3 or 4 blades?

[ted655]

The reason for the 4 blade prop is.....?
What relationship to pitch is there when switching to a 4?Should the diameter change also?
There dosen't seem to be any in stainless.

 

[JUSTINTIME]

Re: 3 or 4 blades?

4 blade is better hole shot
3 blade top speed
aluminum will flex a little giving more top end

 

[Silvertip]

Re: 3 or 4 blades?

If you can't find a four-blade stainless you aren't looking very hard. Try right here on iBoats.

 

[Ron G]

Re: 3 or 4 blades?

It all depeands on what your wanting,theres all kind of 4 blades out there,they all have different purposes just like 3 blads some times a 3 blade is better than a 4 blade and vise-verse for a certain application.what kind of hull and motor do have and whats on it know?

 

[ted655]

Re: 3 or 4 blades?

I want my big (24') Jonboat to PULL at slow speed. 100 hp merc.

 

[Tail_Gunner]

Re: 3 or 4 blades?

The guy's here take this far more serious than you might imagine, If you can or would post you you spec's at wide open throttle, rpm and speed it would be easy to dial a prop in for you.

Now if you simpley want a prop that can lug a lot, sure a 4 blade will work better than a 3 blade. But that is so generic and misleading to a 4blade prop most dont want to give a answer.

I want my big (24') Jonboat to PULL at slow speed. 100 hp merc

If that's all you want get a 16 p 4 blade problem solved, but dont speak of all around preformance, your getting what you asked for

 

[ted655]

Re: 3 or 4 blades?

===="but dont speak of all around preformance, your getting what you asked for "===============
Everythings a tradeoff. I go slow, so top end speed isn't in my quest. I rather have the power.
The motor isn't mounted yet so I can't say what the rps/WOT is.
I can't lay out 2 or 3 bills apeace for an inventory of props. Thaytos why mining the gold on here is SO appreciated. Thanks againoo

 

[walleyehed]

Re: 3 or 4 blades?

What year model is the outboard and do you have any props at all for it now?

 

[ted655]

Re: 3 or 4 blades?

'96 Merc. 3 blade, but nicked bad on 2 blades. Aluminium

 

[Boomyal]

Re: 3 or 4 blades?

'96 Merc. 3 blade, but nicked bad on 2 blades. Aluminium

Pitch and diameter would probably help walleyehed help you!

 

[walleyehed]

Re: 3 or 4 blades?

Atleast I know which series of props will fit your rig now.
A question I would have is what type conditions will you be running in? Sand, mud, stumps, rocks, shallow/deep?
I "think" I might have an answer for ya, but I can't post links, so if you'll email me at ktsander@st-tel.net I'll give you the link.