done by a pro and ordered 3 blade aluminum. Hmmm?

One thing more. I do not have Permatrims, and that is going to happen at some point too> Need that stern up more and the trim tabs are not enough, (Too small).

Harvey
SleepyC :moon
 
Not a C-Dory application but when I wanted more out-of-the-hole power for our 1996 Starcraft 4 cyl IO, our local prop shop recommended a four blade. I bought one and it seems better on all accounts, smoothness, pulling a 200 lb skier out of the water (me) top speed etc. By the way I highly recommend them, great service, good prices and pretty good website too. They finished up a prop while I waited one day.
 
Beflyguy":t1epav5b said:
Not a C-Dory application but when I wanted more out-of-the-hole power for our 1996 Starcraft 4 cyl IO, our local prop shop recommended a four blade. I bought one and it seems better on all accounts, smoothness, pulling a 200 lb skier out of the water (me) top speed etc. By the way I highly recommend them, great service, good prices and pretty good website too. They finished up a prop while I waited one day.
Click to expand...

Oops, should have said www.tacomapropeller.com
 
Back
Top